My environment: JBoss 5.1.0GA, JDK 1.5.0_12(Linux)
Client side environment: JDK1.5.0_12(Windows),Eclipse

I want to connect to an EJB remotely through IIOP, the following is the details:
1. in jboss.xml, I have added the iiop item in it
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<?xml version="1.0"?>

<enterprise-beans>

<ejb-name>OTSEjb2StatelessBean</ejb-name>
<jndi-name>OTSEjb2StatelessBean</jndi-name>
<invoker-bindings>

<invoker-proxy-binding-name>iiop</invoker-proxy-binding-name>

</invoker-bindings>


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2. The client side program is like the following:
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Properties prop = new Properties();
prop.setProperty(Context.INITIAL_CONTEXT_FACTORY,"org.jboss.iiop.naming.ORBInitialContextFactory"); prop.setProperty(Context.PROVIDER_URL,"iiop://10.10.135.212:3528");

try {
Context ctx = new InitialContext(prop);
Object obj = ctx.lookup("corbaname:iiop:10.10.135.212:3528#OTSEjb2StatelessBean");
System.out.println(obj.getClass());

if(obj instanceof MyHome){
System.out.println("OK");
}
else{
System.out.println("The classloader of Obj:" + obj.getClass().getClassLoader());
System.out.println("The classloader of MyHome:" + MyHome.class.getClassLoader());
}

MyHome home = (MyHome)PortableRemoteObject.narrow(obj,MyHome.class);
System.out.println(home);
MyRemote remote = home.create();
System.out.println(remote.foo("","",false,args));
}
......
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3. I have added all of the jars in the $JBOSS_HOME/client and /common in the client side classpath.

But the result is strange.
I find obj can be found from the jboss, but the result of PortableRemoteObject.narrow() is null, and I find the instance type of obj is "com.sun.corba.se.impl.corba.CORBAObjectImpl", the following is the details:
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class com.sun.corba.se.impl.corba.CORBAObjectImpl
The classloader of Obj:null
The classloader of MyHome:sun.misc.Launcher$AppClassLoader@133056f
null
Exception in thread "main" java.lang.NullPointerException
at iets.com.RemoteEJBConnTest.testIIOP(RemoteEJBConnTest.java:90)
at iets.com.RemoteEJBConnTest.main(RemoteEJBConnTest.java:121)

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I have struggled about 1 day, but no any progress, any idea about it? Thanks a lot.