Thanks Xiaopang, I will try it It's near 4 months since I've started EJB3 View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4136999#4136999 Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&p=4136999