"jwenting" wrote : you are confusing 2 use cases. | | When deploying your exploded jars you're effectively deploying 2 enterprise applications. | Those don't share resources, including persistence units. | | I think i did not put this clearly. Sorry about that. When i say i am deploying the jars in exploded format, the jars are *inside the exploded EAR* file (as can be seen the original packaging hierarchy that i posted) and hence are part of the same application represented by my EJB3Persistence.ear. They are not deployed separately. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4140087#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...