ClassCastException while using session bean in OC4J

Question

I am facing the same problem while deploying a stateless session bean in Oracle 9i AS 1.0.2.2.1. The details are given below.
The following code snippet is used in the client to prepare for the lookup:
Hashtable env = new Hashtable();
env.put(Context.INITIAL_CONTEXT_FACTORY, "com.evermind.server.rmi.RMIInitialContextFactory");
env.put(Context.SECURITY_PRINCIPAL, "admin");
env.put(Context.SECURITY_CREDENTIALS, "welcome");
//the following line can also have the actual machine name instead of "localhost"
env.put(Context.PROVIDER_URL, "ormi://localhost:23893/myejbs");
Context ctx = new InitialContext(env);
System.out.println("Getting Home....");
Object obj=ctx.lookup("Grouping");
System.out.println("Home Object Is : "+obj);
GroupingHome groupingHome = (GroupingHome)obj;
System.out.println("Got Home");
Grouping grouping = groupingHome.create( );
graphs=grouping.<mehtods>();
I've edited the config/server.xml file to have the following line:
<application name="myejbs" path="C:\oracle\ora102\j2ee\home\applications\classes\myejbs" auto-start="true" />
which points to the directory where the class files reside
I've also change the port in the config/rmi.xml file to 23893.
Now... the problem that I am facing is - while I am running a client from outside the server JVM i.e standalone client... which uses the Grouping interfaces, it works fine. giving me the desired result. But the moment I place the code in a service client deployed in the server or a jsp, I get a ClassCastException for GroupingHome whereas the SOP that I have given after lookup shows that I have found - "Grouping EJBHome". The funny thisng is that bith the working client and the JSP are using sme set of interface class files - Grouping.class (Remote) and GroupingHome.class.
Where am I going wrong?? If anybody knows, or Giri has found an answer to his query... please post a reply.
Thanks.
PS: I've tried new InitialContext(); solution but it didn't work. I have also narrowed the home object with javax.rmi.PortableRemoteObject.narrow(obj,GroupingHome.class) but to no avail :(.

Answer 1

Hi Gauarv,
Did you not see my reply in the following post?
Re: 502 service temporarily unavailable
If I'm not mistaken, this is exactly the same question as you asked
there.
By the way, is there some reason you are still using OC4J version
1.0.2.2? Is there something stopping you from upgrading to the later
versions (9.0.2 and 9.0.3)?
Good Luck,
Avi.