I haven't got any reply to my previous message. Is it a bug in JBoss or openJPA? View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4131408#4131408 Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&p=4131408