By the way, why do you want to place the persistence.xml in the META-INF of the EAR file? View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4139312#4139312 Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&p=4139312