|
Problem IC81831
|
Status: Closed |
DB2 PAGE CLEANERS MAY RECEIVE SIG 11 WHEN 'DB2_USE_ALTERNATE_PAG E_CLEANING=ON' AND 'SET WRITE SUSPEND/RESUME' IS USED |
| product: |
DB2 FOR LUW / DB2FORLUW / 970 - DB2 |
| Problem description: |
While the cleaner was handling the pages list, a 'set write
suspend' came in and prevented pages to be written.
This sent the cleaner into sleep. When it resumes after a 'set
write resume' has been issued, it assumes the current list can
only be a dirty list.
Such that the page cleaner will trap with invalid pointer
access.
The trap file would show a stack trace similar to the one below
.sqlbClnrCheckAndPause.fdpr.clone.1805__FP12SQLB_CLNR_CBPb +
0x2B8
sqlbClnrEntryPoint__FP12sqbPgClnrEdu + 0xD28
sqlbClnrEntryPoint__FP12sqbPgClnrEdu + 0x24
RunEDU__12sqbPgClnrEduFv + 0x34
__9sqzEDUObjFv + 0x1F0
sqloEDUEntry + 0x260
It might vary because of the way the compiler generated the
code. The real stack, however, should be the following (only
showing the top part):
sqlbClnrCheckAndPause()
sqlbClnrFindWork()
sqlbClnrEntryPoint()
sqbPgClnrEdu::RunEDU() |
| Problem Summary: |
****************************************************************
* USERS AFFECTED: *
* all platforms *
****************************************************************
* PROBLEM DESCRIPTION: *
* See Error Description *
****************************************************************
* RECOMMENDATION: *
* upgrade to db2 v97fp6 *
**************************************************************** |
| Local Fix: |
Disabling APC (setting DB2_USE_ALTERNATE_PAGE_CLEANING to NO) |
| available fix packs: |
DB2 Version 9.7 Fix Pack 6 for Linux, UNIX, and Windows
DB2 Version 9.7 Fix Pack 7 for Linux, UNIX, and Windows
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 |
The problem was first fixed in DB2 LUW Version 9.7 Fix Pack 6 |
| Workaround |
not known / see Local fix |
| BUG-Tracking |
forerunner : APAR is sysrouted TO one or more of the following: IV16771 IC84499
follow-up : |
| Timestamps |
Date - problem reported :
Date - problem closed :
Date - last modified :
| 05.03.2012
22.05.2012
22.05.2012 |
| Problem solved at the following versions (IBM BugInfos) |
9.7.FP6
|
| Problem solved according to the fixlist(s) of the following version(s) |
| 9.7.0.6
|
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