"July Pyrra" wrote : As I said, I'm working with EJB3 so it shouldn't have to deal with the persistence.xml or hibernate.cfg.xml | That's not entirely true. You dont have to deal with hibernate.cfg.xml but you do have to be aware of the persistence.xml (which is a JPA configuration file and part of EJB3). Is the Account.class and the persistence.xml, part of the same jar file? "jaikiran" wrote : | Also post the logs that you see on the console when your application is being deployed. | View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4153656#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...