In addition to what Dimitris asked for - is this EJB3 or EJB 2.x? And please post the entire exception stacktrace. View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4259624#4259624 Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&p=4259624