Oops, the em.beginTransaction() should not be there in the code block above (why can't I edit my posts?) View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4036998#4036998 Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&p=4036998