WebSphere® Application Server has a restriction that all Java™ applications that use the WebSphere client to connect to enterprise beans running on a WebSphere server must use the same level of the IBM® Java ORB that was used to build the WebSphere client.
java.lang.NoClassDefFoundError: com/ibm/rmi/iiop/GIOPVersionExceptionTo ensure that the correct ORB level is used, you can do one of the following: