Hi, Do anyone have time to sort this out once and for all? I know this has been discussed several times, but different websites and forums have different answers. I'm getting the following error when deploying a small ejb3 project: | --- MBEANS THAT ARE THE ROOT CAUSE OF THE PROBLEM --- | ObjectName: persistence.units:unitName=tinyphotoalbum | State: NOTYETINSTALLED | Depends On Me: | jboss.j2ee:jar=ImageServices.jar,name=ImageDetailManagementBean,service=EJB3 | The jarfile/META-INF/persistance.xml looks like: <?xml version="1.0" encoding="UTF-8" ?> | <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_1_0.xsd" | version="1.0" xmlns="http://java.sun.com/xml/ns/persistence"> | | <persistence-unit name="tinyphotoalbum"> | <jta-data-source>java:/MySqlDS</jta-data-source> | <class>se.hexabit.tinyphotoalbum.beans.ImageDetails</class> | <properties> | <property name="hibernate.archive.autodetection" value="class, hbm"/> | <property name="hibernate.show_sql" value="true"/> | <property name="hibernate.connection.driver_class" value="com.mysql.jdbc.Driver"/> | <property name="hibernate.connection.password" value="tinyphotoalbum"/> | <property name="hibernate.connection.url" value="jdbc:mysql://192.168.0.138:3306/TinyPhotoAlbum"/> | <property name="hibernate.connection.username" value="tinyphotoalbum"/> | <property name="hibernate.dialect" value="org.hibernate.dialect.MySQLDialect"/> | </properties> | </persistence-unit> | </persistence> | And the JBOSS_HOME\server\default\deploy\mysql-ds.xml: | <?xml version="1.0" encoding="UTF-8"?> | <datasources> | <local-tx-datasource> | <jndi-name>MySqlDS</jndi-name> | <connection-url>jdbc:mysql://192.168.0.138:3306/TinyPhotoAlbum</connection-url> | <driver-class>com.mysql.jdbc.Driver</driver-class> | <user-name>tinyphotoalbum</user-name> | <password>tinyphotoalbum</password> | <exception-sorter-class-name>org.jboss.resource.adapter.jdbc.vendor.MySQLExceptionSorter</exception-sorter-class-name> | <!-- corresponding type-mapping in the standardjbosscmp-jdbc.xml --> | <metadata> | <type-mapping>mySQL</type-mapping> | </metadata> | </local-tx-datasource> | </datasources> | Finnally i placed the driver in the lib-dir as: JBOSS_HOME\server\default\lib\mysql-connector-java-5.1.6-bin.jar Is there any more configuration that needs to be done? BR, Mattias View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4144656#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...