Hi Christian, thanks for you help. That seems to be the reason. I introduced another session bean and now its working! View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4043179#4043179 Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&p=4043179