Fix (APAR):  PQ86588

Status:  Fix

Release:  5.0.2

Operating System:  All

Supersedes Fixes: PQ85782 

CMVC Defect:  sov 68352

Byte size of APAR:  632,126

Date: 2004-03-24

Prerequisites: This fix can only be applied on WebSphere Application 
Server 5.0.2. Furthermore, on platforms where IBM delivers an SDK 
(Windows, AIX, and Linux) SDK 1.3.1 SR6 is a prerequisite. On HP-UX and
Sun platforms, there is no dependency on the Service Release level of the SDK. 

Abstract:  fix ClassCastException on EJB re-start and "The delegate has not been set." error

Description/symptom of problem:  
This APAR addresses the problem where stopping and starting an EJB multiple times makes it 
inaccessible to other EJBs, servlets or JSPs running in the same appserver.  Typically, 
attempts to access it will fail with a ClassCastException.

It also fixes the problem where the appserver reports, "The delegate has not been set."  
A stub for an object in the same appserver is looked up from Naming and cached, then the 
cache is flushed and subsequent lookups cache new stubs in Naming.  The failure occurs when 
the cache misses (and the stub is re-created) for the third time.

Additional Information:  This is a one-off patch and will conflict with any other patches 
that update ibmorb.jar.  This fix can be identified by examining the ORB version string (reported 
in WebSphere trace) which should contain "orbsol131-20031017 (+sov68352)". This fix can only
be applied on WebSphere Application Server 5.0.2. Furthermore, on platforms where IBM delivers 
an SDK (Windows, AIX, and Linux) SDK 1.3.1 SR6 is a prerequisite. On HP-UX and Sun platforms, 
there is no dependency on the Service Release level of the SDK. 


Directions to apply fix:  

NOTE:  YOU MUST FIRST DOWNLOAD THE UPDATE INSTALLER TOOL IN ORDER TO INSTALL A FIX.
       The Fix Installer can be downloaded from the following link:
       http://www-3.ibm.com/software/webservers/appserv/support/index.html

1) Create temporary "fix" directory to store the jar file:
             UNIX: /tmp/WebSphere/fix
          Windows: c:\temp\WebSphere\fix

2) Copy jar file to the directory

3) Shutdown WebSphere

4) Follow the Fix installation instructions that are packaged with the Fix Installer on how to install the Fix.

5) Restart WebSphere

6) The temp directory may be removed.


Directions to remove fix:  NOTE:  FIXES MUST BE REMOVED IN THE ORDER THEY WERE APPLIED.  DO NOT REMOVE A FIX UNLESS
     ALL FIXES APPLIED AFTER IT HAVE FIRST BEEN REMOVED.  YOU MAY REAPPLY ANY REMOVED FIX.

Example:  If your system has fix1, fix2, and fix3 applied in that order and fix2 is to be
          removed, fix3 must be removed first, fix2 removed, and fix3 re-applied.


1) Shutdown WebSphere

2) Follow the instructions that are packaged with the Fix Installer on how to uninstall the Fix.

3) Restart WebSphere

Directions to re-apply fix:  1) Shutdown WebSphere

2) Follow the Fix instructions that are packaged with the Fix Installer on how to uninstall and reinstall the Fix.

3) Restart WebSphere