Fixes are available
9.0.0.10: WebSphere Application Server traditional V9.0 Fix Pack 10
9.0.0.11: WebSphere Application Server traditional V9.0 Fix Pack 11
9.0.5.0: WebSphere Application Server traditional Version 9.0.5 Refresh Pack
9.0.5.1: WebSphere Application Server traditional Version 9.0.5 Fix Pack 1
9.0.5.2: WebSphere Application Server traditional Version 9.0.5 Fix Pack 2
9.0.5.3: WebSphere Application Server traditional Version 9.0.5 Fix Pack 3
APAR status
Closed as program error.
Error description
Add missing locking when changing outstanding request counters
Local fix
N/A
Problem summary
**************************************************************** * USERS AFFECTED: All users of IBM WebSphere Application * * Server WAS ND edition- Virtual * * Enterprise/IM Component * **************************************************************** * PROBLEM DESCRIPTION: Request load may not be correctly * * distributed across servers because * * outstanding request counts for those * * servers are incorrect * **************************************************************** * RECOMMENDATION: * **************************************************************** Distributing the request load requires determining how loaded the available machines are to send requests to a less loaded server. Since the counters for how many requests each server has been send are getting corrupted we make bad decisions and send traffic to servers that may not be the best choice to receive those requests.
Problem conclusion
Outstanding request counters were corrupted because multiple threads could update the counters simultaneously. This behavior has been corrected so that the counters have the correct values which leads to the expected routing decisions being made. The fix for this APAR is currently targeted for inclusion in fix pack 9.0.0.10. 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 number
PH02564
Reported component name
WEBS APP SERV N
Reported component ID
5724H8800
Reported release
900
Status
CLOSED PER
PE
NoPE
HIPER
NoHIPER
Special Attention
NoSpecatt / Xsystem
Submitted date
2018-09-10
Closed date
2018-10-04
Last modified date
2018-10-15
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
WEBS APP SERV N
Fixed component ID
5724H8800
Applicable component levels
R900 PSY
UP
[{"Business Unit":{"code":"BU059","label":"IBM Software w\/o TPS"},"Product":{"code":"SSEQTP","label":"WebSphere Application Server"},"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"9.0","Line of Business":{"code":"LOB45","label":"Automation"}}]
Document Information
Modified date:
02 November 2021