Try: @PersistenceContext(unitName = "PrototypeCRMSystem-ejbPU") | private EntityManager em; View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4199072#4199072 Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&p=4199072