IC93838: SUBSCRIBERS WERE NOT ABLE TO RECEIVE MESSAGES FOR A WEBSPHERE MQ V7 CLUSTER TOPIC AFTER A RESET CLUSTER COMMAND WAS ISSUED.

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You can track all active APARs for this component.

APAR status

  • Closed as program error.

Error description

  • When RESET CLUSTER is issued to remove a duplicate queue manager
    from a cluster, publications are no long received by the
    subscriber connected to the wanted/original queue manager. No
    errors or FDCs are generated.
    

Local fix

  • Remove the topic from the MQ cluster and add the topic back
    into the MQ Cluster. A topic is removed from the MQ cluster
    by setting the CLUSTER attribute to a null('') value. A
    topic can be added to the MQ cluster by modifying the
    CLUSTER attribute value with the MQ Cluster name.
    For more information about cluster topics or Publish and
    Subscribe please review the WebSphere MQ v7.x Infocenter.
    .
    http://www-01.ibm.com/software/integration/wmq/library/
    

Problem summary

  • ****************************************************************
    USERS AFFECTED:
    Users of Publish/Subscribe Clusters
    
    
    Platforms affected:
    MultiPlatform
    
    ****************************************************************
    PROBLEM SUMMARY:
    The problem was caused because of the assumption in the proxy
    subscription notification task, that there is only ever one
    queue manager of this name in the cluster.
    

Problem conclusion

  • The problem is resolved by checking if there are secondary queue
    managers with the same name and requesting the other queue
    managers in the cluster re-synchronise their knowledge of the
    configuration with respect to proxy subscriptions.
    
    ---------------------------------------------------------------
    The fix is targeted for delivery in the following:
    
    Version            v7.5
    --------           --------------------
    Fix available in:  7.5.0.3
    
    The latest available maintenance can be obtained from
    'WebSphere MQ Recommended Fixes'
    http://www-1.ibm.com/support/docview.wss?rs=171&uid=swg27006037
    
    If the maintenance level is not yet available information on
    its planned availability can be found in 'WebSphere MQ
    Planned Maintenance Release Dates'
    http://www-1.ibm.com/support/docview.wss?rs=171&uid=swg27006309
    ---------------------------------------------------------------
    

Temporary fix

Comments

APAR Information

  • APAR number

    IC93838

  • Reported component name

    WMQ BASE MULTIP

  • Reported component ID

    5724H7241

  • Reported release

    750

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt

  • Submitted date

    2013-07-01

  • Closed date

    2013-07-18

  • Last modified date

    2013-07-18

  • 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

    WMQ BASE MULTIP

  • Fixed component ID

    5724H7241

Applicable component levels

  • R750 PSY

       UP



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Document information


More support for:

WebSphere MQ
APAR / Maintenance

Software version:

7.5

Reference #:

IC93838

Modified date:

2013-07-18

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