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IT25665: ABORTED RESUBSCRIBE OF AN OBJECT FOR QUEUE MANAGER JOINED IN MULTIPLE CLUSTERS CAN RESULT IN SUBSCRIPTION INCONSISTENCIES.

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You can track all active APARs for this component.

APAR status

  • Closed as program error.

Error description

  • Errors AMQ9511 and AMQ9448 are logged along with FFST
    regarding ProbeID: RM220005 and Probe Type: MSGAMQ9511
    given by one or more slave repmans due to inconsistencies
    between CPUs regarding subscriptions in number and
    referenced object as well as expiration time.
    When multiple slaves are affected, in consequence the
    problem described in IT24388 may occur.
    This is a generic description of a multi root cause error
    scenario, please also check APARs about other problems
    identified: IT25665, IT25666, IT25669, IT25671.
    
    This APAR is about a problem identified during resubscribe
    for an object in all clusters, when the queue manager
    is joined into multiple clusters.
    

Local fix

  • N/A
    

Problem summary

  • In cases where the resubscribe operation is aborted,
    the list of clusters, created on start is not cleared.
    Due to this, the list is not newly created when used
    again and is therefore potentially not in the expected order.
    This causes problems in master/slave synchronization,
    which results in subscription inconsistencies.
    

Problem conclusion

  • Code was changed to guarantee, that list of associated
    clusters is always cleared after usage.
    

Temporary fix

Comments

APAR Information

  • APAR number

    IT25665

  • Reported component name

    WEBS MQ NSS ITA

  • Reported component ID

    5724A3902

  • Reported release

    531

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt / Xsystem

  • Submitted date

    2018-07-12

  • Closed date

    2018-07-13

  • Last modified date

    2018-07-13

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

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

Fix information

  • Fixed component name

    WEBS MQ NSS ITA

  • Fixed component ID

    5724A3902

Applicable component levels

  • R531 PSY

       UP



Document information

More support for: WebSphere MQ
APAR

Software version: 5.3.1

Reference #: IT25665

Modified date: 13 July 2018


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