IT04098: SOME MESSAGES RECEIVED BY A WMQ 7.0.1.12 ADVANCED MESSAGE SECURITY QUEUE MANAGER ARE CORRUPT WHEN USING PIPELINING

APAR status

• Closed as program error.

Error description

• When putting messages to a WebSphere MQ Advanced Message
  Security 7.0.1.12 queue manager, some of the all messages
  received are corrupt.
  .
  WMQ trace of the message channel agent (MCA) shows the valid
  messages are put by the same RCVR channel thread. The messages
  which are invalid are received and put by a second thread. That
  indicates the MCA is using pipelining. The Channel stanza in
  the qm.ini file shows PipeLineLength=2, which confirms the use
  of pipelining.
  

Local fix

• Do not use the Channel stanza parameter PipeLineLength=2
  with WMQ 7.0.1.12 Advanced Message Security.
  

Problem summary

• ****************************************************************
  USERS AFFECTED:
  Users implementing Advanced Message Security (AMS) and setting
  the PipeLineLength=2 parameter (pipelining) in the qm.ini
  Channels stanza.
  
  
  Platforms affected:
  MultiPlatform
  
  ****************************************************************
  PROBLEM DESCRIPTION:
  Encrypted messages received over a channel with pipelining in
  use have an extra AMS header added when put to the destination
  queue. This means that the message cannot be properly read from
  the queue. Attempts to read the message with conversion result
  in MQRC_FORMAT_ERROR.
  

Problem conclusion

• Ensure that messages do not have additional AMS headers added by
  channels using pipelining.
  
  ---------------------------------------------------------------
  The fix is targeted for delivery in the following PTFs:
  
  Version    Maintenance Level
  v7.0       7.0.1.13
  v7.1       7.1.0.7
  
  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 WINDOWS V7

• Fixed component ID

  5724H7220

Applicable component levels

• R700 PSY

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