IT16009: ADDITIONAL UNEXPECTED ERRORS CAUSED BY CORRUPTED MODEL QUEUE FILES ON DISK

APAR status

• Closed as program error.

Error description

• An FFDC is reported with Probe Id AQ130120 reporting a
  damaged object.
  
  The following can be seen in the FFDC file:
  
  Operating System  :- SunOS 5.10
  PIDS              :- 5724H7223
  LVLS              :- 7.5.0.3
  Product Long Name :- WebSphere MQ for Solaris (SPARC platform)
  Probe Id          :- AQ130120
  Application Name  :- MQM
  Component         :- aqqValidateQHeader
  Program Name      :- amqzlaa0
  Addressing mode   :- 64-bit
  Major Errorcode   :- arcE_OBJECT_DAMAGED
  Minor Errorcode   :- OK
  Probe Type        :- INCORROUT
  Probe Severity    :- 2
  Probe Description :- AMQ6125: An internal WebSphere MQ error
  has ccurred.
  FDCSequenceNumber :- 0
  
  MQM Function Stack
  zlaMainThread
  zlaProcessMessage
  zlaProcessMQIRequest
  zlaMQOPEN
  zsqMQOPEN
  kpiMQOPEN
  kqiOpenIt
  kqiOpenQueue
  kqiOpenModel
  apiCreateDynamicQueue
  aocCreateDynamicQueue
  aocPerformCreation
  aodCreate
  aqmReuseQueue
  aqmAccessQueue
  aqqAccessQueue
  aqqAccessQHeader
  aqqValidateQHeader
  xcsFFST
  
  Probe IDs AO074001, AO074003, and KN090002 may also be seen from
  the amqzlaa0 process.
  

Local fix

• 1. Delete the damaged model queue in runmqsc.
  2. Stop the queue manager.
  3. Recreate the system objects (strmqm -c).
  4. Start the queue manager.
  

Problem summary

• ****************************************************************
  USERS AFFECTED:
  Users of MQ where one or more model queue files have become
  corrupted. This is usually due to a failed user operation, such
  as a backup or restore of the queue files.
  
  
  Platforms affected:
  MultiPlatform
  
  ****************************************************************
  PROBLEM DESCRIPTION:
  If a model queue  file had become corrupted on the disk,
  omissions in the error handling logic could lead to MQ partially
  initializing the internal queue object. If encountered, this
  partially initialized object caused the FDC records to be
  produced.
  

Problem conclusion

• The code has been improved to better handle these error
  conditions if the model queue file has become corrupted.
  
  Damaged model queues should be recreated by the user. If the
  damaged queues are system model queues, users can run strmqm
  with the -c option to regenerate system objects.
  
  ---------------------------------------------------------------
  The fix is targeted for delivery in the following PTFs:
  
  Version    Maintenance Level
  v7.5       7.5.0.5
  v8.0       8.0.0.2
  
  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 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

  5724H7241

Applicable component levels