persistence exception on database connection using glassfish - mysql

Question

I'm new to glass-fish & persistence and while trying to run a query on MySQL database in my machine i get the following error:
Exception [EclipseLink-4002] (Eclipse Persistence Services - 2.3.2.v20111125-r10461): org.eclipse.persistence.exceptions.DatabaseException
Internal Exception: java.sql.SQLException: No database selected
Error Code: 1046
before running the server i made sure that the server configuration are done using this guide : mysql site manual for using connector with glassfish, and configured my persistence.xml like this:
<persistence version="2.0" 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">
<persistence-unit name="StudentRecipieWebsite" transaction-type="RESOURCE_LOCAL">
<non-jta-data-source>jdbc/mySql</non-jta-data-source>
<class>il.musehunter.studentRecipes.dbModel.Image</class>
<class>il.musehunter.studentRecipes.dbModel.Ingrediant</class>
<class>il.musehunter.studentRecipes.dbModel.Recipe</class>
<class>il.musehunter.studentRecipes.dbModel.User</class>
<properties>
<property name="javax.persistence.jdbc.url" value="jdbc:mysql://localhost:3306/recipes_data"/>
<property name="javax.persistence.jdbc.user" value="root"/>
<property name="javax.persistence.jdbc.password" value="moshe1475"/>
<property name="javax.persistence.jdbc.driver" value="com.mysql.jdbc.Driver"/>
<property name="eclipselink.jdbc.batch-writing" value="JDBC"/>
</properties>
</persistence-unit>
I'm really new to this and does not have a clue to what i should do next so any help would be very appreciated.
edit:
adding part of the domain.xml from my glassfish server :
<applications>
<application context-root="/StudentRecipieWebsite" location="${com.sun.aas.instanceRootURI}/applications/StudentRecipieWebsite/" name="StudentRecipieWebsite" object-type="user">
<property name="appLocation" value="${com.sun.aas.instanceRootURI}/applications/__internal/StudentRecipieWebsite/StudentRecipieWebsite.war"></property>
<property name="org.glassfish.ejb.container.application_unique_id" value="89812698949156864"></property>
<property name="org.glassfish.persistence.app_name_property" value="StudentRecipieWebsite"></property>
<property name="defaultAppName" value="StudentRecipieWebsite"></property>
<module name="StudentRecipieWebsite">
<engine sniffer="ejb"></engine>
<engine sniffer="security"></engine>
<engine sniffer="jpa"></engine>
<engine sniffer="web"></engine>
</module>
</application>
and:
<resources>
<jdbc-resource pool-name="__TimerPool" jndi-name="jdbc/__TimerPool" object-type="system-admin"></jdbc-resource>
<jdbc-resource pool-name="DerbyPool" jndi-name="jdbc/__default"></jdbc-resource>
<jdbc-connection-pool datasource-classname="org.apache.derby.jdbc.EmbeddedXADataSource" res-type="javax.sql.XADataSource" name="__TimerPool">
<property name="databaseName" value="${com.sun.aas.instanceRoot}/lib/databases/ejbtimer"></property>
<property name="connectionAttributes" value=";create=true"></property>
</jdbc-connection-pool>
<jdbc-connection-pool is-isolation-level-guaranteed="false" datasource-classname="org.apache.derby.jdbc.ClientDataSource" res-type="javax.sql.DataSource" name="DerbyPool">
<property name="PortNumber" value="1527"></property>
<property name="Password" value="APP"></property>
<property name="User" value="APP"></property>
<property name="serverName" value="localhost"></property>
<property name="DatabaseName" value="sun-appserv-samples"></property>
<property name="connectionAttributes" value=";create=true"></property>
</jdbc-connection-pool>
<jdbc-connection-pool datasource-classname="com.mysql.jdbc.jdbc2.optional.MysqlDataSource" res-type="javax.sql.DataSource" name="MySQLConnPool">
<property name="portNumber" value="3306"></property>
<property name="databaseName" value="recipes_data"></property>
<property name="serverName" value="localhost"></property>
<property name="user" value="root"></property>
<property name="password" value="moshe1475"></property>
<property name="URL" value="jdbc:mysql://:3306/"></property>
</jdbc-connection-pool>
<jdbc-resource pool-name="MySQLConnPool" description="" jndi-name="jdbc/mySql"></jdbc-resource></resources>

Answer 1

My first guess is that the connection URL in the data source definition is not quite right because "No database selected Error Code: 1046" is a MySQL error.
You do not need to configure the data source in persistence.xml if you have already defined a data source in your application server (which is the common way). Can you post the data source definition from your $GLASSFISH_HOME/glassfish/domains/$GLASSFISH_DOMAIN/config/domain.xml?
This is an example persistence.xml I took from an project of mine (more or less from the Netbeans template) that might help you:
<?xml version="1.0" encoding="UTF-8"?>
<persistence version="2.0" 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">
<persistence-unit name="MyPU" transaction-type="JTA">
<provider>org.eclipse.persistence.jpa.PersistenceProvider</provider>
<jta-data-source>jdbc/sample</jta-data-source>
<exclude-unlisted-classes>false</exclude-unlisted-classes>
<properties>
<property name="eclipselink.ddl-generation" value="create-tables"/>
</properties>
</persistence-unit>
</persistence>
Good luck!
Answering to the comment:
You need to add the database name to the URL:
<property name="URL" value="jdbc:mysql://nameOrIPOfYourServerOrLocalhost:3306/nameOfYourDatabase"></property>
That should resolve the problem.