IT23549: Running "strmqm -r" against an activated backup queue manager hangs

APAR status

• Closed as program error.

Error description

• Using a backup queue manager as described in the IBM MQ product
  documentation below:
  
  https://www.ibm.com/support/knowledgecenter/SSFKSJ_8.0.0/com.ibm
  .mq.con.doc/q018610_.htm
  
  The queue manager has initially been activated as described
  below:
  
  > strmqm -a XYZ
  WebSphere MQ queue manager 'XYZ' is being activated.
  The queue manager is associated with installation 'abc'.
  WebSphere MQ queue manager 'XYZ' activated.
  mqm@test123 (0) 10:36 12/12/17 /var/mqm
  .
  After running the update command, "strmqm -r", an infinite loop
  can occur on the activated queue manager. If no new logfiles
  have been copied to /mqlog/XYZ.
  .
  The following example demonstrates this:
  .
  mqm@test123 (0) 10:36 12/12/17 /var/mqm
  > strmqm -r XYZ
  WebSphere MQ queue manager 'XYZ' is being started for replay.
  The queue manager is associated with installation 'abc'.
  11 log records accessed on queue manager 'XYZ' during the log
  replay phase.
  11 log records accessed on queue manager 'XYZ' during the log
  replay phase.
  11 log records accessed on queue manager 'XYZ' during the log
  replay phase.
  ...
  ...
  .
  

Local fix

Problem summary

• ****************************************************************
  USERS AFFECTED:
  Users using a backup queue manager or queue managers running
  with linear logging.
  
  
  Platforms affected:
  MultiPlatform
  
  ****************************************************************
  PROBLEM DESCRIPTION:
  A logic error with the queue manager's logger component
  incorrectly requested an additional log extent be allocated
  during startup. As it was not appropriate to allocate a new
  extent in this case, this caused the queue manager to hang.
  

Problem conclusion

• MQ code has been modified to fix problem.
  
  ---------------------------------------------------------------
  The fix is targeted for delivery in the following PTFs:
  
  Version    Maintenance Level
  v8.0       8.0.0.9
  v9.0 CD    9.0.5
  v9.0 LTS   9.0.0.4
  
  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