Actually, I have deployed my application in net4india web host and done each configuration. My website using mysql database its working fine with simple jsp(J2ee) code but when i switching into Hibernate+Mysql+spring then it giving exception. I have googled many times but didn't got proper solution please Help.
this is my spring-servlet.xml file Datasource:
<bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource" destroy-method="close">
<property name="driverClass" value="com.mysql.jdbc.Driver" />
<property name="jdbcUrl" value="jdbc:mysql://localhost/database" />
<property name="user" value="root" />
<property name="password" value="" />
<!-- these are C3P0 properties -->
<property name="minPoolSize" value="2" />
<property name="maxPoolSize" value="5"/>
<property name="maxIdleTime" value="500"/>
<property name="maxConnectionAge" value="1000"/>
<property name="acquireRetryAttempts" value="5"/>
<property name="maxIdleTimeExcessConnections" value="300"/>
<property name="idleConnectionTestPeriod" value="540"/>
<property name="preferredTestQuery" value="SELECT 1"/>
<property name="testConnectionOnCheckout" value="false"/>
<property name="testConnectionOnCheckin" value="false"/>
<property name="checkoutTimeout" value="60000"/>
</bean>
Exception i am getting:
org.springframework.web.util.NestedServletException: Request processing failed; nested exception is org.springframework.transaction.CannotCreateTransactionException: Could not open Hibernate Session for transaction; nested exception is org.hibernate.exception.GenericJDBCException: Cannot open connection
org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:894)
org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:778)
javax.servlet.http.HttpServlet.service(HttpServlet.java:618)
javax.servlet.http.HttpServlet.service(HttpServlet.java:725)
org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
root cause
org.springframework.transaction.CannotCreateTransactionException: Could not open Hibernate Session for transaction; nested exception is org.hibernate.exception.GenericJDBCException: Cannot open connection
org.springframework.orm.hibernate3.HibernateTransactionManager.doBegin(HibernateTransactionManager.java:596)
org.springframework.transaction.support.AbstractPlatformTransactionManager.getTransaction(AbstractPlatformTransactionManager.java:371)
org.springframework.transaction.interceptor.TransactionAspectSupport.createTransactionIfNecessary(TransactionAspectSupport.java:335)
org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:105)
org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172)
org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:202)
$Proxy2053.getAllMenus(Unknown Source)
com.ecommerce.onlineshopping.User.controller.controllerHelper.UserControllerHelper.createNewSession(UserControllerHelper.java:56)
com.ecommerce.onlineshopping.User.controller.UserController.index(UserController.java:185)
sun.reflect.GeneratedMethodAccessor4088.invoke(Unknown Source)
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
java.lang.reflect.Method.invoke(Method.java:601)
org.springframework.web.method.support.InvocableHandlerMethod.invoke(InvocableHandlerMethod.java:213)
org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:126)
org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:96)
org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:617)
org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:578)
org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:80)
org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:923)
org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:852)
org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:882)
org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:778)
javax.servlet.http.HttpServlet.service(HttpServlet.java:618)
javax.servlet.http.HttpServlet.service(HttpServlet.java:725)
org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
root cause
org.hibernate.exception.GenericJDBCException: Cannot open connection
org.hibernate.exception.SQLStateConverter.handledNonSpecificException(SQLStateConverter.java:140)
org.hibernate.exception.SQLStateConverter.convert(SQLStateConverter.java:128)
org.hibernate.exception.JDBCExceptionHelper.convert(JDBCExceptionHelper.java:66)
org.hibernate.exception.JDBCExceptionHelper.convert(JDBCExceptionHelper.java:52)
org.hibernate.jdbc.ConnectionManager.openConnection(ConnectionManager.java:449)
org.hibernate.jdbc.ConnectionManager.getConnection(ConnectionManager.java:167)
org.hibernate.jdbc.JDBCContext.connection(JDBCContext.java:160)
org.hibernate.transaction.JDBCTransaction.begin(JDBCTransaction.java:81)
org.hibernate.impl.SessionImpl.beginTransaction(SessionImpl.java:1473)
org.springframework.orm.hibernate3.HibernateTransactionManager.doBegin(HibernateTransactionManager.java:555)
org.springframework.transaction.support.AbstractPlatformTransactionManager.getTransaction(AbstractPlatformTransactionManager.java:371)
org.springframework.transaction.interceptor.TransactionAspectSupport.createTransactionIfNecessary(TransactionAspectSupport.java:335)
org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:105)
org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172)
org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:202)
$Proxy2053.getAllMenus(Unknown Source)
com.ecommerce.onlineshopping.User.controller.controllerHelper.UserControllerHelper.createNewSession(UserControllerHelper.java:56)
com.ecommerce.onlineshopping.User.controller.UserController.index(UserController.java:185)
sun.reflect.GeneratedMethodAccessor4088.invoke(Unknown Source)
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
java.lang.reflect.Method.invoke(Method.java:601)
org.springframework.web.method.support.InvocableHandlerMethod.invoke(InvocableHandlerMethod.java:213)
org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:126)
org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:96)
org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:617)
org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:578)
org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:80)
org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:923)
org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:852)
org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:882)
org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:778)
javax.servlet.http.HttpServlet.service(HttpServlet.java:618)
javax.servlet.http.HttpServlet.service(HttpServlet.java:725)
org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
root cause
java.sql.SQLException: Connections could not be acquired from the underlying database!
com.mchange.v2.sql.SqlUtils.toSQLException(SqlUtils.java:106)
com.mchange.v2.c3p0.impl.C3P0PooledConnectionPool.checkoutPooledConnection(C3P0PooledConnectionPool.java:529)
com.mchange.v2.c3p0.impl.AbstractPoolBackedDataSource.getConnection(AbstractPoolBackedDataSource.java:128)
org.springframework.orm.hibernate3.LocalDataSourceConnectionProvider.getConnection(LocalDataSourceConnectionProvider.java:81)
org.hibernate.jdbc.ConnectionManager.openConnection(ConnectionManager.java:446)
org.hibernate.jdbc.ConnectionManager.getConnection(ConnectionManager.java:167)
org.hibernate.jdbc.JDBCContext.connection(JDBCContext.java:160)
org.hibernate.transaction.JDBCTransaction.begin(JDBCTransaction.java:81)
org.hibernate.impl.SessionImpl.beginTransaction(SessionImpl.java:1473)
org.springframework.orm.hibernate3.HibernateTransactionManager.doBegin(HibernateTransactionManager.java:555)
org.springframework.transaction.support.AbstractPlatformTransactionManager.getTransaction(AbstractPlatformTransactionManager.java:371)
org.springframework.transaction.interceptor.TransactionAspectSupport.createTransactionIfNecessary(TransactionAspectSupport.java:335)
org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:105)
org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172)
org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:202)
$Proxy2053.getAllMenus(Unknown Source)
com.ecommerce.onlineshopping.User.controller.controllerHelper.UserControllerHelper.createNewSession(UserControllerHelper.java:56)
com.ecommerce.onlineshopping.User.controller.UserController.index(UserController.java:185)
sun.reflect.GeneratedMethodAccessor4088.invoke(Unknown Source)
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
java.lang.reflect.Method.invoke(Method.java:601)
org.springframework.web.method.support.InvocableHandlerMethod.invoke(InvocableHandlerMethod.java:213)
org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:126)
org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:96)
org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:617)
org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:578)
org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:80)
org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:923)
org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:852)
org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:882)
org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:778)
javax.servlet.http.HttpServlet.service(HttpServlet.java:618)
javax.servlet.http.HttpServlet.service(HttpServlet.java:725)
org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
root cause
com.mchange.v2.resourcepool.CannotAcquireResourceException: A ResourcePool could not acquire a resource from its primary factory or source.
com.mchange.v2.resourcepool.BasicResourcePool.awaitAvailable(BasicResourcePool.java:1319)
com.mchange.v2.resourcepool.BasicResourcePool.prelimCheckoutResource(BasicResourcePool.java:557)
com.mchange.v2.resourcepool.BasicResourcePool.checkoutResource(BasicResourcePool.java:477)
com.mchange.v2.c3p0.impl.C3P0PooledConnectionPool.checkoutPooledConnection(C3P0PooledConnectionPool.java:525)
com.mchange.v2.c3p0.impl.AbstractPoolBackedDataSource.getConnection(AbstractPoolBackedDataSource.java:128)
org.springframework.orm.hibernate3.LocalDataSourceConnectionProvider.getConnection(LocalDataSourceConnectionProvider.java:81)
org.hibernate.jdbc.ConnectionManager.openConnection(ConnectionManager.java:446)
org.hibernate.jdbc.ConnectionManager.getConnection(ConnectionManager.java:167)
org.hibernate.jdbc.JDBCContext.connection(JDBCContext.java:160)
org.hibernate.transaction.JDBCTransaction.begin(JDBCTransaction.java:81)
org.hibernate.impl.SessionImpl.beginTransaction(SessionImpl.java:1473)
org.springframework.orm.hibernate3.HibernateTransactionManager.doBegin(HibernateTransactionManager.java:555)
org.springframework.transaction.support.AbstractPlatformTransactionManager.getTransaction(AbstractPlatformTransactionManager.java:371)
org.springframework.transaction.interceptor.TransactionAspectSupport.createTransactionIfNecessary(TransactionAspectSupport.java:335)
org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:105)
org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172)
org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:202)
$Proxy2053.getAllMenus(Unknown Source)
com.ecommerce.onlineshopping.User.controller.controllerHelper.UserControllerHelper.createNewSession(UserControllerHelper.java:56)
com.ecommerce.onlineshopping.User.controller.UserController.index(UserController.java:185)
sun.reflect.GeneratedMethodAccessor4088.invoke(Unknown Source)
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
java.lang.reflect.Method.invoke(Method.java:601)
org.springframework.web.method.support.InvocableHandlerMethod.invoke(InvocableHandlerMethod.java:213)
org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:126)
Related
Trying to add Zipkin mysql tracing instrumentation by including the following library in a Spring Boot Application
compile group: 'io.zipkin.brave', name: 'brave-instrumentation-mysql', version: '5.6.3'
And appending the following to my jdbc connection string:
?statementInterceptors=brave.mysql.TracingStatementInterceptor
Existing DB connection is using a c3po connection pool configured as follows:
<bean id="dataSourceBean" class="com.mchange.v2.c3p0.ComboPooledDataSource" destroy-method="close" primary="true">
<property name="driverClass" value="${db.driver}" />
<property name="jdbcUrl" value="${db.url}" />
<property name="user" value="${db.username}" />
<property name="password" value="${db.password}" />
<property name="initialPoolSize" value="${db.initial.pool.size}" />
<property name="minPoolSize" value="${db.min.pool.size}" />
<property name="maxPoolSize" value="${db.max.pool.size}" />
<property name="idleConnectionTestPeriod" value="30" />
<property name="maxIdleTimeExcessConnections" value="120" />
</bean>
but running into issue starting service when attempting to acquire connections from the pool:
2019-05-09 22:54:40.752 WARN [api,,,] 31975 --- [-AdminTaskTimer] c.m.v.a.ThreadPoolAsynchronousRunner : com.mchange.v2.async.ThreadPoolAsynchronousRunner$DeadlockDetector#222a008d -- APPARENT DEADLOCK!!! Complete Status:
Managed Threads: 3
Active Threads: 3
Active Tasks:
com.mchange.v2.resourcepool.BasicResourcePool$ScatteredAcquireTask#5cf72aaf
on thread: C3P0PooledConnectionPoolManager[identityToken->z8kflta218cyxuc1srbxxo|30f51f8a]-HelperThread-#0
com.mchange.v2.resourcepool.BasicResourcePool$ScatteredAcquireTask#67c13f4f
on thread: C3P0PooledConnectionPoolManager[identityToken->z8kflta218cyxuc1srbxxo|30f51f8a]-HelperThread-#1
com.mchange.v2.resourcepool.BasicResourcePool$ScatteredAcquireTask#dff1fcc
on thread: C3P0PooledConnectionPoolManager[identityToken->z8kflta218cyxuc1srbxxo|30f51f8a]-HelperThread-#2
Pending Tasks:
com.mchange.v2.resourcepool.BasicResourcePool$ScatteredAcquireTask#775717e4
com.mchange.v2.resourcepool.BasicResourcePool$ScatteredAcquireTask#1290e9f3
com.mchange.v2.resourcepool.BasicResourcePool$ScatteredAcquireTask#7cc597a9
com.mchange.v2.resourcepool.BasicResourcePool$ScatteredAcquireTask#9b1e682
com.mchange.v2.resourcepool.BasicResourcePool$ScatteredAcquireTask#46963867
com.mchange.v2.resourcepool.BasicResourcePool$ScatteredAcquireTask#53dc8e37
com.mchange.v2.resourcepool.BasicResourcePool$ScatteredAcquireTask#3f4233a
Pool thread stack traces:
Thread[C3P0PooledConnectionPoolManager[identityToken->z8kflta218cyxuc1srbxxo|30f51f8a]-HelperThread-#0,5,main]
org.springframework.cloud.context.scope.GenericScope$BeanLifecycleWrapper.getBean(GenericScope.java:388)
org.springframework.cloud.context.scope.GenericScope.get(GenericScope.java:186)
org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:353)
org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:199)
org.springframework.aop.target.SimpleBeanTargetSource.getTarget(SimpleBeanTargetSource.java:35)
org.springframework.aop.framework.CglibAopProxy$DynamicAdvisedInterceptor.intercept(CglibAopProxy.java:672)
brave.sampler.Sampler$$EnhancerBySpringCGLIB$$d8298fbe.isSampled(<generated>)
brave.Tracer.nextContext(Tracer.java:252)
brave.Tracer.newRootContext(Tracer.java:212)
brave.Tracer.newTrace(Tracer.java:142)
brave.Tracer.nextSpan(Tracer.java:436)
brave.propagation.ThreadLocalSpan.next(ThreadLocalSpan.java:119)
brave.mysql.TracingStatementInterceptor.preProcess(TracingStatementInterceptor.java:33)
com.mysql.jdbc.NoSubInterceptorWrapper.preProcess(NoSubInterceptorWrapper.java:71)
com.mysql.jdbc.MysqlIO.invokeStatementInterceptorsPre(MysqlIO.java:3007)
com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:2671)
com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2828)
com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2777)
com.mysql.jdbc.StatementImpl.executeQuery(StatementImpl.java:1651)
com.mysql.jdbc.ConnectionImpl.loadServerVariables(ConnectionImpl.java:4215)
com.mysql.jdbc.ConnectionImpl.initializePropsFromServer(ConnectionImpl.java:3609)
com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2550)
com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2320)
com.mysql.jdbc.ConnectionImpl.<init>(ConnectionImpl.java:834)
com.mysql.jdbc.JDBC4Connection.<init>(JDBC4Connection.java:46)
sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
java.lang.reflect.Constructor.newInstance(Constructor.java:423)
com.mysql.jdbc.Util.handleNewInstance(Util.java:411)
com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416)
com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:347)
com.mchange.v2.c3p0.DriverManagerDataSource.getConnection(DriverManagerDataSource.java:175)
com.mchange.v2.c3p0.WrapperConnectionPoolDataSource.getPooledConnection(WrapperConnectionPoolDataSource.java:220)
com.mchange.v2.c3p0.WrapperConnectionPoolDataSource.getPooledConnection(WrapperConnectionPoolDataSource.java:206)
com.mchange.v2.c3p0.impl.C3P0PooledConnectionPool$1PooledConnectionResourcePoolManager.acquireResource(C3P0PooledConnectionPool.java:203)
com.mchange.v2.resourcepool.BasicResourcePool.doAcquire(BasicResourcePool.java:1138)
com.mchange.v2.resourcepool.BasicResourcePool.doAcquireAndDecrementPendingAcquiresWithinLockOnSuccess(BasicResourcePool.java:1125)
com.mchange.v2.resourcepool.BasicResourcePool.access$700(BasicResourcePool.java:44)
com.mchange.v2.resourcepool.BasicResourcePool$ScatteredAcquireTask.run(BasicResourcePool.java:1870)
com.mchange.v2.async.ThreadPoolAsynchronousRunner$PoolThread.run(ThreadPoolAsynchronousRunner.java:696)
Thread[C3P0PooledConnectionPoolManager[identityToken->z8kflta218cyxuc1srbxxo|30f51f8a]-HelperThread-#1,5,main]
org.springframework.cloud.context.scope.GenericScope$BeanLifecycleWrapper.getBean(GenericScope.java:388)
org.springframework.cloud.context.scope.GenericScope.get(GenericScope.java:186)
org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:353)
org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:199)
org.springframework.aop.target.SimpleBeanTargetSource.getTarget(SimpleBeanTargetSource.java:35)
org.springframework.aop.framework.CglibAopProxy$DynamicAdvisedInterceptor.intercept(CglibAopProxy.java:672)
brave.sampler.Sampler$$EnhancerBySpringCGLIB$$d8298fbe.isSampled(<generated>)
brave.Tracer.nextContext(Tracer.java:252)
brave.Tracer.newRootContext(Tracer.java:212)
brave.Tracer.newTrace(Tracer.java:142)
brave.Tracer.nextSpan(Tracer.java:436)
brave.propagation.ThreadLocalSpan.next(ThreadLocalSpan.java:119)
brave.mysql.TracingStatementInterceptor.preProcess(TracingStatementInterceptor.java:33)
com.mysql.jdbc.NoSubInterceptorWrapper.preProcess(NoSubInterceptorWrapper.java:71)
com.mysql.jdbc.MysqlIO.invokeStatementInterceptorsPre(MysqlIO.java:3007)
com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:2671)
com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2828)
com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2777)
com.mysql.jdbc.StatementImpl.executeQuery(StatementImpl.java:1651)
com.mysql.jdbc.ConnectionImpl.loadServerVariables(ConnectionImpl.java:4215)
com.mysql.jdbc.ConnectionImpl.initializePropsFromServer(ConnectionImpl.java:3609)
com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2550)
com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2320)
com.mysql.jdbc.ConnectionImpl.<init>(ConnectionImpl.java:834)
com.mysql.jdbc.JDBC4Connection.<init>(JDBC4Connection.java:46)
sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
java.lang.reflect.Constructor.newInstance(Constructor.java:423)
com.mysql.jdbc.Util.handleNewInstance(Util.java:411)
com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416)
com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:347)
com.mchange.v2.c3p0.DriverManagerDataSource.getConnection(DriverManagerDataSource.java:175)
com.mchange.v2.c3p0.WrapperConnectionPoolDataSource.getPooledConnection(WrapperConnectionPoolDataSource.java:220)
com.mchange.v2.c3p0.WrapperConnectionPoolDataSource.getPooledConnection(WrapperConnectionPoolDataSource.java:206)
com.mchange.v2.c3p0.impl.C3P0PooledConnectionPool$1PooledConnectionResourcePoolManager.acquireResource(C3P0PooledConnectionPool.java:203)
com.mchange.v2.resourcepool.BasicResourcePool.doAcquire(BasicResourcePool.java:1138)
com.mchange.v2.resourcepool.BasicResourcePool.doAcquireAndDecrementPendingAcquiresWithinLockOnSuccess(BasicResourcePool.java:1125)
com.mchange.v2.resourcepool.BasicResourcePool.access$700(BasicResourcePool.java:44)
com.mchange.v2.resourcepool.BasicResourcePool$ScatteredAcquireTask.run(BasicResourcePool.java:1870)
com.mchange.v2.async.ThreadPoolAsynchronousRunner$PoolThread.run(ThreadPoolAsynchronousRunner.java:696)
Thread[C3P0PooledConnectionPoolManager[identityToken->z8kflta218cyxuc1srbxxo|30f51f8a]-HelperThread-#2,5,main]
org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:204)
org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:318)
org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:199)
org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod(ConstructorResolver.java:392)
org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateUsingFactoryMethod(AbstractAutowireCapableBeanFactory.java:1305)
org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1144)
org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:555)
org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:515)
org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$1(AbstractBeanFactory.java:356)
org.springframework.beans.factory.support.AbstractBeanFactory$$Lambda$570/35986993.getObject(Unknown Source)
org.springframework.cloud.context.scope.GenericScope$BeanLifecycleWrapper.getBean(GenericScope.java:389)
org.springframework.cloud.context.scope.GenericScope.get(GenericScope.java:186)
org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:353)
org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:199)
org.springframework.aop.target.SimpleBeanTargetSource.getTarget(SimpleBeanTargetSource.java:35)
org.springframework.aop.framework.CglibAopProxy$DynamicAdvisedInterceptor.intercept(CglibAopProxy.java:672)
brave.sampler.Sampler$$EnhancerBySpringCGLIB$$d8298fbe.isSampled(<generated>)
brave.Tracer.nextContext(Tracer.java:252)
brave.Tracer.newRootContext(Tracer.java:212)
brave.Tracer.newTrace(Tracer.java:142)
brave.Tracer.nextSpan(Tracer.java:436)
brave.propagation.ThreadLocalSpan.next(ThreadLocalSpan.java:119)
brave.mysql.TracingStatementInterceptor.preProcess(TracingStatementInterceptor.java:33)
com.mysql.jdbc.NoSubInterceptorWrapper.preProcess(NoSubInterceptorWrapper.java:71)
com.mysql.jdbc.MysqlIO.invokeStatementInterceptorsPre(MysqlIO.java:3007)
com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:2671)
com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2828)
com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2777)
com.mysql.jdbc.StatementImpl.executeQuery(StatementImpl.java:1651)
com.mysql.jdbc.ConnectionImpl.loadServerVariables(ConnectionImpl.java:4215)
com.mysql.jdbc.ConnectionImpl.initializePropsFromServer(ConnectionImpl.java:3609)
com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2550)
com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2320)
com.mysql.jdbc.ConnectionImpl.<init>(ConnectionImpl.java:834)
com.mysql.jdbc.JDBC4Connection.<init>(JDBC4Connection.java:46)
sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
java.lang.reflect.Constructor.newInstance(Constructor.java:423)
com.mysql.jdbc.Util.handleNewInstance(Util.java:411)
com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:416)
com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:347)
com.mchange.v2.c3p0.DriverManagerDataSource.getConnection(DriverManagerDataSource.java:175)
com.mchange.v2.c3p0.WrapperConnectionPoolDataSource.getPooledConnection(WrapperConnectionPoolDataSource.java:220)
com.mchange.v2.c3p0.WrapperConnectionPoolDataSource.getPooledConnection(WrapperConnectionPoolDataSource.java:206)
com.mchange.v2.c3p0.impl.C3P0PooledConnectionPool$1PooledConnectionResourcePoolManager.acquireResource(C3P0PooledConnectionPool.java:203)
com.mchange.v2.resourcepool.BasicResourcePool.doAcquire(BasicResourcePool.java:1138)
com.mchange.v2.resourcepool.BasicResourcePool.doAcquireAndDecrementPendingAcquiresWithinLockOnSuccess(BasicResourcePool.java:1125)
com.mchange.v2.resourcepool.BasicResourcePool.access$700(BasicResourcePool.java:44)
com.mchange.v2.resourcepool.BasicResourcePool$ScatteredAcquireTask.run(BasicResourcePool.java:1870)
com.mchange.v2.async.ThreadPoolAsynchronousRunner$PoolThread.run(ThreadPoolAsynchronousRunner.java:696)
It looks like the trace is triggering an old-fashioned inverted-lock-order deadlock freezing threads that are attempting to acquire new Connections.
The last of the three deadlocked threads is trying to get a lock on some singleton or bean. It has already passed through and presumably acquired a lock on a GenericScope.
The other two threads are trying to acquire a lock on a GenericScope, which presumably the first thread has.
An unexpected reentrance from the zipkin code into spring is generating a deadlock. c3p0 has a fixed-size thread pool that notices when all its threads (just 3 here, c3p0's default) are persistently frozen, then (pretty correctly in this case) declares a deadlock and replaces the blocked threads in hopes of recovering.
Does c3p0 recover? Is this a rare or frequent deadlock? There's not much you can easily do to prevent this deadlock, I think either you'll have to tolerate it or do without the instrumentation.
I get a javax.persistence.PersistenceException when I try to execute a query. I have a MySQL db and I am using Struts, Spring and Hibernate frameworks. Here is the exception stack.
javax.persistence.PersistenceException: org.hibernate.exception.JDBCConnectionException: Could not open connection
org.hibernate.ejb.AbstractEntityManagerImpl.convert(AbstractEntityManagerImpl.java:1387)
org.hibernate.ejb.AbstractEntityManagerImpl.convert(AbstractEntityManagerImpl.java:1310)
org.hibernate.ejb.QueryImpl.getResultList(QueryImpl.java:275)
sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
java.lang.reflect.Method.invoke(Unknown Source)
org.springframework.orm.jpa.SharedEntityManagerCreator$DeferredQueryInvocationHandler.invoke(SharedEntityManagerCreator.java:311)
com.sun.proxy.$Proxy19.getResultList(Unknown Source)
com.sc.dao.LoginDao.AuthenticationCheck(LoginDao.java:32)
com.sc.service.LoginService.isValidUser(LoginService.java:20)
com.sc.web.LoginAction.execute(LoginAction.java:24)
sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
java.lang.reflect.Method.invoke(Unknown Source)
com.opensymphony.xwork2.DefaultActionInvocation.invokeAction(DefaultActionInvocation.java:450)
com.opensymphony.xwork2.DefaultActionInvocation.invokeActionOnly(DefaultActionInvocation.java:289)
com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:252)
org.apache.struts2.interceptor.DeprecationInterceptor.intercept(DeprecationInterceptor.java:41)
com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:246)
org.apache.struts2.interceptor.debugging.DebuggingInterceptor.intercept(DebuggingInterceptor.java:256)
com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:246)
com.opensymphony.xwork2.interceptor.DefaultWorkflowInterceptor.doIntercept(DefaultWorkflowInterceptor.java:167)
com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:98)
com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:246)
com.opensymphony.xwork2.validator.ValidationInterceptor.doIntercept(ValidationInterceptor.java:265)
org.apache.struts2.interceptor.validation.AnnotationValidationInterceptor.doIntercept(AnnotationValidationInterceptor.java:68)
com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:98)
com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:246)
com.opensymphony.xwork2.interceptor.ConversionErrorInterceptor.intercept(ConversionErrorInterceptor.java:138)
com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:246)
com.opensymphony.xwork2.interceptor.ParametersInterceptor.doIntercept(ParametersInterceptor.java:249)
com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:98)
com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:246)
com.opensymphony.xwork2.interceptor.ParametersInterceptor.doIntercept(ParametersInterceptor.java:249)
com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:98)
com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:246)
com.opensymphony.xwork2.interceptor.StaticParametersInterceptor.intercept(StaticParametersInterceptor.java:191)
com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:246)
org.apache.struts2.interceptor.MultiselectInterceptor.intercept(MultiselectInterceptor.java:73)
com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:246)
org.apache.struts2.interceptor.CheckboxInterceptor.intercept(CheckboxInterceptor.java:91)
com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:246)
org.apache.struts2.interceptor.FileUploadInterceptor.intercept(FileUploadInterceptor.java:252)
com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:246)
com.opensymphony.xwork2.interceptor.ModelDrivenInterceptor.intercept(ModelDrivenInterceptor.java:100)
com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:246)
com.opensymphony.xwork2.interceptor.ScopedModelDrivenInterceptor.intercept(ScopedModelDrivenInterceptor.java:141)
com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:246)
com.opensymphony.xwork2.interceptor.ChainingInterceptor.intercept(ChainingInterceptor.java:145)
com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:246)
com.opensymphony.xwork2.interceptor.PrepareInterceptor.doIntercept(PrepareInterceptor.java:171)
com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:98)
com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:246)
com.opensymphony.xwork2.interceptor.I18nInterceptor.intercept(I18nInterceptor.java:139)
com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:246)
org.apache.struts2.interceptor.ServletConfigInterceptor.intercept(ServletConfigInterceptor.java:164)
com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:246)
com.opensymphony.xwork2.interceptor.AliasInterceptor.intercept(AliasInterceptor.java:193)
com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:246)
com.opensymphony.xwork2.interceptor.ExceptionMappingInterceptor.intercept(ExceptionMappingInterceptor.java:189)
com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:246)
org.apache.struts2.impl.StrutsActionProxy.execute(StrutsActionProxy.java:54)
org.apache.struts2.dispatcher.Dispatcher.serviceAction(Dispatcher.java:562)
org.apache.struts2.dispatcher.ng.ExecuteOperations.executeAction(ExecuteOperations.java:77)
org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter.doFilter(StrutsPrepareAndExecuteFilter.java:99)
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:222)
org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:123)
org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:502)
org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:171)
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:99)
org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:953)
org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)
org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:408)
org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1023)
org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:589)
org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:310)
java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
java.lang.Thread.run(Unknown Source)
org.hibernate.exception.JDBCConnectionException: Could not open connection
org.hibernate.exception.internal.SQLStateConversionDelegate.convert(SQLStateConversionDelegate.java:132)
org.hibernate.exception.internal.StandardSQLExceptionConverter.convert(StandardSQLExceptionConverter.java:49)
org.hibernate.engine.jdbc.spi.SqlExceptionHelper.convert(SqlExceptionHelper.java:125)
org.hibernate.engine.jdbc.spi.SqlExceptionHelper.convert(SqlExceptionHelper.java:110)
org.hibernate.engine.jdbc.internal.LogicalConnectionImpl.obtainConnection(LogicalConnectionImpl.java:221)
org.hibernate.engine.jdbc.internal.LogicalConnectionImpl.getConnection(LogicalConnectionImpl.java:157)
org.hibernate.engine.jdbc.internal.StatementPreparerImpl.connection(StatementPreparerImpl.java:56)
org.hibernate.engine.jdbc.internal.StatementPreparerImpl$5.doPrepare(StatementPreparerImpl.java:159)
org.hibernate.engine.jdbc.internal.StatementPreparerImpl$StatementPreparationTemplate.prepareStatement(StatementPreparerImpl.java:183)
org.hibernate.engine.jdbc.internal.StatementPreparerImpl.prepareQueryStatement(StatementPreparerImpl.java:157)
org.hibernate.loader.Loader.prepareQueryStatement(Loader.java:1881)
org.hibernate.loader.Loader.executeQueryStatement(Loader.java:1858)
org.hibernate.loader.Loader.executeQueryStatement(Loader.java:1838)
org.hibernate.loader.Loader.doQuery(Loader.java:906)
org.hibernate.loader.Loader.doQueryAndInitializeNonLazyCollections(Loader.java:348)
org.hibernate.loader.Loader.doList(Loader.java:2548)
org.hibernate.loader.Loader.doList(Loader.java:2534)
org.hibernate.loader.Loader.listIgnoreQueryCache(Loader.java:2364)
org.hibernate.loader.Loader.list(Loader.java:2359)
org.hibernate.loader.hql.QueryLoader.list(QueryLoader.java:495)
org.hibernate.hql.internal.ast.QueryTranslatorImpl.list(QueryTranslatorImpl.java:357)
org.hibernate.engine.query.spi.HQLQueryPlan.performList(HQLQueryPlan.java:195)
org.hibernate.internal.SessionImpl.list(SessionImpl.java:1194)
org.hibernate.internal.QueryImpl.list(QueryImpl.java:101)
org.hibernate.ejb.QueryImpl.getResultList(QueryImpl.java:266)
sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
java.lang.reflect.Method.invoke(Unknown Source)
org.springframework.orm.jpa.SharedEntityManagerCreator$DeferredQueryInvocationHandler.invoke(SharedEntityManagerCreator.java:311)
com.sun.proxy.$Proxy19.getResultList(Unknown Source)
com.sc.dao.LoginDao.AuthenticationCheck(LoginDao.java:32)
com.sc.service.LoginService.isValidUser(LoginService.java:20)
com.sc.web.LoginAction.execute(LoginAction.java:24)
sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
java.lang.reflect.Method.invoke(Unknown Source)
com.opensymphony.xwork2.DefaultActionInvocation.invokeAction(DefaultActionInvocation.java:450)
com.opensymphony.xwork2.DefaultActionInvocation.invokeActionOnly(DefaultActionInvocation.java:289)
com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:252)
org.apache.struts2.interceptor.DeprecationInterceptor.intercept(DeprecationInterceptor.java:41)
com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:246)
org.apache.struts2.interceptor.debugging.DebuggingInterceptor.intercept(DebuggingInterceptor.java:256)
com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:246)
com.opensymphony.xwork2.interceptor.DefaultWorkflowInterceptor.doIntercept(DefaultWorkflowInterceptor.java:167)
com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:98)
com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:246)
com.opensymphony.xwork2.validator.ValidationInterceptor.doIntercept(ValidationInterceptor.java:265)
org.apache.struts2.interceptor.validation.AnnotationValidationInterceptor.doIntercept(AnnotationValidationInterceptor.java:68)
com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:98)
com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:246)
com.opensymphony.xwork2.interceptor.ConversionErrorInterceptor.intercept(ConversionErrorInterceptor.java:138)
com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:246)
com.opensymphony.xwork2.interceptor.ParametersInterceptor.doIntercept(ParametersInterceptor.java:249)
com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:98)
com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:246)
com.opensymphony.xwork2.interceptor.ParametersInterceptor.doIntercept(ParametersInterceptor.java:249)
com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:98)
com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:246)
com.opensymphony.xwork2.interceptor.StaticParametersInterceptor.intercept(StaticParametersInterceptor.java:191)
com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:246)
org.apache.struts2.interceptor.MultiselectInterceptor.intercept(MultiselectInterceptor.java:73)
com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:246)
org.apache.struts2.interceptor.CheckboxInterceptor.intercept(CheckboxInterceptor.java:91)
com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:246)
org.apache.struts2.interceptor.FileUploadInterceptor.intercept(FileUploadInterceptor.java:252)
com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:246)
com.opensymphony.xwork2.interceptor.ModelDrivenInterceptor.intercept(ModelDrivenInterceptor.java:100)
com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:246)
com.opensymphony.xwork2.interceptor.ScopedModelDrivenInterceptor.intercept(ScopedModelDrivenInterceptor.java:141)
com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:246)
com.opensymphony.xwork2.interceptor.ChainingInterceptor.intercept(ChainingInterceptor.java:145)
com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:246)
com.opensymphony.xwork2.interceptor.PrepareInterceptor.doIntercept(PrepareInterceptor.java:171)
com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:98)
com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:246)
com.opensymphony.xwork2.interceptor.I18nInterceptor.intercept(I18nInterceptor.java:139)
com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:246)
org.apache.struts2.interceptor.ServletConfigInterceptor.intercept(ServletConfigInterceptor.java:164)
com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:246)
com.opensymphony.xwork2.interceptor.AliasInterceptor.intercept(AliasInterceptor.java:193)
com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:246)
com.opensymphony.xwork2.interceptor.ExceptionMappingInterceptor.intercept(ExceptionMappingInterceptor.java:189)
com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:246)
org.apache.struts2.impl.StrutsActionProxy.execute(StrutsActionProxy.java:54)
org.apache.struts2.dispatcher.Dispatcher.serviceAction(Dispatcher.java:562)
org.apache.struts2.dispatcher.ng.ExecuteOperations.executeAction(ExecuteOperations.java:77)
org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter.doFilter(StrutsPrepareAndExecuteFilter.java:99)
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:222)
org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:123)
org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:502)
org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:171)
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:99)
org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:953)
org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)
org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:408)
org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1023)
org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:589)
org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:310)
java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
java.lang.Thread.run(Unknown Source)
Here is my application context file.
<context:property-placeholder location="classpath*:*.properties" />
<context:component-scan base-package="com.sc.service" />
<context:component-scan base-package="com.sc.web" />
<context:component-scan base-package="com.sc.data" />
<context:component-scan base-package="com.sc.dao" />
<task:annotation-driven/>
<bean class="org.springframework.orm.jpa.support.PersistenceAnnotationBeanPostProcessor" />
<bean id="dataSource" class="org.springframework.jdbc.datasource.DriverManagerDataSource">
<property name = "driverClassName" value="com.mysql.jdbc.Driver" />
<property name="url" value="jdbc:mysql://localhost/myDB"/>
<property name="username" value="root"/>
<property name="password" value="root"/>
</bean>
<bean id="entityManagerFactory"
class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean">
<property name="dataSource" ref="dataSource" />
<property name="jpaVendorAdapter">
<bean class="org.springframework.orm.jpa.vendor.HibernateJpaVendorAdapter">
<property name="database" value="MYSQL" />
<property name="showSql" value="true" />
</bean>
</property>
</bean>
<bean id="jdbcTemplate" class="org.springframework.jdbc.core.JdbcTemplate">
<property name="dataSource" ref="dataSource" />
</bean>
<bean id="transactionManager" class="org.springframework.orm.jpa.JpaTransactionManager">
<property name="entityManagerFactory" ref="entityManagerFactory" />
</bean>
<tx:annotation-driven transaction-manager="transactionManager" />
Any help would be appreciated :)
Could it be that you are a behind a firewall? If yes you need to open the port to the default DB Server.
Try ping to the remote Database Server. This answer is only usefully if you not work on a local machine.
I see two thing at first you define a Database Bean, then you define a EntityManager.
Perhaps that can help you:
http://www.mkyong.com/spring/maven-spring-jdbc-example/
We developed a Red5 application which uses MySQL as a database with hibernate. After an idle period (8-9 hours), we cant connect to database and get the following error:
2014-04-02 23:08:43,329 [http-0.0.0.0-5080-exec-1] DEBUG o.h.e.jdbc.spi.SqlExceptionHelper - could not extract ResultSet [n/a]
com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure
The last packet successfully received from the server was 30,065,241 milliseconds ago. The last packet sent successfully to the server was 16 milliseconds ago.
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) ~[na:1.6.0_27]
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:57) ~[na:1.6.0_27]
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) ~[na:1.6.0_27]
at java.lang.reflect.Constructor.newInstance(Constructor.java:534) ~[na:1.6.0_27]
at com.mysql.jdbc.Util.handleNewInstance(Util.java:411) ~[mysql-connector-java-5.1.26-bin.jar:na]
at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1121) ~[mysql-connector-java-5.1.26-bin.jar:na]
at com.mysql.jdbc.MysqlIO.reuseAndReadPacket(MysqlIO.java:3673) ~[mysql-connector-java-5.1.26-bin.jar:na]
at com.mysql.jdbc.MysqlIO.reuseAndReadPacket(MysqlIO.java:3562) ~[mysql-connector-java-5.1.26-bin.jar:na]
at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4113) ~[mysql-connector-java-5.1.26-bin.jar:na]
at com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:2570) ~[mysql-connector-java-5.1.26-bin.jar:na]
at com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:2731) ~[mysql-connector-java-5.1.26-bin.jar:na]
at com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2818) ~[mysql-connector-java-5.1.26-bin.jar:na]
at com.mysql.jdbc.PreparedStatement.executeInternal(PreparedStatement.java:2157) ~[mysql-connector-java-5.1.26-bin.jar:na]
at com.mysql.jdbc.PreparedStatement.executeQuery(PreparedStatement.java:2324) ~[mysql-connector-java-5.1.26-bin.jar:na]
at org.hibernate.engine.jdbc.internal.ResultSetReturnImpl.extract(ResultSetReturnImpl.java:56) ~[hibernate-core-4.2.5.Final.jar:4.2.5.Final]
at org.hibernate.loader.Loader.getResultSet(Loader.java:2040) [hibernate-core-4.2.5.Final.jar:4.2.5.Final]
at org.hibernate.loader.Loader.executeQueryStatement(Loader.java:1837) [hibernate-core-4.2.5.Final.jar:4.2.5.Final]
at org.hibernate.loader.Loader.executeQueryStatement(Loader.java:1816) [hibernate-core-4.2.5.Final.jar:4.2.5.Final]
at org.hibernate.loader.Loader.doQuery(Loader.java:900) [hibernate-core-4.2.5.Final.jar:4.2.5.Final]
at org.hibernate.loader.Loader.doQueryAndInitializeNonLazyCollections(Loader.java:342) [hibernate-core-4.2.5.Final.jar:4.2.5.Final]
at org.hibernate.loader.Loader.doList(Loader.java:2526) [hibernate-core-4.2.5.Final.jar:4.2.5.Final]
at org.hibernate.loader.Loader.doList(Loader.java:2512) [hibernate-core-4.2.5.Final.jar:4.2.5.Final]
at org.hibernate.loader.Loader.listIgnoreQueryCache(Loader.java:2342) [hibernate-core-4.2.5.Final.jar:4.2.5.Final]
at org.hibernate.loader.Loader.list(Loader.java:2337) [hibernate-core-4.2.5.Final.jar:4.2.5.Final]
at org.hibernate.loader.hql.QueryLoader.list(QueryLoader.java:495) [hibernate-core-4.2.5.Final.jar:4.2.5.Final]
at org.hibernate.hql.internal.ast.QueryTranslatorImpl.list(QueryTranslatorImpl.java:356) [hibernate-core-4.2.5.Final.jar:4.2.5.Final]
at org.hibernate.engine.query.spi.HQLQueryPlan.performList(HQLQueryPlan.java:195) [hibernate-core-4.2.5.Final.jar:4.2.5.Final]
at org.hibernate.internal.SessionImpl.list(SessionImpl.java:1269) [hibernate-core-4.2.5.Final.jar:4.2.5.Final]
at org.hibernate.internal.QueryImpl.list(QueryImpl.java:101) [hibernate-core-4.2.5.Final.jar:4.2.5.Final]
at org.hibernate.ejb.QueryImpl.getResultList(QueryImpl.java:268) [hibernate-entitymanager-4.2.5.Final.jar:4.2.5.Final]
at org.red5.core.manager.StreamManager.getAllStreamList(StreamManager.java:304) [StreamManager.class:na]
at org.red5.core.manager.StreamManager.removeGhostStreams(StreamManager.java:76) [StreamManager.class:na]
at org.red5.core.manager.StreamManager.getLiveStreams(StreamManager.java:45) [StreamManager.class:na]
at org.red5.core.Application.getLiveStreams(Application.java:176) [Application.class:na]
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:1.6.0_27]
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57) ~[na:1.6.0_27]
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:1.6.0_27]
at java.lang.reflect.Method.invoke(Method.java:622) ~[na:1.6.0_27]
at org.red5.server.service.ServiceInvoker.invoke(ServiceInvoker.java:196) [red5.jar:na]
at org.red5.server.service.ServiceInvoker.invoke(ServiceInvoker.java:115) [red5.jar:na]
at org.red5.server.net.servlet.AMFGatewayServlet.handleRemotingPacket(AMFGatewayServlet.java:258) [red5.jar:na]
at org.red5.server.net.servlet.AMFGatewayServlet.serviceAMF(AMFGatewayServlet.java:180) [red5.jar:na]
at org.red5.server.net.servlet.AMFGatewayServlet.service(AMFGatewayServlet.java:118) [red5.jar:na]
at javax.servlet.http.HttpServlet.service(HttpServlet.java:717) [javaee-api-5.1.2.jar:5.1.2]
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290) [catalina-6.0.36.jar:6.0.36]
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) [catalina-6.0.36.jar:6.0.36]
at org.red5.logging.LoggerContextFilter.doFilter(LoggerContextFilter.java:77) [red5.jar:na]
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235) [catalina-6.0.36.jar:6.0.36]
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) [catalina-6.0.36.jar:6.0.36]
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233) [catalina-6.0.36.jar:6.0.36]
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191) [catalina-6.0.36.jar:6.0.36]
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:470) [catalina-6.0.36.jar:6.0.36]
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127) [catalina-6.0.36.jar:6.0.36]
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:103) [catalina-6.0.36.jar:6.0.36]
at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:615) [catalina-6.0.36.jar:6.0.36]
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109) [catalina-6.0.36.jar:6.0.36]
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:293) [catalina-6.0.36.jar:6.0.36]
at org.apache.coyote.http11.Http11NioProcessor.process(Http11NioProcessor.java:891) [tomcat-coyote-6.0.36.jar:6.0.36]
at org.apache.coyote.http11.Http11NioProtocol$Http11ConnectionHandler.process(Http11NioProtocol.java:750) [tomcat-coyote-6.0.36.jar:6.0.36]
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.run(NioEndpoint.java:2282) [tomcat-coyote-6.0.36.jar:6.0.36]
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1146) [na:1.6.0_27]
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615) [na:1.6.0_27]
at java.lang.Thread.run(Thread.java:701) [na:1.6.0_27]
Caused by: java.io.EOFException: Can not read response from server. Expected to read 4 bytes, read 0 bytes before connection was unexpectedly lost.
at com.mysql.jdbc.MysqlIO.readFully(MysqlIO.java:3119) ~[mysql-connector-java-5.1.26-bin.jar:na]
at com.mysql.jdbc.MysqlIO.reuseAndReadPacket(MysqlIO.java:3573) ~[mysql-connector-java-5.1.26-bin.jar:na]
... 56 common frames omitted
2014-04-02 23:08:43,330 [http-0.0.0.0-5080-exec-1] WARN o.h.e.jdbc.spi.SqlExceptionHelper - SQL Error: 0, SQLState: 08S01
2014-04-02 23:08:43,330 [http-0.0.0.0-5080-exec-1] ERROR o.h.e.jdbc.spi.SqlExceptionHelper - Communications link failure
Here is Hibernate configuration:
<properties>
<property name="hibernate.connection.username" value="root" />
<property name="hibernate.connection.url" value="jdbc:mysql://localhost:3306/butterflydb" />
<property name="hibernate.connection.driver_class" value="com.mysql.jdbc.Driver" />
<property name="hibernate.default_schema" value="butterflydb" />
<property name="hibernate.connection.password" value="" />
<property name="hibernate.connection.useUnicode" value="true" />
<property name="hibernate.connection.characterEncoding" value="UTF-8" />
<property name="connection.provider_class" value="org.hibernate.connection.C3P0ConnectionProvider" />
<property name="c3p0.acquire_increment" value="1" />
<property name="c3p0.idle_test_period" value="60" />
<!-- seconds -->
<property name="c3p0.max_size" value="100" />
<property name="c3p0.max_statements" value="0" />
<property name="c3p0.min_size" value="10" />
<property name="c3p0.timeout" value="180" />
<!-- seconds -->
<property name="connection.autoReconnect" value="true" />
<property name="connection.autoReconnectForPools" value="true" />
<property name="connection.is-connection-validation-required" value="true" />
<property name="c3p0.preferredTestQuery" value="select 1;" />
<property name="c3p0.testConnectionOnCheckin" value="false" />
<property name="c3p0.testConnectionOnCheckout" value="true" />
</properties>
Your properties look appropriate, but I would add autoreconnect to your URI if were you; I've had really good luck with this parameter when using mysql.
jdbc:mysql://localhost/butterflydb?autoReconnect=true
I am building a webapp that uses JPA, Hibernate, and C3P0 to access a MySQL database. So far, it works fine, as long as I don't go over MySQL's wait_timeout. If I try loading a page after that timeout is triggered, I get the following error, and I have to restart my application.
javax.persistence.PersistenceException: org.hibernate.exception.JDBCConnectionException: could not prepare statement
at org.hibernate.ejb.AbstractEntityManagerImpl.convert(AbstractEntityManagerImpl.java:1387) ~[hibernate-entitymanager-4.2.7.Final.jar:4.2.7.Final]
at org.hibernate.ejb.AbstractEntityManagerImpl.convert(AbstractEntityManagerImpl.java:1310) ~[hibernate-entitymanager-4.2.7.Final.jar:4.2.7.Final]
at org.hibernate.ejb.QueryImpl.getResultList(QueryImpl.java:277) ~[hibernate-entitymanager-4.2.7.Final.jar:4.2.7.Final]
at [myApplication].services.ClassroomService.findSessions(ClassroomService.java:155) ~[[myApplication].shared-1.1.6-SNAPSHOT.jar:1.1.6-SNAPSHOT]
at [myApplication].portal.resources.AdminResource.getSessions(AdminResource.java:51) ~[classes/:na]
at sun.reflect.GeneratedMethodAccessor30.invoke(Unknown Source) ~[na:na]
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:1.7.0_40]
at java.lang.reflect.Method.invoke(Method.java:606) ~[na:1.7.0_40]
at com.sun.jersey.spi.container.JavaMethodInvokerFactory$1.invoke(JavaMethodInvokerFactory.java:60) [jersey-server-1.17.1.jar:1.17.1]
at com.sun.jersey.server.impl.model.method.dispatch.AbstractResourceMethodDispatchProvider$TypeOutInvoker._dispatch(AbstractResourceMethodDispatchProvider.java:185) [jersey-server-1.17.1.jar:1.17.1]
at com.sun.jersey.server.impl.model.method.dispatch.ResourceJavaMethodDispatcher.dispatch(ResourceJavaMethodDispatcher.java:75) [jersey-server-1.17.1.jar:1.17.1]
at com.sun.jersey.server.impl.uri.rules.HttpMethodRule.accept(HttpMethodRule.java:302) [jersey-server-1.17.1.jar:1.17.1]
at com.sun.jersey.server.impl.uri.rules.RightHandPathRule.accept(RightHandPathRule.java:147) [jersey-server-1.17.1.jar:1.17.1]
at com.sun.jersey.server.impl.uri.rules.ResourceClassRule.accept(ResourceClassRule.java:108) [jersey-server-1.17.1.jar:1.17.1]
at com.sun.jersey.server.impl.uri.rules.RightHandPathRule.accept(RightHandPathRule.java:147) [jersey-server-1.17.1.jar:1.17.1]
at com.sun.jersey.server.impl.uri.rules.RootResourceClassesRule.accept(RootResourceClassesRule.java:84) [jersey-server-1.17.1.jar:1.17.1]
at com.sun.jersey.server.impl.application.WebApplicationImpl._handleRequest(WebApplicationImpl.java:1511) [jersey-server-1.17.1.jar:1.17.1]
at com.sun.jersey.server.impl.application.WebApplicationImpl._handleRequest(WebApplicationImpl.java:1442) [jersey-server-1.17.1.jar:1.17.1]
at com.sun.jersey.server.impl.application.WebApplicationImpl.handleRequest(WebApplicationImpl.java:1391) [jersey-server-1.17.1.jar:1.17.1]
at com.sun.jersey.server.impl.application.WebApplicationImpl.handleRequest(WebApplicationImpl.java:1381) [jersey-server-1.17.1.jar:1.17.1]
at com.sun.jersey.spi.container.servlet.WebComponent.service(WebComponent.java:416) [jersey-servlet-1.17.1.jar:1.17.1]
at com.sun.jersey.spi.container.servlet.ServletContainer.service(ServletContainer.java:538) [jersey-servlet-1.17.1.jar:1.17.1]
at com.sun.jersey.spi.container.servlet.ServletContainer.service(ServletContainer.java:716) [jersey-servlet-1.17.1.jar:1.17.1]
at javax.servlet.http.HttpServlet.service(HttpServlet.java:848) [javax.servlet-3.0.0.v201112011016.jar:na]
at com.google.inject.servlet.ServletDefinition.doService(ServletDefinition.java:263) [guice-servlet-3.0.jar:na]
at com.google.inject.servlet.ServletDefinition.service(ServletDefinition.java:178) [guice-servlet-3.0.jar:na]
at com.google.inject.servlet.ManagedServletPipeline.service(ManagedServletPipeline.java:91) [guice-servlet-3.0.jar:na]
at com.google.inject.servlet.FilterChainInvocation.doFilter(FilterChainInvocation.java:62) [guice-servlet-3.0.jar:na]
at [myApplication].web.CorsFilter.doFilter(CorsFilter.java:59) [[myApplication].shared-1.1.6-SNAPSHOT.jar:1.1.6-SNAPSHOT]
at com.google.inject.servlet.FilterDefinition.doFilter(FilterDefinition.java:163) [guice-servlet-3.0.jar:na]
at com.google.inject.servlet.FilterChainInvocation.doFilter(FilterChainInvocation.java:58) [guice-servlet-3.0.jar:na]
at com.google.inject.servlet.ManagedFilterPipeline.dispatch(ManagedFilterPipeline.java:118) [guice-servlet-3.0.jar:na]
at com.google.inject.servlet.GuiceFilter.doFilter(GuiceFilter.java:113) [guice-servlet-3.0.jar:na]
at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1419) [jetty-servlet-8.1.11.v20130520.jar:8.1.11.v20130520]
at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:455) [jetty-servlet-8.1.11.v20130520.jar:8.1.11.v20130520]
at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:137) [jetty-server-8.1.11.v20130520.jar:8.1.11.v20130520]
at org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:557) [jetty-security-8.1.11.v20130520.jar:8.1.11.v20130520]
at org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:231) [jetty-server-8.1.11.v20130520.jar:8.1.11.v20130520]
at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1075) [jetty-server-8.1.11.v20130520.jar:8.1.11.v20130520]
at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:384) [jetty-servlet-8.1.11.v20130520.jar:8.1.11.v20130520]
at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:193) [jetty-server-8.1.11.v20130520.jar:8.1.11.v20130520]
at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1009) [jetty-server-8.1.11.v20130520.jar:8.1.11.v20130520]
at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:135) [jetty-server-8.1.11.v20130520.jar:8.1.11.v20130520]
at org.eclipse.jetty.server.handler.ContextHandlerCollection.handle(ContextHandlerCollection.java:255) [jetty-server-8.1.11.v20130520.jar:8.1.11.v20130520]
at org.eclipse.jetty.server.handler.HandlerCollection.handle(HandlerCollection.java:154) [jetty-server-8.1.11.v20130520.jar:8.1.11.v20130520]
at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:116) [jetty-server-8.1.11.v20130520.jar:8.1.11.v20130520]
at org.eclipse.jetty.server.Server.handle(Server.java:370) [jetty-server-8.1.11.v20130520.jar:8.1.11.v20130520]
at org.eclipse.jetty.server.AbstractHttpConnection.handleRequest(AbstractHttpConnection.java:489) [jetty-server-8.1.11.v20130520.jar:8.1.11.v20130520]
at org.eclipse.jetty.server.AbstractHttpConnection.headerComplete(AbstractHttpConnection.java:949) [jetty-server-8.1.11.v20130520.jar:8.1.11.v20130520]
at org.eclipse.jetty.server.AbstractHttpConnection$RequestHandler.headerComplete(AbstractHttpConnection.java:1011) [jetty-server-8.1.11.v20130520.jar:8.1.11.v20130520]
at org.eclipse.jetty.http.HttpParser.parseNext(HttpParser.java:644) [jetty-http-8.1.11.v20130520.jar:8.1.11.v20130520]
at org.eclipse.jetty.http.HttpParser.parseAvailable(HttpParser.java:235) [jetty-http-8.1.11.v20130520.jar:8.1.11.v20130520]
at org.eclipse.jetty.server.AsyncHttpConnection.handle(AsyncHttpConnection.java:82) [jetty-server-8.1.11.v20130520.jar:8.1.11.v20130520]
at org.eclipse.jetty.io.nio.SelectChannelEndPoint.handle(SelectChannelEndPoint.java:668) [jetty-io-8.1.11.v20130520.jar:8.1.11.v20130520]
at org.eclipse.jetty.io.nio.SelectChannelEndPoint$1.run(SelectChannelEndPoint.java:52) [jetty-io-8.1.11.v20130520.jar:8.1.11.v20130520]
at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:608) [jetty-util-8.1.11.v20130520.jar:8.1.11.v20130520]
at org.eclipse.jetty.util.thread.QueuedThreadPool$3.run(QueuedThreadPool.java:543) [jetty-util-8.1.11.v20130520.jar:8.1.11.v20130520]
at java.lang.Thread.run(Thread.java:724) [na:1.7.0_40]
Caused by: org.hibernate.exception.JDBCConnectionException: could not prepare statement
at org.hibernate.exception.internal.SQLExceptionTypeDelegate.convert(SQLExceptionTypeDelegate.java:67) ~[hibernate-core-4.2.7.Final.jar:4.2.7.Final]
at org.hibernate.exception.internal.StandardSQLExceptionConverter.convert(StandardSQLExceptionConverter.java:49) ~[hibernate-core-4.2.7.Final.jar:4.2.7.Final]
at org.hibernate.engine.jdbc.spi.SqlExceptionHelper.convert(SqlExceptionHelper.java:125) ~[hibernate-core-4.2.7.Final.jar:4.2.7.Final]
at org.hibernate.engine.jdbc.internal.StatementPreparerImpl$StatementPreparationTemplate.prepareStatement(StatementPreparerImpl.java:188) ~[hibernate-core-4.2.7.Final.jar:4.2.7.Final]
at org.hibernate.engine.jdbc.internal.StatementPreparerImpl.prepareQueryStatement(StatementPreparerImpl.java:159) ~[hibernate-core-4.2.7.Final.jar:4.2.7.Final]
at org.hibernate.loader.Loader.prepareQueryStatement(Loader.java:1859) ~[hibernate-core-4.2.7.Final.jar:4.2.7.Final]
at org.hibernate.loader.Loader.executeQueryStatement(Loader.java:1836) ~[hibernate-core-4.2.7.Final.jar:4.2.7.Final]
at org.hibernate.loader.Loader.executeQueryStatement(Loader.java:1816) ~[hibernate-core-4.2.7.Final.jar:4.2.7.Final]
at org.hibernate.loader.Loader.doQuery(Loader.java:900) ~[hibernate-core-4.2.7.Final.jar:4.2.7.Final]
at org.hibernate.loader.Loader.doQueryAndInitializeNonLazyCollections(Loader.java:342) ~[hibernate-core-4.2.7.Final.jar:4.2.7.Final]
at org.hibernate.loader.Loader.doList(Loader.java:2526) ~[hibernate-core-4.2.7.Final.jar:4.2.7.Final]
at org.hibernate.loader.Loader.doList(Loader.java:2512) ~[hibernate-core-4.2.7.Final.jar:4.2.7.Final]
at org.hibernate.loader.Loader.listIgnoreQueryCache(Loader.java:2342) ~[hibernate-core-4.2.7.Final.jar:4.2.7.Final]
at org.hibernate.loader.Loader.list(Loader.java:2337) ~[hibernate-core-4.2.7.Final.jar:4.2.7.Final]
at org.hibernate.loader.hql.QueryLoader.list(QueryLoader.java:495) ~[hibernate-core-4.2.7.Final.jar:4.2.7.Final]
at org.hibernate.hql.internal.ast.QueryTranslatorImpl.list(QueryTranslatorImpl.java:357) ~[hibernate-core-4.2.7.Final.jar:4.2.7.Final]
at org.hibernate.engine.query.spi.HQLQueryPlan.performList(HQLQueryPlan.java:195) ~[hibernate-core-4.2.7.Final.jar:4.2.7.Final]
at org.hibernate.internal.SessionImpl.list(SessionImpl.java:1275) ~[hibernate-core-4.2.7.Final.jar:4.2.7.Final]
at org.hibernate.internal.QueryImpl.list(QueryImpl.java:101) ~[hibernate-core-4.2.7.Final.jar:4.2.7.Final]
at org.hibernate.ejb.QueryImpl.getResultList(QueryImpl.java:268) ~[hibernate-entitymanager-4.2.7.Final.jar:4.2.7.Final]
... 55 common frames omitted
Caused by: com.mysql.jdbc.exceptions.jdbc4.MySQLNonTransientConnectionException: No operations allowed after connection closed.Connection was implicitly closed due to underlying exception/error:
** BEGIN NESTED EXCEPTION **
com.mysql.jdbc.exceptions.jdbc4.CommunicationsException
MESSAGE: Communications link failure
Last packet sent to the server was 0 ms ago.
