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PI15961: ABN=522-00000000,U=XXXXXXX,C=R3600.710.ASMC-CSQVSRX, M=CSQVSRRX,PSW=070C000081342002,ASID=YYYY

A fix is available

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APAR status

  • Closed as program error.

Error description

  • A customer's job created dynamic shared queue WXYZ and
    had queued a request to structure task SSS while holding
    the latch in the IVSA for the queue.
    SSS was processing a delete request for queue WXYZ, and
    a 'Shared Queue Close Processing' (CSQECLOS) had queued
    a request to the DB2SRV to delete the queue object
    from DB2.
    However, DB2SRV was processing a DISPLAY QUEUE request
    and was waiting for the IVSA latch for WXYZ.
    It created a deadly embrace which results in the
    S522 abend.
    .
    In the WMQ log:
    .
    IEA794I SVC DUMP HAS CAPTURED:
       IEA794I SVC DUMP HAS CAPTURED:
    
       DUMPID=022 REQUESTED BY JOB (WMQ_JOBNAME)
    
       DUMP TITLE=XXXX,ABN=522-00000000,U=xxxxxxx ,
       C=R3600.710.ASMC-CSQVSRX ,M=CSQVSRRX,
       PSW=070C000081342002,ASID=yyyy
    .
    ABN=522-00000000,U=xxxxxxx,C=R3600.710.ASMC-CSQVSRX,
    M=CSQVSRRX,PSW=070C000081342002,ASID=yyyy
    .
    Symptom          Description
    -------          -----------
    PIDS/5655R3600   Program id: 5655R3600
    RIDS/UNKNOWN#L   Load module name: UNKNOWN
    RIDS/UNKNOWN     Csect name: UNKNOWN
    AB/S0522         System abend code: 0522
    RIDS/CSQVSRRX#R  Recovery routine csect name:
                     CSQVSRRX
    .
    OTHER SERVICEABILITY INFORMATION
    .
      Date Assembled: UNKNOWN
      Module Level:   UNKNOWN
      Subfunction:    ASMC CSQVSRX SUSP/RESM
    
    
    Additional Symptom(s) Search Keyword(s):
    .
    ABEND ABEND522 ABENDS522 S0522
    878-00000010,C=R3600.710.DB2M,M=CSQ5MFRR,PSW=070C0000A6F76740
    

Local fix

Problem summary

  • ****************************************************************
    * USERS AFFECTED: All users of WebSphere MQ for z/OS Version 7 *
    *                 Release 1 Modification 0.                    *
    ****************************************************************
    * PROBLEM DESCRIPTION: ABENDS522 due to a deadlock             *
    *                      when deleting a queue.                  *
    ****************************************************************
    * RECOMMENDATION:                                              *
    ****************************************************************
    An application created a dynamic shared queue WXYZ and queued a
    request to STRTSK06 while holding the latch in the IVSA for the
    queue.
    STRTSK06 was processing a DELETE request for queue ABCD, and
    had queued a request to DB2SRV02 to delete the queue object
    from DB2.
    DB2SRV02 is processing a DISPLAY QUEUE request and wants the
    latch in the IVSA for queue WXYZ.
    This creates a deadly embrace, and results in ABENDS522.
    

Problem conclusion

  • CSQ5DBRQ has been altered so even numbered DB2SRVxx tasks will
    not be available for DBRQ_TEST_MASK_DELETE requests.
    100Y
    CSQ5DELE
    CSQ5LIST
    

Temporary fix

  • *********
    * HIPER *
    *********
    

Comments

APAR Information

  • APAR number

    PI15961

  • 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

    2014-04-14

  • Closed date

    2014-07-28

  • Last modified date

    2014-09-03

  • APAR is sysrouted FROM one or more of the following:

  • APAR is sysrouted TO one or more of the following:

    UI20014

Modules/Macros

  • CSQ5DELE CSQ5LIST
    

Fix information

  • Fixed component name

    WMQ Z/OS V7

  • Fixed component ID

    5655R3600

Applicable component levels

  • R100 PSY UI20014

       UP14/08/30 P F408 ¢

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 September 2014