I have found the problem. i don't know how to resolve it. The JDK which i have installed is jdk1.0.5_11 In this rt.jar has 2 Portable object classes at 1.at com.sun.corba.se.impl.javax.rmi.PortableRemot eobject.narrow(PortableRemoteObject.java:229) 2.at javax.rmi.PortableRemoteObject.narrow(Portabl eRemoteObject.java:137) That is y when i copy the bean it was giving this exception. i need soln for this View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4037422#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...