STACKTRACE:
com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure
Last packet sent to the server was 0 ms ago.
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:57)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
at java.lang.reflect.Constructor.newInstance(Constructor.java:526)
at com.mysql.jdbc.Util.handleNewInstance(Util.java:406)
at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1074)
at com.mysql.jdbc.MysqlIO.reuseAndReadPacket(MysqlIO.java:2985)
at com.mysql.jdbc.MysqlIO.reuseAndReadPacket(MysqlIO.java:2871)
at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3414)
at com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:1936)
at com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:2060)
at com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2542)
at com.mysql.jdbc.PreparedStatement.executeInternal(PreparedStatement.java:1734)
at com.mysql.jdbc.PreparedStatement.executeQuery(PreparedStatement.java:1885)
at com.mchange.v2.c3p0.impl.NewProxyPreparedStatement.executeQuery(NewProxyPreparedStatement.java:116)
at org.hibernate.engine.jdbc.internal.ResultSetReturnImpl.extract(ResultSetReturnImpl.java:56)
at org.hibernate.loader.Loader.getResultSet(Loader.java:2040)
at org.hibernate.loader.Loader.executeQueryStatement(Loader.java:1837)
at org.hibernate.loader.Loader.executeQueryStatement(Loader.java:1816)
at org.hibernate.loader.Loader.doQuery(Loader.java:900)
at org.hibernate.loader.Loader.doQueryAndInitializeNonLazyCollections(Loader.java:342)
at org.hibernate.loader.Loader.doList(Loader.java:2526)
at org.hibernate.loader.Loader.doList(Loader.java:2512)
at org.hibernate.loader.Loader.listIgnoreQueryCache(Loader.java:2342)
at org.hibernate.loader.Loader.list(Loader.java:2337)
at org.hibernate.loader.hql.QueryLoader.list(QueryLoader.java:495)
at org.hibernate.hql.internal.ast.QueryTranslatorImpl.list(QueryTranslatorImpl.java:357)
at org.hibernate.engine.query.spi.HQLQueryPlan.performList(HQLQueryPlan.java:195)
at org.hibernate.internal.SessionImpl.list(SessionImpl.java:1275)
at org.hibernate.internal.QueryImpl.list(QueryImpl.java:101)
at org.hibernate.ejb.QueryImpl.getResultList(QueryImpl.java:268)
at [myApplication].services.ClassroomService.findSessions(ClassroomService.java:155)
at [myApplication].portal.resources.AdminResource.getSessions(AdminResource.java:51)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at com.sun.jersey.spi.container.JavaMethodInvokerFactory$1.invoke(JavaMethodInvokerFactory.java:60)
at com.sun.jersey.server.impl.model.method.dispatch.AbstractResourceMethodDispatchProvider$TypeOutInvoker._dispatch(AbstractResourceMethodDispatchProvider.java:185)
at com.sun.jersey.server.impl.model.method.dispatch.ResourceJavaMethodDispatcher.dispatch(ResourceJavaMethodDispatcher.java:75)
at com.sun.jersey.server.impl.uri.rules.HttpMethodRule.accept(HttpMethodRule.java:302)
at com.sun.jersey.server.impl.uri.rules.RightHandPathRule.accept(RightHandPathRule.java:147)
at com.sun.jersey.server.impl.uri.rules.ResourceClassRule.accept(ResourceClassRule.java:108)
at com.sun.jersey.server.impl.uri.rules.RightHandPathRule.accept(RightHandPathRule.java:147)
at com.sun.jersey.server.impl.uri.rules.RootResourceClassesRule.accept(RootResourceClassesRule.java:84)
at com.sun.jersey.server.impl.application.WebApplicationImpl._handleRequest(WebApplicationImpl.java:1511)
at com.sun.jersey.server.impl.application.WebApplicationImpl._handleRequest(WebApplicationImpl.java:1442)
at com.sun.jersey.server.impl.application.WebApplicationImpl.handleRequest(WebApplicationImpl.java:1391)
at com.sun.jersey.server.impl.application.WebApplicationImpl.handleRequest(WebApplicationImpl.java:1381)
at com.sun.jersey.spi.container.servlet.WebComponent.service(WebComponent.java:416)
at com.sun.jersey.spi.container.servlet.ServletContainer.service(ServletContainer.java:538)
at com.sun.jersey.spi.container.servlet.ServletContainer.service(ServletContainer.java:716)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:848)
at com.google.inject.servlet.ServletDefinition.doService(ServletDefinition.java:263)
at com.google.inject.servlet.ServletDefinition.service(ServletDefinition.java:178)
at com.google.inject.servlet.ManagedServletPipeline.service(ManagedServletPipeline.java:91)
at com.google.inject.servlet.FilterChainInvocation.doFilter(FilterChainInvocation.java:62)
at [myApplication].web.CorsFilter.doFilter(CorsFilter.java:59)
at com.google.inject.servlet.FilterDefinition.doFilter(FilterDefinition.java:163)
at com.google.inject.servlet.FilterChainInvocation.doFilter(FilterChainInvocation.java:58)
at com.google.inject.servlet.ManagedFilterPipeline.dispatch(ManagedFilterPipeline.java:118)
at com.google.inject.servlet.GuiceFilter.doFilter(GuiceFilter.java:113)
at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1419)
at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:455)
at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:137)
at org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:557)
at org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:231)
at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1075)
at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:384)
at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:193)
at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1009)
at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:135)
at org.eclipse.jetty.server.handler.ContextHandlerCollection.handle(ContextHandlerCollection.java:255)
at org.eclipse.jetty.server.handler.HandlerCollection.handle(HandlerCollection.java:154)
at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:116)
at org.eclipse.jetty.server.Server.handle(Server.java:370)
at org.eclipse.jetty.server.AbstractHttpConnection.handleRequest(AbstractHttpConnection.java:489)
at org.eclipse.jetty.server.AbstractHttpConnection.headerComplete(AbstractHttpConnection.java:949)
at org.eclipse.jetty.server.AbstractHttpConnection$RequestHandler.headerComplete(AbstractHttpConnection.java:1011)
at org.eclipse.jetty.http.HttpParser.parseNext(HttpParser.java:644)
at org.eclipse.jetty.http.HttpParser.parseAvailable(HttpParser.java:235)
at org.eclipse.jetty.server.AsyncHttpConnection.handle(AsyncHttpConnection.java:82)
at org.eclipse.jetty.io.nio.SelectChannelEndPoint.handle(SelectChannelEndPoint.java:668)
at org.eclipse.jetty.io.nio.SelectChannelEndPoint$1.run(SelectChannelEndPoint.java:52)
at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:608)
at org.eclipse.jetty.util.thread.QueuedThreadPool$3.run(QueuedThreadPool.java:543)
at java.lang.Thread.run(Thread.java:724)
Caused by: java.io.EOFException: Can not read response from server. Expected to read 4 bytes, read 0 bytes before connection was unexpectedly lost.
