IT33352: Additional version checks on internal logger data structures

APAR status

• Closed as program error.

Error description

• The APAR adds additional eyecatcher and version checks on MQ
  data structures to ensure that they are consistent with the
  current version and correct eyecatcher before the logs are used.
  

Local fix

Problem summary

• ****************************************************************
  USERS AFFECTED:
  Users starting queue manager after reverting back MQ from higher
  MQ version to lower MQ version or with corrupted log records
  
  
  Platforms affected:
  MultiPlatform
  
  ****************************************************************
  PROBLEM DESCRIPTION:
  It is unsupported to start a queue manager using transactional
  log files created or modified by a newer product version. In
  this scenario, or when the log files have been corrupted,
  additional validity checks were identified that allow for the
  generation of more appropriate error messages.
  

Problem conclusion

• MQ code has been modified such that it generates a more
  meaningful error message if the queue manager is being
  incorrectly started using an older product version, and also
  when the log records are corrupted.
  
  ---------------------------------------------------------------
  The fix is targeted for delivery in the following PTFs:
  
  Version    Maintenance Level
  v9.0 LTS   9.0.0.11
  v9.1 LTS   9.1.0.7
  v9.x CD    9.2.2
  
  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