|
Problem IC87425
|
Status: Closed |
POSSIBLE HIGH CPU USAGE OF FUNCTION STMMPCFINDSIMVAR UNDER VERY HIGH WORKLOAD |
| product: |
DB2 FOR LUW / DB2FORLUW / 970 - DB2 |
| Problem description: |
Under specific very high workload situations, function
stmmPCfindSimVar can consume a large amount of CPU time.
Configuration settings to trigger this behavior:
* STMM enabled or disabled
* PCKCACHESZ set to AUTOMATIC
This APAR will help to reduce CPU usage of function
stmmPCfindSimVar. |
| Problem Summary: |
****************************************************************
* USERS AFFECTED: *
* ALL *
****************************************************************
* PROBLEM DESCRIPTION: *
* See Error Description *
****************************************************************
* RECOMMENDATION: *
* Upgrade to DB2 Version 9.7 Fix Pack 8. *
**************************************************************** |
| Local Fix: |
* Set PCKCACHESZ to a fixed value
* Make similar SQL statements look different by adding comments
to the statment text at the end |
| available fix packs: |
DB2 Version 9.7 Fix Pack 8 for Linux, UNIX, and Windows
DB2 Version 9.7 Fix Pack 9 for Linux, UNIX, and Windows
DB2 Version 9.7 Fix Pack 9a for Linux, UNIX, and Windows
DB2 Version 9.7 Fix Pack 10 for Linux, UNIX, and Windows
|
| Solution |
First fixed in DB2 Version 9.7 Fix Pack 8. |
| Workaround |
not known / see Local fix |
| BUG-Tracking |
forerunner : APAR is sysrouted TO one or more of the following: IC91295
follow-up : |
| Timestamps |
Date - problem reported :
Date - problem closed :
Date - last modified :
| 23.10.2012
01.07.2013
01.07.2013 |
| Problem solved at the following versions (IBM BugInfos) |
9.7.FP8
|
| Problem solved according to the fixlist(s) of the following version(s) |
| 9.7.0.8
|
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