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IC89751: WMQ HP NONSTOP V5.3.1 CLUSTER SENDER CHANNEL HAD TO BE RESTARTED MANUALLY AFTER RECYCLING THE CPU.

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APAR status

  • Closed as program error.

Error description

  • Stopped the CPU. Found the Cluster Sender Channel was stopped
    The event AMQ9604  Cluster Sender Channel stopped unexpectedly
    was reported.  When the qmgr was restarted the channel remained
    in an inactive state. When messages were put via the channel
    the messages remained in the SYSTEM.CLUSTER.REPOSITORY.QUEUE
    The channel had to be manually restarted.
    

Local fix

Problem summary

  • If a CLUSSDR or SDR channel is running in an MCA that is in the
    same CPU as the Primary Channel Server,  and that channel has
    been running for at least 5 minutes, and that CPU crashes, the
    channel will not automatically restart. This is a consequence of
    the Takeover logic in the channel server unsetting the InUse
    flag for the channel, because the RETRY flag has not been set.
    This in turn prevents the Channel Retry logic from attempting to
    restart the channel.
    

Problem conclusion

  • If the Channel Server is performing a Takeover, the channel
    status should be updated to RETRY and the InUse flag should be
    left as is, therby causing the channel retry logic to be
    executed.
    

Temporary fix

  • Start the affected channel manually
    

Comments

APAR Information

  • APAR number

    IC89751

  • 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

    2013-01-22

  • Closed date

    2013-01-22

  • Last modified date

    2013-01-22

  • 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

[{"Line of Business":{"code":"LOB36","label":"IBM Automation"},"Business Unit":{"code":"BU053","label":"Cloud & Data Platform"},"Product":{"code":"SSFKSJ","label":"WebSphere MQ"},"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"5.3.1"}]

Document Information

Modified date:
17 November 2020