Hi Ram, do you have any progress on that ? I would appreciate any input on this matter. I have exactly the same issue using JBoss 5.1.0 with Weblogic 9.2. Default configuration works just fine. It gives a CORBA.Initialize exception in cluster mode when calling Context ctx = new InitialContext(ht); I tried to change the properties.setProperty( Context.INITIAL_CONTEXT_FACTORY, "weblogic.jndi.WLInitialContextFactory" ); | properties.setProperty( Context.PROVIDER_URL, "t3://hostname:6131" ); with env.setProperty( Context.INITIAL_CONTEXT_FACTORY, "com.sun.jndi.cosnaming.CNCtxFactory" ); | env.setProperty( Context.PROVIDER_URL, "iiop://hostname:6131" ); It didn't help, same problem - "default" works fine, "all"/cluster throws an exception. View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4256811#... Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&a...