Fix (APAR):  PM50738

Status:  Fix

Release:  6.1.1.4,6.1.1.3,6.1.1.2,6.1.1

Operating System:  AIX,HP-UX,Linux,Solaris,Windows

Supersedes Fixes:  PK99664;PM04611;PM05220;PM06349;PM07037;PM08969;PM11582;PM11623;PM12939;PM18326;PM22866;PM25095;PM30114;PM31735;PM31801;PM33050;PM33283;PM36464;PM44418;PM46463;PM47755;PM49326

CMVC Defect:  PM50738

Byte size of APAR:  520286

Date: 2012-01-20

Abstract:  Dmgr periodically consumes a large amount of resources that results in the process becoming temporarily unresponsive.

Description/symptom of problem:  
PM50738 resolves the following problem:

ERROR DESCRIPTION:?                                             

LOCAL FIX:?                                                     

PROBLEM SUMMARY:?

USERS AFFECTED:
 All users of WebSphere Virtual Enterprise.

PROBLEM DESCRIPTION:
Dmgr periodically consumes a large
amount of resources that results in
the
process becoming temporarily
unresponsive.

RECOMMENDATION:
None

During server start-up the XD Storage Service performs an
unscoped look-up of the XDStorage mbean. In large environments
these unscoped lookups can induce a significant amount of
stress on the dmgr that results in degraded dmgr
performance
that can last for several minutes.

PROBLEM CONCLUSION:?                                            
The XD Storage Service has been altered to properly scope       
lookups of the XDStorage mbean and staggering these             
requests during mass starts to avoid the stress this routine    
had previously caused on the dmgr.                              
                                                                
This fix will be included in the next available fix pack for    
WebSphere Virtual Enterprise.                                   


Directions to apply fix:  
Install Fix to:
__ Application Server Nodes
__ Deployment Manager Nodes
_X_ Both

NOTE:
The user must have Administrative rights in Windows, or be the Actual Root User in a UNIX environments. Also, you should be logged in with the same authority level when unpacking a fix, fix pack or refresh pack.

DOWNLOAD THE UPDATE INSTALLER TOOL IN ORDER TO INSTALL A FIX.
The Fix Installer can be downloaded from the following link:
http://www.ibm.com/support/docview.wss?rs=180&uid=swg21205991

The Update Installer for V5.0 does not have a maintenance directory. It uses fixpacks and fixes as the location of the unpacked files.

Customers must be at V6.1.0.17 or newer of the Update Installer.?This can be checked by reviewing the level of the Update Installer in file <was_root>/updateinstaller/version.txt.

1) Copy 6.1.1.0-WS-WXD-IFPM50738.pak file directly to the maintenance directory

2) Shutdown WebSphere
Manually execute setupCmdLine.bat in Windows or . ./setupCmdLine.sh in Unix from the WebSphere instance that maintenance is being applied to.

3) Launch Update Installer

4) Enter the installation location of the WebSphere product you want to update.

5) Select the "Install maintenance package" operation.

6) Enter the file name of the maintenance package to install (6.1.1.0-WS-WXD-IFPM50738.pak file which was copied in the maintenance directory).  The V5.0 and V5.1 fix packs and fixes are unpacked as .jar files and should be unpacked into fixpacks or fixes directory.

7) Install the maintenance package.

8) Restart WebSphere

Directions to remove fix:  
NOTE:  The user must have Administrative rights in Windows, or be the Actual Root User in a UNIX environments.

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
Manually execute setupCmdLine.bat in Windows or . ./setupCmdLine.sh in Unix from the WebSphere instance that uninstall is being run against.

2) Start Update Installer

3) Enter the installation location of the WebSphere product you want to remove the fix.

4) Select  "Uninstall maintenance package" operation.

5) Enter the file name of the maintenance package to uninstall (6.1.1.0-WS-WXD-IFPM50738.pak).

6) UnInstall maintenance package.

7) Restart WebSphere

Directions to re-apply fix:  
1) Shutdown WebSphere

2) Follow the Fix instructions to apply the fix.

3) Restart WebSphere

Additional Information: