Grails Unable to create initial connections of pool - mysql

Question

When I run my Grails app and I get the following error
| Loading Grails 2.3.5
| Configuring classpath
| Configuring classpath.
| Environment set to development
| Environment set to development.
| Environment set to development..
| Environment set to development...
| Environment set to development....
| Environment set to development.....
| Packaging Grails application
| Packaging Grails application.
| Packaging Grails application..
| Packaging Grails application...
| Packaging Grails application....
| Packaging Grails application.....
| Compiling 1 source files
| Compiling 1 source files.
| Compiling 1 source files..
| Compiling 1 source files...
| Compiling 1 source files....
| Compiling 1 source files.....
| Running Grails application
| Error 2015-04-21 11:54:24,947 [localhost-startStop-1] ERROR pool.ConnectionPool - Unable to create initial connections of pool .
Message: Communications link failure
The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
Line | Method
->> 411 | handleNewInstance in com.mysql.jdbc.Util
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
| 1121 | createCommunicationsException in com.mysql.jdbc.SQLError
| 676 | readPacket . . . . . . . . . in com.mysql.jdbc.MysqlIO
| 1088 | doHandshake in ''
| 2493 | coreConnect . . . . . . . . . in com.mysql.jdbc.ConnectionImpl
| 2526 | connectOneTryOnly in ''
| 2311 | createNewIO . . . . . . . . . in ''
| 834 | <init> in ''
| 47 | <init> . . . . . . . . . . . in com.mysql.jdbc.JDBC4Connection
| 411 | handleNewInstance in com.mysql.jdbc.Util
| 416 | getInstance . . . . . . . . . in com.mysql.jdbc.ConnectionImpl
| 347 | connect in com.mysql.jdbc.NonRegisteringDriver
| 262 | run . . . . . . . . . . . . . in java.util.concurrent.FutureTask
| 1145 | runWorker in java.util.concurrent.ThreadPoolExecutor
| 615 | run . . . . . . . . . . . . . in java.util.concurrent.ThreadPoolExecutor$Worker
^ 745 | run in java.lang.Thread
Caused by EOFException: Can not read response from server. Expected to read 4 bytes, read 0 bytes before connection was unexpecte dly>
>->> 3166 | readFully in com.mysql.jdbc.MysqlIO>- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - >| 600 | readPacket in ''
| 1088 | doHandshake . . . . . . . . . in ''
| 2493 | coreConnect in com.mysql.jdbc.ConnectionImpl
| 2526 | connectOneTryOnly . . . . . . in ''
| 2311 | createNewIO in ''
| 834 | <init> . . . . . . . . . . . in ''
| 47 | <init> in com.mysql.jdbc.JDBC4Connection
| 411 | handleNewInstance . . . . . . in com.mysql.jdbc.Util
| 416 | getInstance in com.mysql.jdbc.ConnectionImpl
| 347 | connect . . . . . . . . . . . in com.mysql.jdbc.NonRegisteringDriver
| 262 | run in java.util.concurrent.FutureTask
| 1145 | runWorker . . . . . . . . . . in java.util.concurrent.ThreadPoolExecutor
| 615 | run in java.util.concurrent.ThreadPoolExecutor$Worker
^ 745 | run . . . . . . . . . . . . . in java.lang.Thread
| Error 2015-04-21 11:54:25,051 [localhost-startStop-1] ERROR pool.ConnectionPool - Unable to create initial connections of pool .
Message: Communications link failure
The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
Line | Method
->> 411 | handleNewInstance in com.mysql.jdbc.Util
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
| 1121 | createCommunicationsException in com.mysql.jdbc.SQLError
| 676 | readPacket . . . . . . . . . in com.mysql.jdbc.MysqlIO
| 1088 | doHandshake in ''
| 2493 | coreConnect . . . . . . . . . in com.mysql.jdbc.ConnectionImpl
| 2526 | connectOneTryOnly in ''
| 2311 | createNewIO . . . . . . . . . in ''
| 834 | <init> in ''
| 47 | <init> . . . . . . . . . . . in com.mysql.jdbc.JDBC4Connection
| 411 | handleNewInstance in com.mysql.jdbc.Util
| 416 | getInstance . . . . . . . . . in com.mysql.jdbc.ConnectionImpl
| 347 | connect in com.mysql.jdbc.NonRegisteringDriver
| 262 | run . . . . . . . . . . . . . in java.util.concurrent.FutureTask
| 1145 | runWorker in java.util.concurrent.ThreadPoolExecutor
| 615 | run . . . . . . . . . . . . . in java.util.concurrent.ThreadPoolExecutor$Worker
^ 745 | run in java.lang.Thread
Caused by EOFException: Can not read response from server. Expected to read 4 bytes, read 0 bytes before connection was unexpecte dly>
>->> 3166 | readFully in com.mysql.jdbc.MysqlIO>- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - >| 600 | readPacket in ''
| 1088 | doHandshake . . . . . . . . . in ''
| 2493 | coreConnect in com.mysql.jdbc.ConnectionImpl
| 2526 | connectOneTryOnly . . . . . . in ''
| 2311 | createNewIO in ''
| 834 | <init> . . . . . . . . . . . in ''
| 47 | <init> in com.mysql.jdbc.JDBC4Connection
| 411 | handleNewInstance . . . . . . in com.mysql.jdbc.Util
| 416 | getInstance in com.mysql.jdbc.ConnectionImpl
| 347 | connect . . . . . . . . . . . in com.mysql.jdbc.NonRegisteringDriver
| 262 | run in java.util.concurrent.FutureTask
| 1145 | runWorker . . . . . . . . . . in java.util.concurrent.ThreadPoolExecutor
| 615 | run in java.util.concurrent.ThreadPoolExecutor$Worker
^ 745 | run . . . . . . . . . . . . . in java.lang.Thread
| Error 2015-04-21 11:54:25,139 [localhost-startStop-1] ERROR pool.ConnectionPool - Unable to create initial connections of pool .
Message: Communications link failure
The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
Line | Method
->> 411 | handleNewInstance in com.mysql.jdbc.Util
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
| 1121 | createCommunicationsException in com.mysql.jdbc.SQLError
| 676 | readPacket . . . . . . . . . in com.mysql.jdbc.MysqlIO
| 1088 | doHandshake in ''
| 2493 | coreConnect . . . . . . . . . in com.mysql.jdbc.ConnectionImpl
| 2526 | connectOneTryOnly in ''
| 2311 | createNewIO . . . . . . . . . in ''
| 834 | <init> in ''
| 47 | <init> . . . . . . . . . . . in com.mysql.jdbc.JDBC4Connection
| 411 | handleNewInstance in com.mysql.jdbc.Util
| 416 | getInstance . . . . . . . . . in com.mysql.jdbc.ConnectionImpl
| 347 | connect in com.mysql.jdbc.NonRegisteringDriver
| 262 | run . . . . . . . . . . . . . in java.util.concurrent.FutureTask
| 1145 | runWorker in java.util.concurrent.ThreadPoolExecutor
| 615 | run . . . . . . . . . . . . . in java.util.concurrent.ThreadPoolExecutor$Worker
^ 745 | run in java.lang.Thread
Caused by EOFException: Can not read response from server. Expected to read 4 bytes, read 0 bytes before connection was unexpecte dly>
>->> 3166 | readFully in com.mysql.jdbc.MysqlIO>- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - >| 600 | readPacket in ''
| 1088 | doHandshake . . . . . . . . . in ''
| 2493 | coreConnect in com.mysql.jdbc.ConnectionImpl
| 2526 | connectOneTryOnly . . . . . . in ''
| 2311 | createNewIO in ''
| 834 | <init> . . . . . . . . . . . in ''
| 47 | <init> in com.mysql.jdbc.JDBC4Connection
| 411 | handleNewInstance . . . . . . in com.mysql.jdbc.Util
| 416 | getInstance in com.mysql.jdbc.ConnectionImpl
| 347 | connect . . . . . . . . . . . in com.mysql.jdbc.NonRegisteringDriver
| 262 | run in java.util.concurrent.FutureTask
| 1145 | runWorker . . . . . . . . . . in java.util.concurrent.ThreadPoolExecutor
| 615 | run in java.util.concurrent.ThreadPoolExecutor$Worker
^ 745 | run . . . . . . . . . . . . . in java.lang.Thread
| Error 2015-04-21 11:54:25,169 [localhost-startStop-1] ERROR context.GrailsContextLoader - Error initializing the application: Err>
>The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. >Message: Error creating bean with name 'transactionManagerPostProcessor': Initialization of bean failed; nested exception is org .spr
>The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. > Line | Method>->> 262 | run in java.util.concurrent.FutureTask
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
| 1145 | runWorker in java.util.concurrent.ThreadPoolExecutor
| 615 | run . . . in java.util.concurrent.ThreadPoolExecutor$Worker
^ 745 | run in java.lang.Thread
Caused by BeanCreationException: Error creating bean with name 'transactionManager': Cannot resolve reference to bean 'sessionFac tor>
>The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. >->> 262 | run in java.util.concurrent.FutureTask>- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
| 1145 | runWorker in java.util.concurrent.ThreadPoolExecutor
| 615 | run . . . in java.util.concurrent.ThreadPoolExecutor$Worker
^ 745 | run in java.lang.Thread
Caused by BeanCreationException: Error creating bean with name 'sessionFactory': Cannot resolve reference to bean 'lobHandlerDete cto>
>The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. >->> 262 | run in java.util.concurrent.FutureTask>- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
| 1145 | runWorker in java.util.concurrent.ThreadPoolExecutor
| 615 | run . . . in java.util.concurrent.ThreadPoolExecutor$Worker
^ 745 | run in java.lang.Thread
Caused by BeanCreationException: Error creating bean with name 'lobHandlerDetector': Invocation of init method failed; nested exc ept>
>The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. >->> 262 | run in java.util.concurrent.FutureTask>- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
| 1145 | runWorker in java.util.concurrent.ThreadPoolExecutor
| 615 | run . . . in java.util.concurrent.ThreadPoolExecutor$Worker
^ 745 | run in java.lang.Thread
Caused by MetaDataAccessException: Error while extracting DatabaseMetaData; nested exception is com.mysql.jdbc.exceptions.jdbc4.C omm>
>The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. >->> 262 | run in java.util.concurrent.FutureTask>- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
| 1145 | runWorker in java.util.concurrent.ThreadPoolExecutor
| 615 | run . . . in java.util.concurrent.ThreadPoolExecutor$Worker
^ 745 | run in java.lang.Thread
Caused by CommunicationsException: Communications link failure
The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
->> 411 | handleNewInstance in com.mysql.jdbc.Util
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
| 1121 | createCommunicationsException in com.mysql.jdbc.SQLError
| 676 | readPacket in com.mysql.jdbc.MysqlIO
| 1088 | doHandshake in ''
| 2493 | coreConnect in com.mysql.jdbc.ConnectionImpl
| 2526 | connectOneTryOnly in ''
| 2311 | createNewIO in ''
| 834 | <init> in ''
| 47 | <init> . in com.mysql.jdbc.JDBC4Connection
| 411 | handleNewInstance in com.mysql.jdbc.Util
| 416 | getInstance in com.mysql.jdbc.ConnectionImpl
| 347 | connect in com.mysql.jdbc.NonRegisteringDriver
| 262 | run . . . in java.util.concurrent.FutureTask
| 1145 | runWorker in java.util.concurrent.ThreadPoolExecutor
| 615 | run . . . in java.util.concurrent.ThreadPoolExecutor$Worker
^ 745 | run in java.lang.Thread
Caused by EOFException: Can not read response from server. Expected to read 4 bytes, read 0 bytes before connection was unexpecte dly>
>->> 3166 | readFully in com.mysql.jdbc.MysqlIO>- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
| 600 | readPacket in ''
| 1088 | doHandshake in ''
| 2493 | coreConnect in com.mysql.jdbc.ConnectionImpl
| 2526 | connectOneTryOnly in ''
| 2311 | createNewIO in ''
| 834 | <init> . in ''
| 47 | <init> in com.mysql.jdbc.JDBC4Connection
| 411 | handleNewInstance in com.mysql.jdbc.Util
| 416 | getInstance in com.mysql.jdbc.ConnectionImpl
| 347 | connect . in com.mysql.jdbc.NonRegisteringDriver
| 262 | run in java.util.concurrent.FutureTask
| 1145 | runWorker in java.util.concurrent.ThreadPoolExecutor
| 615 | run in java.util.concurrent.ThreadPoolExecutor$Worker
^ 745 | run . . . in java.lang.Thread
| Error Forked Grails VM exited with error
| Server running. Browse to http://localhost:8080/TestDebug
and my code is the following:
dataSource {
pooled = true
driverClassName = "org.h2.Driver"
username = "sa"
password = ""
}
hibernate {
cache.use_second_level_cache = true
cache.use_query_cache = false
cache.region.factory_class = 'net.sf.ehcache.hibernate.EhCacheRegionFactory' // Hibernate 3
// cache.region.factory_class = 'org.hibernate.cache.ehcache.EhCacheRegionFactory' // Hibernate 4
}
// environment specific settings
environments {
development {
dataSource {
dbCreate = "update"
url = "jdbc:mysql://localhost/nuage_v3"
driverClassName = "com.mysql.jdbc.Driver"
dialect = org.hibernate.dialect.MySQL5InnoDBDialect
username = "root"
password = "root"
}
}
test {
dataSource {
dbCreate = "update"
url = "jdbc:h2:mem:testDb;MVCC=TRUE;LOCK_TIMEOUT=10000;DB_CLOSE_ON_EXIT=FALSE"
}
}
production {
dataSource {
dbCreate = "update"
url = "jdbc:h2:prodDb;MVCC=TRUE;LOCK_TIMEOUT=10000;DB_CLOSE_ON_EXIT=FALSE"
properties {
maxActive = -1
minEvictableIdleTimeMillis=1800000
timeBetweenEvictionRunsMillis=1800000
numTestsPerEvictionRun=3
testOnBorrow=true
testWhileIdle=true
testOnReturn=false
validationQuery="SELECT 1"
jdbcInterceptors="ConnectionState"
}
}
}
}
The user and password are both correct, I tried reinstalling MySQL.

Answer 1

I've given up on trying to solve the problem.
I reinstalled grails and mysql on a diffenrent machine and it seems to work.
sorry to have bothered you all.
Thank you.

Answer 2

Problem is Mysql is not running.First run apache and Mysql then run grails app.Hope it will works .Also check 80 port is free or not if not then free your 80 port.

Answer 3

The same problem.. All of a sudden..
MySQLWorkbench works well, but grails "Unable to create initial connections of pool"
I've been spend half a day trying to fix this, searching answers. But nothing work for me..