IBM Support

IT19661: DELAYS IN MQPUT WHEN PUBLISHING A MESSAGE USING COMPLEX SUBSCRIPTION SELECTOR

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APAR status

  • Closed as program error.

Error description

  • If MQ subscriber applications publish messages which use
    complex subscription selectors, then the time taken to evaluate
    the selector also increases as the number of logical conditions
    increases, causing an increasing delay in the MQPUT call. The
    performance impact depends on the number of selectors,
    subscribers and the complexity of the selectors.
    

Local fix

Problem summary

  • ****************************************************************
    USERS AFFECTED:
    Users of IBM MQ v8 or v9 using complex message selectors.
    
    
    Platforms affected:
    MultiPlatform
    
    ****************************************************************
    PROBLEM DESCRIPTION:
    Inefficiencies in the message selection evaluation algorithms
    for IBM MQ version 8 and 9 were identified.
    

Problem conclusion

  • MQ selector evaluation code has been modified to improve
    performance when using complex selectors.
    
    ---------------------------------------------------------------
    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   9.0.0.1
    
    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

    IT19661

  • 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

    2017-03-13

  • Closed date

    2017-03-16

  • Last modified date

    2017-03-16

  • 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



Document information

More support for: WebSphere MQ

Software version: 8.0.0.0

Reference #: IT19661

Modified date: 16 March 2017


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