at com.mysql.jdbc.MysqlIO.readFully(MysqlIO.java:2431)
at com.mysql.jdbc.MysqlIO.reuseAndReadPacket(MysqlIO.java:2882)
... 80 more
** END NESTED EXCEPTION **
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) ~[na:1.7.0_40]
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:57) ~[na:1.7.0_40]
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) ~[na:1.7.0_40]
at java.lang.reflect.Constructor.newInstance(Constructor.java:526) ~[na:1.7.0_40]
at com.mysql.jdbc.Util.handleNewInstance(Util.java:406) ~[mysql-connector-java-5.1.6.jar:na]
at com.mysql.jdbc.Util.getInstance(Util.java:381) ~[mysql-connector-java-5.1.6.jar:na]
at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:984) ~[mysql-connector-java-5.1.6.jar:na]
at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:956) ~[mysql-connector-java-5.1.6.jar:na]
at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:926) ~[mysql-connector-java-5.1.6.jar:na]
at com.mysql.jdbc.ConnectionImpl.checkClosed(ConnectionImpl.java:1098) ~[mysql-connector-java-5.1.6.jar:na]
at com.mysql.jdbc.ConnectionImpl.prepareStatement(ConnectionImpl.java:4076) ~[mysql-connector-java-5.1.6.jar:na]
at com.mysql.jdbc.ConnectionImpl.prepareStatement(ConnectionImpl.java:4042) ~[mysql-connector-java-5.1.6.jar:na]
at com.mchange.v2.c3p0.impl.NewProxyConnection.prepareStatement(NewProxyConnection.java:162) ~[c3p0-0.9.2.1.jar:0.9.2.1]
at org.hibernate.engine.jdbc.internal.StatementPreparerImpl$5.doPrepare(StatementPreparerImpl.java:161) ~[hibernate-core-4.2.7.Final.jar:4.2.7.Final]
at org.hibernate.engine.jdbc.internal.StatementPreparerImpl$StatementPreparationTemplate.prepareStatement(StatementPreparerImpl.java:182) ~[hibernate-core-4.2.7.Final.jar:4.2.7.Final]
... 71 common frames omitted
Nov 26, 2013 11:40:43 AM com.sun.jersey.spi.container.ContainerResponse logException
SEVERE: Mapped exception to response: 500 (Internal Server Error)
[myApplication].api.ResourceException
at [myApplication].portal.resources.AdminResource.getSessions(AdminResource.java:68)
at sun.reflect.GeneratedMethodAccessor30.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at com.sun.jersey.spi.container.JavaMethodInvokerFactory$1.invoke(JavaMethodInvokerFactory.java:60)
at com.sun.jersey.server.impl.model.method.dispatch.AbstractResourceMethodDispatchProvider$TypeOutInvoker._dispatch(AbstractResourceMethodDispatchProvider.java:185)
at com.sun.jersey.server.impl.model.method.dispatch.ResourceJavaMethodDispatcher.dispatch(ResourceJavaMethodDispatcher.java:75)
at com.sun.jersey.server.impl.uri.rules.HttpMethodRule.accept(HttpMethodRule.java:302)
at com.sun.jersey.server.impl.uri.rules.RightHandPathRule.accept(RightHandPathRule.java:147)
at com.sun.jersey.server.impl.uri.rules.ResourceClassRule.accept(ResourceClassRule.java:108)
at com.sun.jersey.server.impl.uri.rules.RightHandPathRule.accept(RightHandPathRule.java:147)
at com.sun.jersey.server.impl.uri.rules.RootResourceClassesRule.accept(RootResourceClassesRule.java:84)
at com.sun.jersey.server.impl.application.WebApplicationImpl._handleRequest(WebApplicationImpl.java:1511)
at com.sun.jersey.server.impl.application.WebApplicationImpl._handleRequest(WebApplicationImpl.java:1442)
at com.sun.jersey.server.impl.application.WebApplicationImpl.handleRequest(WebApplicationImpl.java:1391)
at com.sun.jersey.server.impl.application.WebApplicationImpl.handleRequest(WebApplicationImpl.java:1381)
at com.sun.jersey.spi.container.servlet.WebComponent.service(WebComponent.java:416)
at com.sun.jersey.spi.container.servlet.ServletContainer.service(ServletContainer.java:538)
at com.sun.jersey.spi.container.servlet.ServletContainer.service(ServletContainer.java:716)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:848)
at com.google.inject.servlet.ServletDefinition.doService(ServletDefinition.java:263)
at com.google.inject.servlet.ServletDefinition.service(ServletDefinition.java:178)
at com.google.inject.servlet.ManagedServletPipeline.service(ManagedServletPipeline.java:91)
at com.google.inject.servlet.FilterChainInvocation.doFilter(FilterChainInvocation.java:62)
at [myApplication].web.CorsFilter.doFilter(CorsFilter.java:59)
at com.google.inject.servlet.FilterDefinition.doFilter(FilterDefinition.java:163)
at com.google.inject.servlet.FilterChainInvocation.doFilter(FilterChainInvocation.java:58)
at com.google.inject.servlet.ManagedFilterPipeline.dispatch(ManagedFilterPipeline.java:118)
at com.google.inject.servlet.GuiceFilter.doFilter(GuiceFilter.java:113)
at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1419)
at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:455)
at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:137)
at org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:557)
at org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:231)
at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1075)
at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:384)
at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:193)
at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1009)
at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:135)
at org.eclipse.jetty.server.handler.ContextHandlerCollection.handle(ContextHandlerCollection.java:255)
at org.eclipse.jetty.server.handler.HandlerCollection.handle(HandlerCollection.java:154)
at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:116)
at org.eclipse.jetty.server.Server.handle(Server.java:370)
at org.eclipse.jetty.server.AbstractHttpConnection.handleRequest(AbstractHttpConnection.java:489)
at org.eclipse.jetty.server.AbstractHttpConnection.headerComplete(AbstractHttpConnection.java:949)
at org.eclipse.jetty.server.AbstractHttpConnection$RequestHandler.headerComplete(AbstractHttpConnection.java:1011)
at org.eclipse.jetty.http.HttpParser.parseNext(HttpParser.java:644)
at org.eclipse.jetty.http.HttpParser.parseAvailable(HttpParser.java:235)
at org.eclipse.jetty.server.AsyncHttpConnection.handle(AsyncHttpConnection.java:82)
at org.eclipse.jetty.io.nio.SelectChannelEndPoint.handle(SelectChannelEndPoint.java:668)
at org.eclipse.jetty.io.nio.SelectChannelEndPoint$1.run(SelectChannelEndPoint.java:52)
at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:608)
at org.eclipse.jetty.util.thread.QueuedThreadPool$3.run(QueuedThreadPool.java:543)
at java.lang.Thread.run(Thread.java:724)
I also sometimes get a JDBCConnectionException: could not extract ResultSet, but that stems from the same Communications Link Failure.
Usually, C3P0 can be configured to test whether a connection is valid before using, and I tried implementing it, but it doesn't seem to work. I'm also using Guice, and I'm thinking something is going screwy when I use #Inject to get an EntityManager.
Does anyone know what's going on here? I've looked through pretty much anything that might help, but I haven't found anything yet. I'm about to try switching to Apache DBCP to see if that works any better.
Thanks,
Tyler
PS: Here's my persistence.xml and c3p0-config.xml, in case that'll help.
persistence.xml
<persistence xmlns="http://java.sun.com/xml/ns/persistence"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/persistence http://java.sun.com/xml/ns/persistence/persistence_2_0.xsd"
version="2.0">
<persistence-unit name="wam" transaction-type="RESOURCE_LOCAL">
<provider>org.hibernate.ejb.HibernatePersistence</provider>
<class>myApplication.beans.AnswerBean</class>
<class>myApplication.beans.ConfigBean</class>
<class>myApplication.beans.CourseBean</class>
<class>myApplication.beans.DealerBean</class>
<class>myApplication.beans.LocationBean</class>
<class>myApplication.beans.TrainerBean</class>
<class>myApplication.beans.PositionBean</class>
<class>myApplication.beans.QuestionBean</class>
<class>myApplication.beans.SessionBean</class>
<class>myApplication.beans.StudentBean</class>
<!-- See '/etc/setup.txt' for how to setup using MS-SQL * Change driver/dialect
(H2=H2Dialect / MSSQL=SQLServerDialect) * Change url below (jdbc.url)
* Change
user/password (jdbc.user and password) OPTIONAL: * Create Database first
(ie maildb) * Change hbm2ddl -->
<exclude-unlisted-classes>true</exclude-unlisted-classes>
<shared-cache-mode>ENABLE_SELECTIVE</shared-cache-mode>
<properties>
<property name="javax.persistence.jdbc.driver" value="${portal.db.driver}" />
<property name="javax.persistence.jdbc.url" value="${portal.db.url}" />
<property name="javax.persistence.jdbc.user" value="${portal.db.user}" />
<property name="javax.persistence.jdbc.password" value="${portal.db.pass}" />
<property name="hibernate.dialect" value="${portal.db.dialect}" />
<property name="hibernate.show_sql" value="false" />
<property name="hibernate.connection.shutdown" value="true" />
<property name="hibernate.generate_statistics" value="${stats}"/>
<property name="hibernate.hbm2ddl.auto" value="${portal.db.schema}" />
<!-- Caching -->
<property name="hibernate.cache.region.factory_class" value="org.hibernate.cache.ehcache.SingletonEhCacheRegionFactory"/>
<property name="net.sf.ehcache.configurationResourceName" value="ehcache.xml" />
<property name="hibernate.cache.use_query_cache" value="true" />
<property name="hibernate.cache.use_second_level_cache" value="true" />
<!-- Pooling -->
<property name="hibernate.connection.provider_class" value="org.hibernate.service.jdbc.connections.internal.C3P0ConnectionProvider" />
</properties>
</persistence-unit>
</persistence>
c3p0-config.xml
<c3p0-config>
<default-config>
<property name="acquireIncrement">3</property>
<property name="idleConnectionTestPeriod">9</property>
<property name="maxConnectionAge">30</property>
<property name="maxIdleTime">10</property>
<property name="maxPoolSize">25</property>
<property name="maxStatements">0</property>
<property name="minPoolSize">5</property>
<property name="preferredTestQuery">SELECT 1</property>
<property name="testConnectionOnCheckin">true</property>
</default-config>
</c3p0-config>
1) verify that the configuration you intend is actually the configuration that is taking hold. c3p0 pools dump their configuration to log at INFO on initialization. alternatively, you can check via JMX. if Guice is programmatically overriding the defaults you set in config, you should see that in the dumped config.
2) how are you managing your hibernate Sessions? are you close()ing them promptly, or reusing long-lived Sessions. if the latter, don't. when using a Connection pool, a Session should perform a unit-of-work defined as the full set of operations a client is able to perform without waiting for further interaction. once that work is completed, the Session should be promptly close()ed. keeping long-lived open Sessions is a terrible but unfortunately common practice; it defeats both the purpose of a Connection pool and its ability to ensure, e.g. in this case, liveness.
p.s. you're setting both testConnectionOnCheckout and testConnectionOnCheckin. that's probably overkill testConnectionOnCheckout is sufficient, simple and reliable but exacts a performance tax within clients' codepath. to avoid that tax (at cost of a bit of reliablility, combine testConnectionOnCheckin with idleConnectionTestPeriod. See http://www.mchange.com/projects/c3p0/#configuring_connection_testing
As it turns out, my problem wasn't with how C3P0 was working, but how Guice was making EntityManagers. I ended up adding filter("/*").through(PersistFilter.class); where I was making my persist modules, and that fixed the problem. Granted, it revealed a couple problems with eager singletons, but I'll leave that for another thread.
I want to get data from mysql database with the help of DataImportHandler so i can create indexes. Now I've configured my Solr instance so that it works on Tomcat (the example admin page), but if I try to change the sorlconfig.xml file i'll get the error message. I'm working with Solr 3.6
So my configuration is:
In solrconfig.xml I added:
<dataDir>${solr.data.dir:/usr/share/tomcat7/solr2}</dataDir>
to specify my working directory
and then
<requestHandler name="/dataimport" class="org.apache.solr.handler.dataimport.DataImportHandler">
<lst name="defaults">
<str name="config">/usr/share/tomcat7/solr2/conf/data-config.xml</str>
</lst>
</requestHandler>
to specify new request handler.
Theese two are my lib directives for DIH. Do i need to change them?
