IT24527: FDCs reporting hrcE_LOG_FULL followed by arcE_OBJECT_DAMAGED after restarting queue manager

APAR status

• Closed as program error.

Error description

• Failure Data Capture (FDC) records are generated indicating LOG
  FULL are reported during queue manager shutdown.
  The following FDCs indicating object damage might also be
  generated upon queue
  manager restart.
  
  HL010004 hlgReserveLogSpace hrcE_LOG_FULL
  HL006009 hlgWriteLogRecord hrcE_LOG_FULL
  AL047010 alsCheckPointLoop arcW_MSG_LOG_TOO_SMALL
  AQ123002 aqqLoadMsgHdr arcE_OBJECT_DAMAGED
  AQ060020 aqhLoadMsgChain arcE_OBJECT_DAMAGED
  AQ123002 aqqLoadMsgHdr arcE_OBJECT_DAMAGED
  AQ060020 aqhLoadMsgChain arcE_OBJECT_DAMAGED
  
  MQM Function Stack
  amqzxma0
  zxcExecutionController
  kpiShutdown
  apiShutdown
  aocPerformShutdown
  aqmShutdownQueue
  aqhCompactQueue
  aqhMoveMessage
  aqqCopyMsg
  aqqWriteMsgData
  aqlReservePutSpace
  almReserveSpace
  hlgReserveLogSpace
  xcsFFST
  

Local fix

Problem summary

• ****************************************************************
  USERS AFFECTED:
  All users of IBM MQ and likely when the queue depth is high.
  
  
  Platforms affected:
  MultiPlatform
  
  ****************************************************************
  PROBLEM DESCRIPTION:
  An error condition when compacting queue file data structures
  during shutdown was not correctly handled. This led to a failure
  to check that there was sufficient log space available to
  continue with the compaction. If the log space was exhausted
  during queue compaction, the potential existed for the queue
  file being compacted to become damaged.
  

Problem conclusion

• The queue manager's queue compaction routines has been modified
  to add an additional check during queue compaction.
  
  This is an extension of checks added previously under APAR
  IT16268, which fixed a separate logic error in  queue compaction
  routines that might cause object damage.
  
  ---------------------------------------------------------------
  The fix is targeted for delivery in the following PTFs:
  
  Version    Maintenance Level
  v8.0       8.0.0.11
  v9.0 LTS   9.0.0.5
  
  
  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

  IBM MQ BASE MP

• Fixed component ID

  5724H7251

Applicable component levels