A fix is available
APAR status
Closed as program error.
Error description
Dump Title: D01B ABND 04E 00E20029 U=SYSOPR M=C9 C=101.SMC DSNSFSTG M=DSNTFRCV LOC=DSNIDBEL DSNSVBK OFFSET1B5C DBET notify exit issued ABEND04E RC00E20029 and caused DB2 down by RC00E50702 - 00E50702 ABEND04E RC00E20029 happened when DSNIDBEL tried to free a DBET block because the block had been already freed. Additional symptoms: ABEND04E RC00C90101 00C90101 DSNIDBGC ERQUAL 501A ERQUAL501A MSGDSNV086E DSNV086E 00E50702 RC00E50702
Local fix
Problem summary
**************************************************************** * USERS AFFECTED: * * All V11 and V12 users of Db2 for z/OS * * data sharing are affected. * **************************************************************** * PROBLEM DESCRIPTION: * * ABEND04E RC00E20029 DSNIDBEL DSNSVBK * * OFFSET1B5C may occur when DBET * * incorrectly frees storage that has * * been freed previously. * * * * There can be missing DBET states * * when 2 transactions change the same * * object at the same time. * **************************************************************** * RECOMMENDATION: * * Apply corrective PTF when available. * **************************************************************** In very rare situations in data sharing groups, DBET states are not merged correctly due to concurrency issues. This might lead to corrupted DBET information.
Problem conclusion
The timing window has been fixed to prevent this corruption. Reason code 00C900C0 may now be written from more DBET modules when an internal lock is not granted. The addition of the database name and tablespace name (or if not available, the DBID.PSID) will be written as part of the resource name to aid in problem analysis. In the Codes manual (V11 GC19-4053, and V12 GC27-8847-00), under Appendix F. Resource types, the descriptions for resource 2104 and 2105 are reversed. The following change will be made: 00002104 Logical partition DBET entry DB.SP.PT 00002105 DBET hash chain lock timeout INTERNAL LOCK NN DB.SP or DBID.PSID or NONE Additional keywords: ZSA45 MSGDSNT501I RC00C900C0
Temporary fix
********* * HIPER * *********
Comments
APAR Information
APAR number
PI49798
Reported component name
DB2 OS/390 & Z/
Reported component ID
5740XYR00
Reported release
B10
Status
CLOSED PER
PE
NoPE
HIPER
YesHIPER
Special Attention
NoSpecatt / Xsystem
Submitted date
2015-10-01
Closed date
2018-03-06
Last modified date
2018-04-03
APAR is sysrouted FROM one or more of the following:
APAR is sysrouted TO one or more of the following:
UI54304 UI54305
Modules/Macros
DSNIDBNG DSNIDBLG DSNIDBNI DSNIDBPL DSNIDBDA DSNIDBRP DSNIDBLK DSNIDBBD DSNIDBDF DSNIDBDG DSNIDBHK DSNIDBPX DSN1LOUT DSNIDBDR DSN1LDET DSNIDBSE DSNIDBDW DSNIDBMC DSNIDBSI DSNIDBMF DSNIDBMG DSNWDFDM DSNIDBGC DSNIDBAB DSNIDBAE DSNIDBIN DSNIDBMS DSNIDBEL DSNIDBGN DSNILMCL DSNWDFMG
GC19405300 | GC27884700 |
Fix information
Fixed component name
DB2 OS/390 & Z/
Fixed component ID
5740XYR00
Applicable component levels
Fix is available
Select the PTF appropriate for your component level. You will be required to sign in. Distribution on physical media is not available in all countries.
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Document Information
Modified date:
03 April 2018