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PH49542: DISPLAY CFSTATUS TYPE(BACKUP) RETURNS A BKUPTIME 30 SECONDS EARLIER THAN THE BACKUP CFSTRUCT COMMAND EXECUTION

A fix is available

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APAR status

  • Closed as program error.

Error description

  • After the BACKUP CFSTRUCT command and a subsequent DISPLAY
    CFSTATUS TYPE(BACKUP) execution, it is possible to see that the
    BKUPTIME contains a time 30 seconds prior to the execution of
    BACKUP CFSTRUCT command.
    
    IBM MQ Development: z/OS Service team has been able to
    determine that this occurs because the value of field is
    incorrectly set from the backup cut-off time that is used to
    determine the messages that are backed-up. This field is
    therefore influenced by the EXCLINT value which is used to
    specify the number of seconds that are used as an exclusion
    time. The default value of this parameter is 30 seconds which
    means the backup would not include the last 30 seconds worth of
    activity for this application-structure before back up started.
    This would also explain why the value of the BKUPTIME was
    exactly 30 seconds prior to the BACKUP CFSTRUCT command.
    
    This field should instead represent the 'end time of the last
    successful backup taken for this application structure.'.
    

Local fix

Problem summary

  • ****************************************************************
    * USERS AFFECTED: All users of IBM MQ for z/OS Version 9       *
    *                 Release 2 Modification 0 and Release 3       *
    *                 Modification 0.                              *
    ****************************************************************
    * PROBLEM DESCRIPTION: After issuing a BACKUP CFSTRUCT         *
    *                      command immediately followed by a       *
    *                      DISPLAY CFSTATUS command, the BKUPTIME  *
    *                      field incorrectly contains a timestamp  *
    *                      prior to the execution of BACKUP        *
    *                      CFSTRUCT command. The amount by which   *
    *                      the timestamp is before is influenced   *
    *                      by the EXCLINT value specified when     *
    *                      the BACKUP CFSTRUCT is issued.          *
    ****************************************************************
    The code which handles the BKUPTIME field incorrectly assigns
    the wrong timing variable.
    

Problem conclusion

  • The code has been changed to assign the correct timing
    variable so that the BKUPTIME field now displays the end time
    of the last successful backup taken for the structure.
    

Temporary fix

Comments

APAR Information

  • APAR number

    PH49542

  • Reported component name

    IBM MQ Z/OS V9

  • Reported component ID

    5655MQ900

  • Reported release

    200

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt / Xsystem

  • Submitted date

    2022-09-15

  • Closed date

    2022-10-24

  • Last modified date

    2022-12-01

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

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

    UI82978 UI82979

Modules/Macros

  • CSQM1DSC
    

Fix information

  • Fixed component name

    IBM MQ Z/OS V9

  • Fixed component ID

    5655MQ900

Applicable component levels

  • R200 PSY UI82979

       UP22/11/29 P F211

  • R300 PSY UI82978

       UP22/11/29 P F211

Fix is available

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Document Information

Modified date:
01 December 2022