Ejb3 is backward compatible, so would advice to write only new code in ejb3, and don't rewrite your ejb2 code but only when you really need. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4166814#4166814 Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&p=4166814