A fix is available
APAR status
Closed as program error.
Error description
Various data inconsistencies ABEND 04E 00C90101 00C90102 00C90105 or 00C902xx type abends due to page regression as pages were not CASTOUT. Also, after fallback to V9, data inconsistencies were found and ABEND04E in DSNIONX2 ERQUAL5005 type dumps seen. A subsequent review of the DB2 V10 archive logs showed objects that were GBP-dep in V10 had pages not CASTOUT before they became non-GBP-dep. The Customer then did a fallback to V9, where the DSNIONX2 5005 abends were seen with broken objects found - missing data.
Local fix
Problem summary
**************************************************************** * USERS AFFECTED: DB2 data sharing users. * **************************************************************** * PROBLEM DESCRIPTION: Page regression and corrupted data * * may cause * * - Incorrect output, INCORROUT. * * - ABEND04E RC00C90101, RC00C90102, * * RC00C90105, or RC00C902xx in * * various CSECTS. * * - Data/index inconsistencies reported * * by the CHECK INDEX utility. * * - Page regression reported by the * * DSN1LOGP utility. * **************************************************************** * RECOMMENDATION: * **************************************************************** A new restart token algorithm may produce an incomplete list of pages cached in a group buffer pool (GBP). The castout procedure using this list may fail to write out all updated pages in a GBP. If those pages are purged after castout, the updates will be lost.
Problem conclusion
The castout logic has been modified to not use the new restart token algorithm.
Temporary fix
********* * HIPER * *********
Comments
APAR Information
APAR number
PM51655
Reported component name
DB2 OS/390 & Z/
Reported component ID
5740XYR00
Reported release
A10
Status
CLOSED PER
PE
NoPE
HIPER
YesHIPER
Special Attention
NoSpecatt
Submitted date
2011-11-06
Closed date
2011-11-15
Last modified date
2011-12-09
APAR is sysrouted FROM one or more of the following:
APAR is sysrouted TO one or more of the following:
UK73864
Modules/Macros
DSNB5BPL
Fix information
Fixed component name
DB2 OS/390 & Z/
Fixed component ID
5740XYR00
Applicable component levels
RA10 PSY UK73864
UP11/11/30 P F111
Fix is available
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Document Information
Modified date:
09 December 2011