And read this: http://docs.jboss.com/seam/1.1.7.RC1/reference/en/html/persistence.html View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4021702#4021702 Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&p=4021702