PM76918: DUMP TITLE=CSQ1, ABN=0C4-00000011, C=R3600.701.CHIN, M=CSQXDISP LOC=CSQXRCTL.CMQXRSTF+04AAC

A fix is available

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APAR status

  • Closed as program error.

Error description

  • While running along, the customer received the following
    abend:
    Dump Title=CSQ1,ABN=0C4-00000011,C=R3600.701.CHIN,M=CSQXDISP
    LOC=CSQXRCTL.CMQXRSTF+04AAC
    Abend 0c4 in CMQXRSTF+04AAC while updating statistics in
    function rstSendNotification for a channel.
    .
    The change team reviewed the doc for this and they can see the
    cause of the problem. It occurs when a MQCMD_INQUIRE_Q_NAMES
    PCF command is issued and there are a large number of queues
    defined (in this case over 2000).
    .
    The PCF response message returned by the queue-manager is
    incomplete (truncated). During data conversion processing the
    length of the message is set to the complete (untruncated)
    length. This causes the 0C4 in rstSendAsyncMessage when the
    MQCMD_INQUIRE_Q_NAMES PCF command originates from a
    client channel.
    

Local fix

Problem summary

  • ****************************************************************
    * USERS AFFECTED: All users of WebSphere MQ for z/OS version 7 *
    *                 Release 0 Modification 1 and Release 1       *
    *                 Modification 0.                              *
    ****************************************************************
    * PROBLEM DESCRIPTION: When not specifying                     *
    *                      MQCACF_COMMAND_SCOPE, corrupt or        *
    *                      incomplete data is returned when        *
    *                      putting PCF messages with               *
    *                      MQCMD_INQUIRE_*_NAMES commands on the   *
    *                      SYSTEM.COMMAND.INPUT queue and the      *
    *                      reply contains large numbers of         *
    *                      objects, causing the reply message to   *
    *                      contain more than 64Kb of data.         *
    ****************************************************************
    * RECOMMENDATION:                                              *
    ****************************************************************
    The length field used to calculate the response message length
    is an unsigned 16 bit field, allowing for a maximum length of
    65535 bytes.
    When the reply is larger, the length field wraps around and an
    incomplete response message is generated.
    

Problem conclusion

  • The code was changed to use 64 bit length fields for PCF
    responses to PCF messages with MQCMD_INQUIRE_*_NAMES, not
    specifying the MQCACF_COMMAND_SCOPE parameter,  that were put on
    the SYSTEM.COMMAND.INPUT queue.
    010Y
    100Y
    CSQFGENP
    CSQFSAMG
    CSQMDNAM
    CSQMDRTP
    CSQNRTS
    CSQ1SAMG
    CSQ9SCNP
    

Temporary fix

Comments

APAR Information

  • APAR number

    PM76918

  • Reported component name

    WMQ Z/OS V7

  • Reported component ID

    5655R3600

  • Reported release

    010

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt

  • Submitted date

    2012-11-12

  • Closed date

    2013-03-28

  • Last modified date

    2013-06-04

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

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

    UK91898 UK91899

Modules/Macros

  •    CSQFGENP CSQFSAMG CSQMDNAM CSQMDRTP CSQNRTS
    CSQ1SAMG CSQ9SCNP
    

Fix information

  • Fixed component name

    WMQ Z/OS V7

  • Fixed component ID

    5655R3600

Applicable component levels

  • R010 PSY UK91898

       UP13/05/08 P F305

  • R100 PSY UK91899

       UP13/05/08 P F305

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


More support for:

z/OS family

Software version:

7.0.1

Reference #:

PM76918

Modified date:

2013-06-04

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