The forum seems to have eaten my response, so I'll try again: You need to use @In to inject the SMPC, not @PersistenceContext. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4018074#4018074 Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&p=4018074