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PM90344: WMQ Z/OS: ABN=0C4-00000004,C=R3600.701.MMC -CSQMMTPR,M=CSQGFRCV,LOC=CSQMLPLM.CSQMMTPR+00001624

A fix is available

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APAR status

  • Closed as program error.

Error description

  • An abend occurred:
    TITLE: MQP1,ABN=0C4-00000004,C=R3600.701.MMC -CSQMMTPR,M=CSQ
     GFRCV,LOC=CSQMLPLM.CSQMMTPR+00001624
     .
     OTHER SERVICEABILITY INFORMATION
       Date Assembled:          20111013
       Module Level:            13.04GA
       Subfunction:             MMC  CSQMMTPRMsgTknTb
    .
    When you back up the PSW by the Instruction Length of 4 bytes,
    the failing instruction is BA06 5000.  Reg5=00000058, which is
    bad after an LA instruction based on Reg9=00000000.  Reg9
    should have pointed to an MTTB control block.
    .
    The problem occurs for a JMS application (bindings or client)
    that uses a selector (in this case for CorrelId) against a
    dynamic queue. When the application closes the queue (either
    implicitly or explicitly) CSQMCLS2 is called, and the control
    blocks for the queue, including the IVSA, are released.
    However, the address of the freed IVSA is passed to CSQMMTPR.
    When there is an attempt to reference the contents of the freed
    IVSA, the 0C4 may occur. If the IVSA is reallocated by another
    thread before the closing thread references the IVSA, the 0C4
    may not occur.
    .
    Additional keywords:
    ABEND0C4 ABENDS0C4 0C4 S0C4 S00C4 tempdyn
    

Local fix

Problem summary

  • ****************************************************************
    * USERS AFFECTED: All users of WebSphere MQ Version 7          *
    *                 Release 0 Modification 1.                    *
    ****************************************************************
    * PROBLEM DESCRIPTION: Applications getting messages using     *
    *                      selectors from dynamic queues           *
    *                      experience abend 0C4-00000004 in        *
    *                      CSQMMTPR when the queue is closed and   *
    *                      deleted.                                *
    *                                                              *
    *                      Client applications also experience     *
    *                      abend 5C6-00E7014F in CSQXADPM.         *
    *                                                              *
    *                      Sometimes queue manager terminates with *
    *                      abend 6C6-00940001                      *
    ****************************************************************
    * RECOMMENDATION:                                              *
    ****************************************************************
    Dynamic queue close and delete process has the wrong clean up
    sequence freeing storage used later in the process.
    

Problem conclusion

  • Dynamic queue close and delete process has the correct clean up
    sequence to avoid 0C4 abend and unexpected termination the queue
    manager.
    010Y
    CSQMCLS2
    

Temporary fix

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

Comments

APAR Information

  • APAR number

    PM90344

  • Reported component name

    WMQ Z/OS V7

  • Reported component ID

    5655R3600

  • Reported release

    010

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    YesHIPER

  • Special Attention

    NoSpecatt / Xsystem

  • Submitted date

    2013-06-04

  • Closed date

    2013-06-26

  • Last modified date

    2013-09-03

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

    PM81652

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

    UK95416

Modules/Macros

  • CSQMCLS2
    

Fix information

  • Fixed component name

    WMQ Z/OS V7

  • Fixed component ID

    5655R3600

Applicable component levels

  • R010 PSY UK95416

       UP13/08/23 P F308 Ž

Fix is available

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Document Information

Modified date:
03 September 2013