IBM Support

IT29806: MQ C clients cannot process a CCDT file created by a newer queuemanager

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APAR status

  • Closed as program error.

Error description

  • MQ C and unmanaged .NET clients earlier at versions earlier than
    9.1.3 are sensitive to the incrementing of a version field
    within the CCDT. If these clients read such a CCDT from a 9.1.3
    queue manager, the client is unable to correctly parse the CCDT.
    

Local fix

  • Recreate the CCDT file at the same release as the client from
    MQSC definitions.
    

Problem summary

  • ****************************************************************
    USERS AFFECTED:
    Users that have clients that use CCDTs generated by newer levels
    of code are potentially affected.
    
    This issue affects the MQ C client and unmanaged .NET client.
    
    
    Platforms affected:
    MultiPlatform
    
    ****************************************************************
    PROBLEM DESCRIPTION:
    A CCDT was generated on an MQ 9.1.3 installation and used by an
    older level of client, the MQCD version used by MQ 9.1.3 was not
    understood correctly by the client and the channel definition
    was corrupted/unusable.
    

Problem conclusion

  • The MQ client logic was corrected to permit any version of MQCD
    to be read and to copy only the fields that the level of client
    can use.
    
    ---------------------------------------------------------------
    The fix is targeted for delivery in the following PTFs:
    
    Version    Maintenance Level
    v8.0       8.0.0.14
    v9.0 LTS   9.0.0.9
    v9.1 CD    9.1.5
    v9.1 LTS   9.1.0.5
    
    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

    IT29806

  • Reported component name

    IBM MQ BASE MP

  • Reported component ID

    5724H7251

  • Reported release

    800

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt / Xsystem

  • Submitted date

    2019-07-23

  • Closed date

    2019-10-31

  • Last modified date

    2020-10-01

  • 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

[{"Line of Business":{"code":"LOB36","label":"IBM Automation"},"Business Unit":{"code":"BU053","label":"Cloud & Data Platform"},"Product":{"code":"SSYHRD","label":"IBM MQ"},"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"8.0.0.0"}]

Document Information

Modified date:
02 October 2020