Thanks for your answer. And where I can find org.jboss.ejb3.iiop.IORFactory.class? I have tried almost all of jboss libs but there is no such class... View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4033198#4033198 Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&p=4033198