PM42282: MAKE PORTABLEREMOTEOBJECTDELEGATE SENSITIVE TO INTRA-JVM CLASSLOADERS

8.0.0.2: WebSphere Application Server V8.0 Fix Pack 2
8.0.0.3: WebSphere Application Server V8.0 Fix Pack 3
8.0.0.4: WebSphere Application Server V8.0 Fix Pack 4
8.0.0.5: WebSphere Application Server V8.0 Fix Pack 5
8.0.0.6: WebSphere Application Server V8.0 Fix Pack 6
8.0.0.7: WebSphere Application Server V8.0 Fix Pack 7
8.0.0.8: WebSphere Application Server V8.0 Fix Pack 8
8.0.0.9: WebSphere Application Server V8.0 Fix Pack 9
8.0.0.10: WebSphere Application Server V8.0 Fix Pack 10
8.0.0.11: WebSphere Application Server V8.0 Fix Pack 11
8.0.0.12: WebSphere Application Server V8.0 Fix Pack 12
8.0.0.13: WebSphere Application Server V8.0 Fix Pack 13
8.0.0.14: WebSphere Application Server V8.0 Fix Pack 14
8.0.0.15: WebSphere Application Server V8.0 Fix Pack 15

APAR status

• Closed as program error.

Error description

• When we access the remote interface of an EJB
  from a second EAR, we get a ClassCastException.
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED:  All users of IBM WebSphere Application      *
  *                  Server V8.0                                 *
  ****************************************************************
  * PROBLEM DESCRIPTION: WebSphere Application Server for        *
  *                      z/OS issues a                           *
  *                      java.lang.ClassCastException            *
  *                      when an Application tries to load       *
  *                      the emote interface of an EJB           *
  *                      from a different Application.           *
  ****************************************************************
                                                                 *
  ****************************************************************
  When the lookup is done to get the remote interface of the
  bean, the PortableRemoteObject class passes a null value for
  the stub class to the wrapper class loader which returned a
  cached servant stub instead of the client stub. This caused
  the Servant Region of WebSphere Application Server on z/OS
  to issue a java.lang.ClassCastException.
  Example of the exception.
  'java.lang.ClassCastException:com.ibm.test._TestSessionRemote
  Stub incompatible with com.ibm.test.TestSessionRemote'
  

Problem conclusion

• Code was updated to use context classloader to load the stub
  class.
  
  APAR PM42282 is currently targeted for inclusion in
  Service Level (8.0.0.2)  of WebSphere
  Application Server.
  
  Please refer to the Recommended Updates page for delivery
  information:
  http://www.ibm.com/support/docview.wss?rs=180&uid=swg27004980
  

Temporary fix

Comments

APAR Information

• APAR is sysrouted FROM one or more of the following:

• APAR is sysrouted TO one or more of the following:

Fix information

• Fixed component name

  WEBSPHERE FOR Z

• Fixed component ID

  5655I3500

Applicable component levels

• R800 PSY

     UP