IBM Support

IV35452: ENDMQM PRODUCES AN FDC WITH THE FOLLOWING PROBE ID :- AO173001 ON COMPONENT :- AOULOCKOBJECTCATALOGUE

Subscribe

You can track all active APARs for this component.

 

APAR status

  • Closed as program error.

Error description

  • Running endmqm the following FDC is produced
    | LVLS              :- 7.1.0.1
    | Probe Id          :- AO173001
    | Application Name  :- MQM
    | Component         :- aouLockObjectCatalogue
    | SCCS Info         :- lib/lqm/amqaoula.c, 1.24.1.1
    | Line Number       :- 146
    | Build Date        :- May 16 2012
    | CMVC level        :- p710-001-120516
    | Effective UserID  :- 2801 (mqm)
    | Real UserID       :- 2801 (mqm)
    | Program Name      :- endmqm
    | Addressing mode   :- 64-bit
    | LANG              :- C
    | QueueManager      :- QMGR
    | UserApp           :- FALSE
    | Major Errorcode   :- krcE_UNEXPECTED_ERROR
    | Minor Errorcode   :- OK
    | Probe Type        :- INCORROUT
    | Probe Severity    :- 2
    | Probe Description :- AMQ6125: An internal WebSphere MQ error
    has occurred.
    | FDCSequenceNumber :- 0
    
    MQM Function Stack
    rrxStopAllChannels
    lpiSPICancelWaiter
    zifSPICancelWaiter
    zsqSPICancelWaiter
    kpiCancelWaiter
    kqiWakeUpWaiter
    apiEnquireObject
    aouLockObjectCatalogue
    xcsFFST
    

Local fix

Problem summary

  • ****************************************************************
    USERS AFFECTED:
    Users of WebSphere MQ who have an unusual setup where the
    transmit queue for the channel is an alias queue and the
    corresponding channel is in "running" state when an endmqm is
    issued.
    
    Platforms affected:
    All Distributed (iSeries, all Unix and Windows)
    ****************************************************************
    PROBLEM SUMMARY:
    During endmqm, channels need to be shut down. This can require
    cancelling a thread waiting for a message on a transmit queue.
    If the waiter is unusually attempting to get from an alias to
    that queue, the wakeup attempt may fail. That failure is due to
    an internal attempt to lock the object catalogue when the alias
    queue is locked, which violates the locking rules.
    

Problem conclusion

  • The WebSphere MQ code has been corrected to ensure that the
    locking in the area concerned follows the required locking
    rules.
    
    ---------------------------------------------------------------
    The fix is targeted for delivery in the following PTFs:
    
                       v7.1
    Platform           Fix Pack 7.1.0.3
    --------           --------------------
    Windows            7.1.0.3
    AIX                7.1.0.3
    HP-UX (Itanium)    7.1.0.3
    Solaris (SPARC)    7.1.0.3
    Solaris (x86-64)   7.1.0.3
    iSeries            7.1.0.3
    Linux (x86)        7.1.0.3
    Linux (x86-64)     7.1.0.3
    Linux (zSeries)    7.1.0.3
    Linux (Power)      7.1.0.3
    
    Platform           v7.5
    --------           --------------------
    Multiplatforms     7.5.0.2
    
    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

    IV35452

  • Reported component name

    WMQ AIX V7

  • Reported component ID

    5724H7221

  • Reported release

    710

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt

  • Submitted date

    2013-01-18

  • Closed date

    2013-01-29

  • Last modified date

    2013-01-29

  • 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 AIX V7

  • Fixed component ID

    5724H7221

Applicable component levels

  • R710 PSY

       UP

[{"Business Unit":{"code":"BU048","label":"IBM Software"},"Product":{"code":"SSCPQ63","label":"APAR \/ Maintenance"},"Component":"","ARM Category":[],"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"710","Edition":"","Line of Business":{"code":"","label":""}}]

Document Information

Modified date:
29 January 2013