As far as i remember, the persistence units in different EARs are not accessible from the other EAR. View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4228340#4228340 Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&p=4228340