IBM Support

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

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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 number

    IT04098

  • Reported component name

    WMQ WINDOWS V7

  • Reported component ID

    5724H7220

  • Reported release

    700

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt

  • Submitted date

    2014-08-29

  • Closed date

    2014-09-23

  • Last modified date

    2014-09-23

  • 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

       UP

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Document Information

Modified date:
23 September 2014