I figure out the problem, I pack my project with Maven2 and one of the dependencies was the persistence-api jar that jar was packed in my ear and it collide with the one already in Jboss lib so i guess that was my problem... any way i have removed the dependency (made it provided in Maven) and now it is working. Thanks any way cheers View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=3991879#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...