IBM Support

IT19484: MQGET fails to convert MQCFST string data in PCF message. Reasoncode is MQRC_CONVERTED_STRING_TOO_BIG

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APAR status

  • Closed as program error.

Error description

  • An administration utility program was inquiring Channel Status
    via a PCF command, as normal.
    
    After upgrading to IBM MQ 8.0.0.4 onwards, the command failed.
     In MQ trace the following text is seen:
    
    ----------{  vwb_admin_string
    ......
    ----------}! vwb_admin_string rc=MQRC_CONVERTED_STRING_TOO_BIG
    
    later leading to
    
    ----------}! zstMQGET rc=MQRC_CONVERTED_STRING_TOO_BIG
    
    Also, the following error is written to the queue manager error
    log:
    
    AMQ6174: The dynamically loadable shared library
    '/var/mqm/exits64/MQADMIN' was not found.
    

Local fix

Problem summary

  • ****************************************************************
    USERS AFFECTED:
    Users of administration utility programs or any other program
    that makes use of PCF admin messages, and requires MQGET to
    convert these messages between different CCSIDs.  The problem is
    seen when the last block in the PCF message is a MQCFST block
    containing a zero-length string.
    
    
    Platforms affected:
    MultiPlatform
    
    ****************************************************************
    PROBLEM DESCRIPTION:
    There was a length calculation error within the routine that
    converts MQCFST string portions of PCF messages, when this
    appeared at the end of the message buffer.  The results of the
    length calculation error was to return a failure
    (MQRC_CONVERTED_STRING_TOO_BIG) when in fact there was no
    failure.
    
    This is an issue inadvertently added as a side-effect of a fix
    that went into fix pack 8.0.0.4.
    

Problem conclusion

  • The length calculation error has been corrected, so that the
    false failure is no longer returned.
    
    ---------------------------------------------------------------
    The fix is targeted for delivery in the following PTFs:
    
    Version    Maintenance Level
    v8.0       8.0.0.7
    v9.0 CD    9.0.3
    v9.0 LTS   9.0.0.2
    
    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 number

    IT19484

  • Reported component name

    WMQ BASE MULTIP

  • Reported component ID

    5724H7251

  • Reported release

    800

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt / Xsystem

  • Submitted date

    2017-03-01

  • Closed date

    2017-03-21

  • Last modified date

    2017-03-21

  • 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 BASE MULTIP

  • Fixed component ID

    5724H7251

Applicable component levels

  • R800 PSY

       UP

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Document Information

Modified date:
21 March 2017