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PI38633: ABN=0C4-00000004, M=CSQGFRCV,LOC=CSQWVCOL.CSQWVCOL

A fix is available

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APAR status

  • Closed as program error.

Error description

  • ABN=0C4-00000004, CSQWTRC M=CSQGFRCV,
    LOC=CSQWVCOL.CSQWVCOL
     The 0C4 is occurring when CSQMCPEN attempts to trace the RAL.
    The problem appears to be due to pRAL being 0, indicating that
    there was no RAL when the module was called - although a RAL
    has subsequently been created, pRAL is not updated to refer
    to it. This causes CSQWVCOL to copy from low storage for a
    length determined from values in low storage, leading to the
    reported 0C4.
    

Local fix

Problem summary

  • ****************************************************************
    * USERS AFFECTED: All users of WebSphere MQ for z/OS Version 8 *
    *                 Release 0 Modification 0.                    *
    ****************************************************************
    * PROBLEM DESCRIPTION: Abend 0C4-00000004 in CSQWVCOL issued   *
    *                      in MSTR address space.                  *
    ****************************************************************
    * RECOMMENDATION:                                              *
    ****************************************************************
    The problem happens when CSQMCPEN attempts to write the exit
    trace point.
    CSQMCPEN attempts to trace pRAL for a length of pRAL->RALTLEN,
    however pRAL itself is zero and the contents of pRAL->RALTLEN
    are whatever happens to exist at the RALTLEN offset from address
    0. Normally this value will also be zero and therefore there is
    no issue, however if RALTLEN does contain a value (as is the
    case if PRIMEPSA is turned on) then CSQMCPEN will attempt to
    trace a length of storage, some of which may be inaccessible,
    resulting in the 0C4-00000004.
    

Problem conclusion

  • CSQMCPEN will now trace out the pRAL pointer itself, rather than
    the range of storage.
    000Y
    CSQMCPEN
    

Temporary fix

Comments

APAR Information

  • APAR number

    PI38633

  • Reported component name

    WMQ Z/OS 8

  • Reported component ID

    5655W9700

  • Reported release

    000

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt / Xsystem

  • Submitted date

    2015-04-08

  • Closed date

    2015-04-27

  • Last modified date

    2015-07-01

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

    PI23624

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

    UI27082

Modules/Macros

  • CSQMCPEN
    

Fix information

  • Fixed component name

    WMQ Z/OS 8

  • Fixed component ID

    5655W9700

Applicable component levels

  • R000 PSY UI27082

       UP15/06/03 P F506

Fix is available

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Document Information

Modified date:
01 July 2015