Fix (APAR):                IZ80885

Status:                    Fix

Product:                   WBI

Release:                   7.0.0.2

Operating System:          All operating systems

Supersedes Fixes:          

Pre-requisite Fixes:       

Exclusive-requisite Fixes: 

CMVC Defect:               IZ80885

Byte size of APAR:         49646

Date:                      2010-08-18

Abstract:                  Recovery thread for WorkManager based navigation may duplicate messages when falling back to JMS based navigation.

Description/symptom of problem:

The recovery thread for WorkManager based navigation may duplicate messages when falling back to JMS based navigation.
Under high system load the recovery thread may repeatedly send the same message to the BPE Internal Queue. These duplicated 
messages are recognized later on and will be automatically discarded. Yet this behavior may lead to a high message count on the 
BPE Internal Queue and consequently to a system slow down. This fix addresses this issue and avoids the message duplication.

NOTE: IBM Installation Manager is required to install this interim fix (recommended 1.4.1 or later). For further details see:
      http://publib.boulder.ibm.com/infocenter/dmndhelp/v7r0mx/index.jsp?topic=/com.ibm.websphere.wps.doc/doc/tins_updating.html.
      
NOTE: This interim fix is applicable to a full WPS installation.

Directions to apply fix:

1. Shutdown WebSphere. It is important that you perform a controlled and complete shutdown of the server to ensure
   that all transactions have completed, before installing the fix.

2. Extract the .zip file to a directory. For example, extract to C:\temp.

3. Add the fix pack repository location in IBM Installation Manager:
a. Start IBM Installation Manager.
b. In Installation Manager, click File > Preferences > Repositories.
c. Click Add Repository.
d. Browse to or enter the file path to the repository.config file. The repository.config file is located in the directory where you extracted the compressed files. For example, enter C:\temp\repository.config, and then click OK.

4. On the main page of the Installation Manager, click Update.

5. Restart WebSphere


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, then fix2 may be removed

1. Shutdown WebSphere. It is important that you perform a controlled and complete shutdown of the server to ensure
   that all transactions have completed, before installing the fix.
 
2. Start IBM Installation Manager.
3. On the main page of the Installation Manager, click Unistall.
4. Select the package to uninstall and follow the prompts on screen.

5. Restart WebSphere


Directions to re-apply fix: 

1. Shutdown WebSphere. It is important that you perform a controlled and complete shutdown of the server to ensure
   that all transactions have completed, before installing the fix.

2. Extract the .zip file to a directory. For example, extract to C:\temp.

3. Add the fix pack repository location in IBM Installation Manager:
a. Start IBM Installation Manager.
b. In Installation Manager, click File > Preferences > Repositories.
c. Click Add Repository.
d. Browse to or enter the file path to the repository.config file. The repository.config file is located in the directory where you extracted the compressed files. For example, enter C:\temp\repository.config, and then click OK.

4. On the main page of the Installation Manager, click Update.

5. Restart WebSphere.



Additional Information: