A fix is available
APAR status
Closed as program error.
Error description
A DB2 batch job has issued an MQCLOSE with MQCO_DELETE_PURGE against a dynamic queue, while there were large amount of messages on the queue (16,530,997 messages on the queue). This has resulted in a large number of locks needing to be obtained in order to delete the messages on the queue, which has resulted in the above-the-bar storage being exhausted (based on the current MEMLIMIT specification) and has lead to the 5C6-00E20045 abends. . ABN=5C6-00E20045,U=DB2xxxx,C=R3600.710.LOCK-CSQLGETL, M=CSQGFRCV,LOC=CSQLLPLM.CSQLGETL+00001484 Symptom Description ------- ----------- PIDS/5655R3600 Program id: 5655R3600 RIDS/CSQLLPLM#L Load module name: CSQLLPLM RIDS/CSQLGETL Csect name: CSQLGETL AB/S05C6 System abend code: 05C6 PRCS/00E20045 Abend reason code: 00E20045 REGS/C15C4 Register/PSW difference for R0C:-15C4 RIDS/CSQGFRCV#R Recovery routine csect name: CSQGFRCV . Date Assembled: 20111013 Module Level: 12.53GA Subfunction: LOCK CSQLGETLCritical . In IPCS: VERBX CSQWDPRD 'SUBSYS=CRP3,LKM=1' . Number of lock requests: 17569690 Number of lock releases: 84166 . MQTHR . Jobname <DB2JOB> Conntype BATCH ASID x00DF ASCE 22E785D0 EB 228BC6B8 ACE 228BC658 Jobname <DB2JOB> TCB 008C27F8 Active in MQ EB latch held mask 01002100 (DMCITREE)(BMXL3/CFMTODO)+ ***Abend and reason code 5C6-00E20045 ***Lock requests 09787717 ***Object handles 00000004 ***URID 00001A009A2C offloads 72192 shunt RBA 000000000000 EB 228BEA10 ACE 228BE9B0 Jobname <DB2JOB> TCB 008B5460 ***Lock requests 00000002 ***Object handles 00000002 EB 228BCCD0 ACE 228BCC70 Jobname <DB2JOB> TCB 008BB0D0 ***Lock requests 00000002 ***Object handles 00000001 EB 228BDF18 ACE 228BDEB8 Jobname <DB2JOB> TCB 008B5CF0 ***Lock requests 00000002 ***Object handles 00000001 EB 228BDB70 ACE 228BDB10 Jobname <DB2JOB> TCB 008BB9C0 ***Lock requests 00000002 ***Object handles 00000001 . In the MSTR job-log, there were several CSQY227E messages. . CSQY227E ssid CSQSQC64 Unable to allocate storage 378 above the bar using IARV64, RC=00000008, reason=4A001620
Local fix
Problem summary
**************************************************************** * USERS AFFECTED: All users of WebSphere MQ Version 7 * * Release 1 Modification 0. * **************************************************************** * PROBLEM DESCRIPTION: Application using MQCLOSE with option * * MQCO_DELETE_PURGE or command DELETE Q * * PURGE can cause queue manager to abend * * due to shortage of storage above the * * bar. * * Messages CSQY225E and CSQY227E are * * issued together with 5C6-00E20045 * * abends. * **************************************************************** * RECOMMENDATION: * **************************************************************** Deleting/purging queues when there are 1000's of messages to clear from the queue can cause a shortage of storage above the bar.
Problem conclusion
The purging of messages is now done in batches to avoid the allocation of large amounts of storage above the bar. 100Y CSQIDEL3
Temporary fix
********* * HIPER * *********
Comments
×**** PE14/09/05 FIX IN ERROR. SEE APAR PI25131 FOR DESCRIPTION
APAR Information
APAR number
PM93543
Reported component name
WMQ Z/OS V7
Reported component ID
5655R3600
Reported release
100
Status
CLOSED PER
PE
NoPE
HIPER
YesHIPER
Special Attention
NoSpecatt / Xsystem
Submitted date
2013-07-22
Closed date
2013-10-29
Last modified date
2014-09-30
APAR is sysrouted FROM one or more of the following:
APAR is sysrouted TO one or more of the following:
UI11858
Modules/Macros
CSQIDEL3
Fix information
Fixed component name
WMQ Z/OS V7
Fixed component ID
5655R3600
Applicable component levels
R100 PSY UI11858
UP13/11/20 P F311
Fix is available
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Document Information
Modified date:
30 September 2014