Thanks, I've posted on hibernate forum now http://forum.hibernate.org/viewtopic.php?t=973726 View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4040315#4040315 Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&p=4040315