Lookup (2 Beans on diffrent applications)

Question

Hi
Programs: J-Developer902, Oracle9i AS
The Proplem : I have 2 beans on 2 different .ear applications, one bean on each .ear .
I'm trying to do Lookup from Bean 1 on the first application, to Bean 2
on the second application, without any success!!! What am I doing wrong?
The intialcontext I'm using is com.evermind.server.rmi.RMIInitialContextFactory
wich is the one to use when having 2 different applications (.EAR), which is my case.
Deployment : Bean 1 : myFirst.deploy, myFirst.jar, myFirst.ear
Bean 2 : mySecond.deploy, mySecond.jar, mySecond.ear
Here is how my Lookup looks like in my code.
_________ Clinet doing Lookup on Bean 1 ___________(It works without any problem)
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, "admin");
env.put(Context.PROVIDER_URL, "ormi://IS002/myFirst");
Context ctx = new InitialContext(env);
MyFirstEJBHome myFirstEJBHome = (MyFirstEJBHome)ctx.lookup("MyFirstEJB");
MyFirstEJB myFirstEJB;
__________ Bean 1 doning Lookup on Bean 2 _______________
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, "admin");
env.put(Context.PROVIDER_URL, "ormi://IS002/mySecond");
Context ctx = new InitialContext(env);
Object boundObject = ctx.lookup("MySecondEJB");
MySecondEJBHome mySecondEJBHome =
(MySecondEJBHome) PortableRemoteObject.narrow( boundObject, MySecondEJBHome.class);
________ ERROR _________
java.lang.ClassCastException
at com.sun.corba.se.internal.javax.rmi.PortableRemoteObject.narrow(Unknown Source)
at javax.rmi.PortableRemoteObject.narrow(Unknown Source)
at mypackage1.MyFirstEJBBean.callSecond(MyFirstEJBBean.java:47)
at MyFirstEJB_StatelessSessionBeanWrapper10.callSecond
(MyFirstEJB_StatelessSessionBeanWrapper10.java:79)
at java.lang.reflect.Method.invoke(Native Method)
at com.evermind.server.rmi.RMICallHandler.run(RMICallHandler.java:118)
at com.evermind.util.ThreadPoolThread.run(ThreadPoolThread.java:64)
What am I doing wrong??? Why can't my first Bean find the second Bean ?
I'll be thankful if somebody could help me!!
/Azam Roomi
Integration Strategies & Solutions

Answer 1

Azam,
You are hitting a classloader problem. I suggest you upgrade to
the latest JDeveloper version (9.0.3 -- available for download
from Oracle's "Technet" website). Then read the following:
http://otn.oracle.com/products/ias/tech_tips/oc4jTech_tip_0218.html
http://otn.oracle.com/docs/products/ias/doc_library/903doc_otn/generic.903/a97677/advanced.htm#1004903
http://kb.atlassian.com/content/atlassian/howto/classloaders.jsp
http://kb.atlassian.com/content/orion/docs/remote-access/remote-access.html
http://www2.theserverside.com/resources/article.jsp?l=AdvancedClassLoading
http://www2.theserverside.com/resources/article.jsp?l=ClassLoading
(Of-course, I'm assuming you haven't already read the above.)
Hope this helps you.
Good Luck,
Avi.