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IZ73969: Applications fail - error MQRCCF_SUBSCRIPTION_IN_USE. Also, MQ V6 broker might fail to start. FDC probes PU294005/PU294010.

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APAR status

  • Closed as program error.

Error description

  • Applications fail during register subscriber operations with
    errors 3155 (MQRCCF_SUBSCRIPTION_IN_USE) and 3156
    (MQRCCF_SUBSCRIPTION_LOCKED). Additional symptoms include
    failures to restart the broker, with accompanying FDCs
    (PU294005 and PU294010). Once the broker fails to restart, no
    publish-subscribe activity is possible. A typical FDC might
    look as follows:
    
    Probe Id :- PU294005
    Component :- fkiRestoreSubscription
    Program Name :- amqfcxba
    Major Errorcode :- frcE_UNEXPECTED_ERROR
    MQM Function Stack
    fpiTaskReply
    faxRunStream
    fkxStartStream
    fkiRestoreRegistrations
    fkiProcessChangeRecord
    fkiReplayRegistrationRecord
    fkiRestoreSubscription
    xcsFFST
    
    Queue manager or broker restart does not resolve this issue.
    

Local fix

Problem summary

  • ****************************************************************
    USERS AFFECTED:
    Any users of WebSphere MQ issuing deregister subscriber commands
    with MQREGO_LEAVE_ONLY specified. An example would be a WAS
    pubsub application.
    
    Platforms affected:
    All Distributed (iSeries, all Unix and Windows)
    ****************************************************************
    PROBLEM SUMMARY:
    The problem was caused by WebSphere MQ writing multiple change
    records to the broker persistent state queue for one
    subscription if a deregister subscriber with MQREGO_LEAVE_ONLY
    was issued. Depending on the subsequent sequence of events,
    this could then lead to applications being returned 3155/3156
    errors during a register subscriber operation. This could also
    lead to failures to restart the broker as a result of duplicate
    subscriptions being present.
    

Problem conclusion

  • WebSphere MQ was modified to ensure that multiple change
    records for the same subscription are not persisted to the
    broker state queues.
    
    ---------------------------------------------------------------
    The fix is targeted for delivery in the following PTFs:
    
                       v6.0
    Platform           Fix Pack 6.0.2.10
    --------           --------------------
    Windows            U200318
    AIX                U832558
    HP-UX (PA-RISC)    U833084
    HP-UX (Itanium)    U833088
    Solaris (SPARC)    U833085
    Solaris (x86-64)   U832557
    iSeries            tbc_p600_0_2_10
    Linux (x86)        U832545
    Linux (x86-64)     U833083
    Linux (zSeries)    U833089
    Linux (Power)      U833087
    Linux (s390x)      U833086
    
    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

    IZ73969

  • Reported component name

    WMQ LIN X86 V6

  • Reported component ID

    5724H7204

  • Reported release

    600

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt

  • Submitted date

    2010-04-01

  • Closed date

    2010-04-27

  • Last modified date

    2010-04-27

  • 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 LIN X86 V6

  • Fixed component ID

    5724H7204

Applicable component levels

  • R600 PSY

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Document Information

Modified date:
27 April 2010