It looks like there may be an issue with JBoss 4.0.5 when defining a persistence unit that maps on to a ConnectionFactoryBinding service instead of the DataSourceBinding service. I found a jira issue raised that points to the same problem : http://jira.jboss.com/jira/browse/JBPORTAL-613 Here is the jboss error : | | --- MBeans waiting for other MBeans --- | ObjectName: persistence.units:jar=Mobile2Date.jar,unitName=Mobile2Date | State: NOTYETINSTALLED | I Depend On: | jboss.jca:name=Mobile2DateDS,service=DataSourceBinding | Depends On Me: | jboss.j2ee:jar=Mobile2Date.jar,name=PersonManagerBean,service=EJB3 | jboss.j2ee:jar=Mobile2Date.jar,name=SetupBean,service=EJB3 | | You can see that it says it depends on : jboss.jca:name=Mobile2DateDS,service=DataSourceBinding which is odd because I have not defined my database as a DataSource, it is defined as a ConnectionFactory so it can't find it because it is looking up on the wrong service. It should be depending on : jboss.jca:name=Mobile2DateDS,service=ConnectionFactoryBinding because I am using a JCA Resource Adapter If anyone can help I will be very grateful View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4008425#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...