Fix (APAR):  PQ92289

Status:  Fix

Release:  5.0.2.7,5.0.2.6,5.0.2.5,5.0.2.4,5.0.2.3,5.0.2.2,5.0.2.1,5.0.2,5.0.1,5.0.0

Operating System:  All

Supersedes Fixes:  

CMVC Defect:  PQ92289

Byte size of APAR:  7466

Date: 2004-08-04

Abstract:  WorkArea Service causes a java.lang.ArrayIndexOutOfBoundsException

Description/symptom of problem:  The WorkArea Service causes a java.lang.ArrayIndexOutOfBoundsException whenever an application calls many J2EE components in a row (e.g. servlet chaining).  For example, if an application calls an EJB which in turn calls another EJB which in turn calls another EJB, and on and on, at a certain point the array the WorkArea services uses to store this call path information may reach the array bounds.  Normally WorkArea would increment the array bounds once the maximum bound is reached.  However, if the depth of the call chain ends at exactly the array bounds, a problem in the WorkArea code doesn't allow for the array bounds checking, thus causing a java.lang.ArrayIndexOutOfBoundsException as the call chain returns.  Although this scenario is tough to reach it isn't entirely impossible either.

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

Additional Information: