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PI60014: WMQ ABENDS0C4 ABN=0C4-00000004 BUFF-CSQP3GET,M=CSQGFRCV, LOC=CSQPLPLM.CSQP3GET ABEND S0C4 0C4 BUFFER POOLS ABOVE THE BAR

A fix is available

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APAR status

  • Closed as program error.

Error description

  • ABEND S0C4 0C4 ABENDS0C4 ABN=0C4-00000010,U=XXXXXX
    ,C=W9700.800.BUFF-CSQP3GET,M=CSQGFRCV,LOC=CSQPLPLM.
    CSQP3GET+00000EB2
    .
    ABN=0C4-00000004,U=MMMMMM
    ,C=W9700.800.BUFF-CSQP3GET,M=CSQGFRCV,LOC=CSQPLPLM.
    CSQP3GET+00000EB6
    .
    Subfunction:             BUFF CSQP3GETSTEAL_PAGE
    .
    The problem occurs when using buffer pools above the bar (i.e.
    64 bit) and the readahead function is turned on and a
    buffer needs to be 'stolen' from a buffer pool.
    .
    Additional keywords:
    ABEND0C4 ABENDS0C4 S0C4 S00C4 0C4 MQABBP/K
    

Local fix

Problem summary

  • ****************************************************************
    * USERS AFFECTED: All users of WebSphere MQ Version 8          *
    *                 Release 0 Modification 0.                    *
    ****************************************************************
    * PROBLEM DESCRIPTION: CSQP3GET generates 0C4 abend or loops   *
    *                      using high CPU when MSTR address space  *
    *                      is configured to use read ahead, buffer *
    *                      pools above the bar and messages using  *
    *                      old MQ V6 format.                       *
    *                      Occasionally, queue manager terminates  *
    *                      with reason 00D95001.                   *
    ****************************************************************
    * RECOMMENDATION:                                              *
    ****************************************************************
    CSQP3GET calls macro ?csqirahr to request read ahead services.
    The read ahead function PAGEOUT does not support 64-bit buffer
    pools and it truncates the high part of the buffer address
    resulting in 0C4 abends or loops.
    

Problem conclusion

  • Macro ?csqirahr has been changed to support 64-bit message
    buffer addresses.
    000Y
    CSQIMGEF
    CSQIMGE3
    CSQIMGE4
    CSQIMGE5
    CSQIMGE9
    CSQISCN3
    CSQP2GET
    CSQP3GET
    

Temporary fix

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

Comments

APAR Information

  • APAR number

    PI60014

  • Reported component name

    WMQ Z/OS 8

  • Reported component ID

    5655W9700

  • Reported release

    000

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    YesHIPER

  • Special Attention

    NoSpecatt / Xsystem

  • Submitted date

    2016-03-31

  • Closed date

    2016-05-06

  • Last modified date

    2016-06-02

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

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

    UI37605

Modules/Macros

  • CSQIMGEF CSQIMGE3 CSQIMGE4 CSQIMGE5 CSQIMGE9 CSQISCN3 CSQP2GET
    CSQP3GET
    

Fix information

  • Fixed component name

    WMQ Z/OS 8

  • Fixed component ID

    5655W9700

Applicable component levels

  • R000 PSY UI37605

       UP16/05/26 P F605 ¢

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:
02 June 2016