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

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 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

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