IBM Support

IT22244: FDC with probe ID PU107020 and error code FRCE_BROKER_DEAD when ending queue manager

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APAR status

  • Closed as program error.

Error description

  • A failure data capture (FDC) record similar to the one below is
    generated while the queue manager is ending, the queue manager
    ends as expected.
    
    +----------------------------------------------------------+
    |                                                          |
    | WebSphere MQ First Failure Symptom Report                |
    | =========================================                |
    |                                                          |
    | Probe Id          :- PU107020                            |
    | Application Name  :- MQM                                 |
    | Component         :- faiUnknownStreamThread              |
    | SCCS Info         :-                                     |
    |  ...ot1/p800_P/src/com.ibm.mq.common/base/src/cmqxfaia.c |
    | Line Number       :- 1404                                |
    | Program Name      :- amqfcxba                            |
    | Addressing mode   :- 64-bit                              |
    | LANG              :- C                                   |
    | UserApp           :- FALSE                               |
    | Major Errorcode   :- frcE_BROKER_DEAD                    |
    | Minor Errorcode   :- OK                                  |
    | Probe Type        :- INCORROUT                           |
    | Probe Severity    :- 2                                   |
    | Probe Description :- AMQ6125: An internal                |
      WebSphere MQ error has occurred.                         |
    | FDCSequenceNumber :- 0                                   |
    +----------------------------------------------------------+
    [Some fields omitted for brevity]
    
    MQM Function Stack
    fpiTaskReply
    faxRunStream
    faiUnknownStreamThread
    xcsFFST
    

Local fix

  • The FDC can be ignored if seen when the queue manager is ending
    

Problem summary

  • ****************************************************************
    USERS AFFECTED:
    All users of IBM MQ
    
    
    Platforms affected:
    MultiPlatform
    
    ****************************************************************
    PROBLEM DESCRIPTION:
    A timing window existed in the IBM MQ publish subscribe control
    process (amqfcxba) during the shutdown of the queue manager.
    This timing window could cause the process to check the state of
    resources which had already been cleaned up by other shutdown
    processing. The absence of these resources cause the FDC record
    above to be generated.
    

Problem conclusion

  • The logic of the publish subscribe control process in the MQ
    queue manager has been updated to prevent checking these
    resources if the queue manager is ending, as it is expected that
    they will be removed during shutdown.
    
    ---------------------------------------------------------------
    The fix is targeted for delivery in the following PTFs:
    
    Version    Maintenance Level
    v8.0       8.0.0.8
    v9.0 CD    9.0.4
    v9.0 LTS   9.0.0.3
    
    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

    IT22244

  • Reported component name

    WMQ BASE MULTIP

  • Reported component ID

    5724H7251

  • Reported release

    800

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt / Xsystem

  • Submitted date

    2017-09-01

  • Closed date

    2017-09-04

  • Last modified date

    2017-09-04

  • 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

    5724H7251

Applicable component levels

  • R800 PSY

       UP



Document information

More support for: IBM MQ

Software version: 8.0.0.0

Reference #: IT22244

Modified date: 04 September 2017


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