IT21087: Cluster channel fails to start after queue manager restart with messages on the cluster transmit queue

IBM MQ for HP NonStop Server V8.1 Fix Pack 8.1.0.5

APAR status

• Closed as program error.

Error description

• When a cluster Queue Manager is restarted with pending messages
  on the cluster transmit queue, cluster sender channels which
  should restart (those not explicitly placed in STOPPED state)
  may fail to start.
  

Local fix

• Issue the 'start channel' command using runmqsc or MQExplorer to
  restart channels that were not in STOPPED state when the queue
  manager previously ended.
  

Problem summary

• ****************************************************************
  USERS AFFECTED:
  This issue affects users of MQ clustering
  
  
  Platforms affected:
  MultiPlatform
  
  ****************************************************************
  PROBLEM DESCRIPTION:
  Memory used by a data structure related to the cluster transmit
  queue that occurs on queue manager startup was not initialized
  prior to use, which resulted the channel not starting.
  

Problem conclusion

• The MQ queue manager logic has been corrected to initialize the
  affected data structure prior to use
  
  ---------------------------------------------------------------
  The fix is targeted for delivery in the following PTFs:
  
  Version    Maintenance Level
  v8.0       8.0.0.13
  v9.0 LTS   9.0.0.2
  
  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

  IBM MQ BASE M/P

• Fixed component ID

  5724H7261

Applicable component levels

• R900 PSY

     UP