<lib dir="../../dist/" regex="apache-solr-dataimporthandler-\d.*\.jar" />
<lib dir="../../contrib/dataimporthandler/lib/" regex=".*\.jar" />
I also created data-config.xml file and added following:
<?xml version="1.0" encoding="UTF-8"?>
<dataConfig>
<dataSource type="JdbcDataSource"
driver="com.mysql.jdbc.Driver"
url="jdbc:mysql://localhost:3306/ethicsweb_experts"
user="root"
password=""/>
<document>
<entity name="experts" datasource="mysql" pk="mainid"
query="SELECT experts.mainid as mainid FROM experts WHERE validRec = 'y'">
<field column="mainid" name="mainid"/>
<field column="validRec" name="validRec"/>
</entity>
</document>
I've coppied following jars to tomcat/lib folder (DIH jar files and mysql JDBC connector jar file)
apache-solr-dataimporthandler-3.6.0.jar
apache-solr-dataimporthandler-extras-3.6.0.jar
mysql-connector-java-5.1.20-bin.jar
Also in the schema.xml file i added folowing fields:
<field name="mainid" type="int" indexed="true" stored="true" />
<field name="validRec" type="string" indexed="true" stored="true" />
<field name="recSource" type="string" indexed="true" stored="true" />
<uniqueKey>mainid</uniqueKey>
But now when i try to acces:
http://localhost:8080/solr2/
I get following output:
HTTP Status 500 - Severe errors in solr configuration. Check your log files for more detailed information on what may be wrong. If you want solr to continue after configuration errors, change: <abortOnConfigurationError>false</abortOnConfigurationError> in solr.xml -------------------------------------------------------------
org.apache.solr.common.SolrException: No cores were created, please check the logs for errors at org.apache.solr.core.CoreContainer$Initializer.initialize(CoreContainer.java:172)
at org.apache.solr.servlet.SolrDispatchFilter.init(SolrDispatchFilter.java:96)
at org.apache.catalina.core.ApplicationFilterConfig.initFilter(ApplicationFilterConfig.java:277)
at org.apache.catalina.core.ApplicationFilterConfig.getFilter(ApplicationFilterConfig.java:258)
at org.apache.catalina.core.ApplicationFilterConfig.setFilterDef(ApplicationFilterConfig.java:382)
at org.apache.catalina.core.ApplicationFilterConfig.<init>(ApplicationFilterConfig.java:103)
at org.apache.catalina.core.StandardContext.filterStart(StandardContext.java:4638)
at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5294)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:895)
at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:871)
at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:615)
at org.apache.catalina.startup.HostConfig.deployDescriptor(HostConfig.java:649)
at org.apache.catalina.startup.HostConfig$DeployDescriptor.run(HostConfig.java:1585)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471)
at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:334)
at java.util.concurrent.FutureTask.run(FutureTask.java:166)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603)
at java.lang.Thread.run(Thread.java:722)
-------------------------------------------------------------
java.lang.NoClassDefFoundError: org/apache/solr/util/plugin/SolrCoreAware
at java.lang.ClassLoader.defineClass1(Native Method)
at java.lang.ClassLoader.defineClass(ClassLoader.java:791)
at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142)
at java.net.URLClassLoader.defineClass(URLClassLoader.java:449)
at java.net.URLClassLoader.access$100(URLClassLoader.java:71)
at java.net.URLClassLoader$1.run(URLClassLoader.java:361)
at java.net.URLClassLoader$1.run(URLClassLoader.java:355)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:354)
at java.lang.ClassLoader.loadClass(ClassLoader.java:423)
at java.lang.ClassLoader.loadClass(ClassLoader.java:356)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:264)
at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1698)
at java.lang.ClassLoader.loadClass(ClassLoader.java:410)
at java.net.FactoryURLClassLoader.loadClass(URLClassLoader.java:789)
at java.lang.ClassLoader.loadClass(ClassLoader.java:356)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:264)
at org.apache.solr.core.SolrResourceLoader.findClass(SolrResourceLoader.java:378)
at org.apache.solr.core.SolrCore.createInstance(SolrCore.java:419)
at org.apache.solr.core.SolrCore.createRequestHandler(SolrCore.java:455)
at org.apache.solr.core.RequestHandlers.initHandlersFromConfig(RequestHandlers.java:159)
at org.apache.solr.core.SolrCore.<init>(SolrCore.java:563)
at org.apache.solr.core.CoreContainer.create(CoreContainer.java:483)
at org.apache.solr.core.CoreContainer.load(CoreContainer.java:335)
at org.apache.solr.core.CoreContainer.load(CoreContainer.java:219)
at org.apache.solr.core.CoreContainer$Initializer.initialize(CoreContainer.java:161)
at org.apache.solr.servlet.SolrDispatchFilter.init(SolrDispatchFilter.java:96)
at org.apache.catalina.core.ApplicationFilterConfig.initFilter(ApplicationFilterConfig.java:277)
at org.apache.catalina.core.ApplicationFilterConfig.getFilter(ApplicationFilterConfig.java:258)
at org.apache.catalina.core.ApplicationFilterConfig.setFilterDef(ApplicationFilterConfig.java:382)
at org.apache.catalina.core.ApplicationFilterConfig.<init>(ApplicationFilterConfig.java:103)
at org.apache.catalina.core.StandardContext.filterStart(StandardContext.java:4638)
at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5294)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:895)
at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:871)
at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:615)
at org.apache.catalina.startup.HostConfig.deployDescriptor(HostConfig.java:649)
at org.apache.catalina.startup.HostConfig$DeployDescriptor.run(HostConfig.java:1585)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471)
at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:334)
at java.util.concurrent.FutureTask.run(FutureTask.java:166)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603)
at java.lang.Thread.run(Thread.java:722) Caused by: java.lang.ClassNotFoundException: org.apache.solr.util.plugin.SolrCoreAware
at java.net.URLClassLoader$1.run(URLClassLoader.java:366)
at java.net.URLClassLoader$1.run(URLClassLoader.java:355)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:354)
at java.lang.ClassLoader.loadClass(ClassLoader.java:423)
at java.lang.ClassLoader.loadClass(ClassLoader.java:356) ... 47 more
My log entries show me that:
SEVERE: java.lang.NoClassDefFoundError: org/apache/solr/util/plugin/SolrCoreAware
at java.lang.ClassLoader.defineClass1(Native Method)
at java.lang.ClassLoader.defineClass(ClassLoader.java:791)
at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142)
at java.net.URLClassLoader.defineClass(URLClassLoader.java:449)
at java.net.URLClassLoader.access$100(URLClassLoader.java:71)
at java.net.URLClassLoader$1.run(URLClassLoader.java:361)
at java.net.URLClassLoader$1.run(URLClassLoader.java:355)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:354)
at java.lang.ClassLoader.loadClass(ClassLoader.java:423)
at java.lang.ClassLoader.loadClass(ClassLoader.java:356)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:264)
at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1698)
at java.lang.ClassLoader.loadClass(ClassLoader.java:410)
at java.net.FactoryURLClassLoader.loadClass(URLClassLoader.java:789)
at java.lang.ClassLoader.loadClass(ClassLoader.java:356)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:264)
at org.apache.solr.core.SolrResourceLoader.findClass(SolrResourceLoader.java:378)
at org.apache.solr.core.SolrCore.createInstance(SolrCore.java:419)
at org.apache.solr.core.SolrCore.createRequestHandler(SolrCore.java:455)
at org.apache.solr.core.RequestHandlers.initHandlersFromConfig(RequestHandlers.java:159)
at org.apache.solr.core.SolrCore.<init>(SolrCore.java:563)
at org.apache.solr.core.CoreContainer.create(CoreContainer.java:483)
at org.apache.solr.core.CoreContainer.load(CoreContainer.java:335)
at org.apache.solr.core.CoreContainer.load(CoreContainer.java:219)
at org.apache.solr.core.CoreContainer$Initializer.initialize(CoreContainer.java:161)
at org.apache.solr.servlet.SolrDispatchFilter.init(SolrDispatchFilter.java:96)
at org.apache.catalina.core.ApplicationFilterConfig.initFilter(ApplicationFilterConfig.java:277)
at org.apache.catalina.core.ApplicationFilterConfig.getFilter(ApplicationFilterConfig.java:258)
at org.apache.catalina.core.ApplicationFilterConfig.setFilterDef(ApplicationFilterConfig.java:382)
at org.apache.catalina.core.ApplicationFilterConfig.<init>(ApplicationFilterConfig.java:103)
at org.apache.catalina.core.StandardContext.filterStart(StandardContext.java:4638)
at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5294)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:895)
at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:871)
at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:615)
at org.apache.catalina.startup.HostConfig.deployDescriptor(HostConfig.java:649)
at org.apache.catalina.startup.HostConfig$DeployDescriptor.run(HostConfig.java:1585)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471)
at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:334)
at java.util.concurrent.FutureTask.run(FutureTask.java:166)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603)
at java.lang.Thread.run(Thread.java:722)
Caused by: java.lang.ClassNotFoundException: org.apache.solr.util.plugin.SolrCoreAware
at java.net.URLClassLoader$1.run(URLClassLoader.java:366)
at java.net.URLClassLoader$1.run(URLClassLoader.java:355)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:354)
at java.lang.ClassLoader.loadClass(ClassLoader.java:423)
at java.lang.ClassLoader.loadClass(ClassLoader.java:356)
... 47 more
Jun 15, 2012 4:07:50 PM org.apache.solr.servlet.SolrDispatchFilter init
SEVERE: Could not start Solr. Check solr/home property and the logs
org.apache.solr.common.SolrException: No cores were created, please check the logs for errors
at org.apache.solr.core.CoreContainer$Initializer.initialize(CoreContainer.java:172)
at org.apache.solr.servlet.SolrDispatchFilter.init(SolrDispatchFilter.java:96)
at org.apache.catalina.core.ApplicationFilterConfig.initFilter(ApplicationFilterConfig.java:277)
at org.apache.catalina.core.ApplicationFilterConfig.getFilter(ApplicationFilterConfig.java:258)
at org.apache.catalina.core.ApplicationFilterConfig.setFilterDef(ApplicationFilterConfig.java:382)
at org.apache.catalina.core.ApplicationFilterConfig.<init>(ApplicationFilterConfig.java:103)
at org.apache.catalina.core.StandardContext.filterStart(StandardContext.java:4638)
at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5294)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:895)
at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:871)
at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:615)
at org.apache.catalina.startup.HostConfig.deployDescriptor(HostConfig.java:649)
at org.apache.catalina.startup.HostConfig$DeployDescriptor.run(HostConfig.java:1585)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471)
at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:334)
at java.util.concurrent.FutureTask.run(FutureTask.java:166)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603)
at java.lang.Thread.run(Thread.java:722)
Jun 15, 2012 4:07:50 PM org.apache.solr.common.SolrException log
SEVERE: org.apache.solr.common.SolrException: No cores were created, please check the logs for errors
at org.apache.solr.core.CoreContainer$Initializer.initialize(CoreContainer.java:172)
at org.apache.solr.servlet.SolrDispatchFilter.init(SolrDispatchFilter.java:96)
at org.apache.catalina.core.ApplicationFilterConfig.initFilter(ApplicationFilterConfig.java:277)
at org.apache.catalina.core.ApplicationFilterConfig.getFilter(ApplicationFilterConfig.java:258)
at org.apache.catalina.core.ApplicationFilterConfig.setFilterDef(ApplicationFilterConfig.java:382)
at org.apache.catalina.core.ApplicationFilterConfig.<init>(ApplicationFilterConfig.java:103)
at org.apache.catalina.core.StandardContext.filterStart(StandardContext.java:4638)
at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5294)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:895)
at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:871)
at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:615)
at org.apache.catalina.startup.HostConfig.deployDescriptor(HostConfig.java:649)
at org.apache.catalina.startup.HostConfig$DeployDescriptor.run(HostConfig.java:1585)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471)
at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:334)
at java.util.concurrent.FutureTask.run(FutureTask.java:166)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603)
at java.lang.Thread.run(Thread.java:722)
So now I wonder where did I screw up the configuration for the DataImportHandler. Do I need to specify more jar files? Did I put jar files in the correct directory? Any help would be greatly appreciated.
The issue here is your "lib" entries with jar file location is not properly defined.
Depending on your solr.home entry, these dist, contrib folders are not resolving. For instance, you may need to additional "../" for this..
OK I've been battling with the same issue for hours. Something the solr 3.4 book didn't cover about the set up of DIH.
Leave the lib folder as is, in the example folder. Create a new folder inside example/solr called lib. Open up example/solr/solr.xml where the cores are configured and add the sharedLib attribute
<solr persistent="false" sharedLib="./lib">
Dump all your solr jars here!
There is some conflict issue with solr not loading them from the lib folder, I think thats for jetty libs.... but I wouldn't know for sure.
The war file which your server extracted doesn't have these DIH drivers in lib directory. Add it in there and that might solve your problem.
I was fighting for this for 5 hours and now it got working.