IBM Support

IT28022: AMQ9469 in Full Repository error logs when cluster transmission queue has custom cap expiry set.

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APAR status

  • Closed as program error.

Error description

  • The following error message is a sample recorded in the queue
    manager error log.
    
    AMQ9469: Update not received for CLUSRCVR channel
    ClusterName.QmgrName hosted on  queue manager
    QmgrName_2018-01-14_17.42.01 in cluster ClusterName.
    
    EXPLANATION:
    The repository manager detected that the CLUSRCVR channel has
    not been re-published by its owning queue manager. This
    re-publish action should have happened automatically XX days
    ago, or in the time between then and now.
    ----------------------------------------------------------------
    
    The above error message would be seen when the the cluster
    transmission queue is configured with a custom expiration time
    using CUSTOM(CAPEXPRY(n)).
    
    Refer to:
    Enforcing lower expiration times
    https://www.ibm.com/support/knowledgecenter/en/SSFKSJ_8.0.0/com.
    ibm.mq.ref.dev.doc/q097495_.htm
    

Local fix

  • Remove the custom expiry time from the cluster transmit queue.
    

Problem summary

  • ****************************************************************
    USERS AFFECTED:
    Users who have set capped expiry times on their cluster
    transmission queues using CUSTOM(CAPEXPRY(n)).
    
    
    Platforms affected:
    MultiPlatform
    
    ****************************************************************
    PROBLEM DESCRIPTION:
    Expiry times of around 30 days are set on cluster internal state
    messages by IBM MQ, and it is not appropriate to have these
    expiry times reduced. If the cluster transmission queue is
    configured with a custom expiration time lower than 30 days,
    internal MQ cluster state update messages being sent to Full
    Repositories can expire prematurely and are not sent. This
    causes the AMQ9469 message in the MQ error logs.
    
    Capped expiry times are set using CUSTOM(CAPEXPRY(n)) in a
    DEFINE QLOCAL or ALTER QLOCAL command.
    

Problem conclusion

  • The MQ code has been modified such that the cluster repository
    manager process will ignore a configured CAPEXPRY value when it
    puts internal state messages to cluster transmission queues.
    
    CUSTOM(CAPEXPRY(n)) should not be used on any queues that will
    hold MQ internally-generated messages.  For example, any
    SYSTEM.CLUSTER.* queue, the SYSTEM.PROTECTION.POLICY.QUEUE, etc.
    
    ---------------------------------------------------------------
    The fix is targeted for delivery in the following PTFs:
    
    Version    Maintenance Level
    v8.0       8.0.0.12
    v9.0 LTS   9.0.0.7
    v9.1 CD    9.1.3
    v9.1 LTS   9.1.0.3
    
    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

    IT28022

  • Reported component name

    IBM MQ BASE MP

  • Reported component ID

    5724H7251

  • Reported release

    800

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt / Xsystem

  • Submitted date

    2019-02-07

  • Closed date

    2019-03-22

  • Last modified date

    2019-05-09

  • 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

    IBM MQ BASE MP

  • Fixed component ID

    5724H7251

Applicable component levels

[{"Business Unit":{"code":"BU053","label":"Cloud & Data Platform"},"Product":{"code":"SSYHRD","label":"IBM MQ"},"Component":"","ARM Category":[],"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"8.0.0.0","Edition":"","Line of Business":{"code":"LOB36","label":"IBM Automation"}}]

Document Information

Modified date:
09 May 2019