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PH00111: WMQ V9.0 SMF116 LATENCY RECORD FIELDS SET TO ZERO FOR SOME QUEUES

A fix is available

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APAR status

  • Closed as program error.

Error description

  • Fields MAXLATNT, MINLATNT and TOTLATNT in SMF116 records are
    filled with zeroes after migrate to IBM MQ for z/OS
    Ver.9.0, for some queues.
    
    From the SMF data and dump I can see there is another codepath
    that can result in the WWFR control block not being created
    when only Class 3 accounting is enabled.
    

Local fix

  • No Local Fix
    

Problem summary

  • ****************************************************************
    * USERS AFFECTED: All users of IBM MQ for z/OS Version 9       *
    *                 Release 0 Modification 0.                    *
    ****************************************************************
    * PROBLEM DESCRIPTION: SMF116 records for CICS transactions    *
    *                      contain incorrect or missing data when  *
    *                      only class 3 accounting trace is        *
    *                      enabled.                                *
    ****************************************************************
    When CSQMCPRH checks whether it needs to allocate a WWFR control
    block for the current task due to Class 3 accounting trace being
    enabled, it only does so for QRPL requests from RMID's other
    than MMC.
    In CICS environments, when an ACE/EB is reused from the MCLB
    free chain it is possible that no WWFR will have been allocated
    and for only MMC related requests to be processed. In this
    situation the WWFR is never allocated, and so the affected
    fields are not correctly populated.
    

Problem conclusion

  • CSQMCPRH is changed to allocate the WWFR if accounting class 3
    is enabled, for all QRPL requests.
    

Temporary fix

Comments

APAR Information

  • APAR number

    PH00111

  • Reported component name

    IBM MQ Z/OS V9

  • Reported component ID

    5655MQ900

  • Reported release

    000

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt / Xsystem

  • Submitted date

    2018-07-06

  • Closed date

    2018-07-31

  • Last modified date

    2018-09-04

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

    PI93388

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

    UI57582 PH21900

Modules/Macros

  • CSQMCPRH
    

Fix information

  • Fixed component name

    IBM MQ Z/OS V9

  • Fixed component ID

    5655MQ900

Applicable component levels

  • R000 PSY UI57582

       UP18/08/31 P F808

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:
04 September 2018