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IV30489: MQ STATISTICS: GETCOUNT AND GETFAILCOUNT SHOW INCORRECT VALUES

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APAR status

  • Closed as program error.

Error description

  • When enabling the gathering of queue statistics in WebSphere MQ,
    it is noticed that when using amqsmon, the values for GetCount
    and GetFailCount are sometimes incorrect, and do not reflect
    the number of PutCount actions.
    
    For example, when doing a Put of 10 non-persistent messages,
    the Get values are off:
    PutCount: [10, 0]
    PutFailCount: 0
    PutBytes: [1234, 0]
    GetCount: [20, 0]
    GetBytes: [2468, 0]
    GetFailCount: 10
    .
    Notice the following relationships in the amqsmon output:
    GetFailCount = PutCount
    GetCount     = PutCount * 2
    GetBytes     = PutBytes * 2
    

Local fix

Problem summary

  • ****************************************************************
    USERS AFFECTED:
    Users using WebSphere MQ statistics feature
    
    Platforms affected:
    All Distributed (iSeries, all Unix and Windows)
    ****************************************************************
    PROBLEM SUMMARY:
    The problem occurred because of incorrectly capturing the
    statistics twice in some cases when using asynchronous consume
    feature.
    

Problem conclusion

  • WebSphere MQ has been modified to correctly capture the
    statistics when asynchronous consume feature is used.
    
    ---------------------------------------------------------------
    The fix is targeted for delivery in the following PTFs:
    
                       v7.0
    Platform           Fix Pack 7.0.1.11
    --------           --------------------
    Windows            7.0.1.11
    AIX                7.0.1.11
    HP-UX (PA-RISC)    7.0.1.11
    HP-UX (Itanium)    7.0.1.11
    Solaris (SPARC)    7.0.1.11
    Solaris (x86-64)   7.0.1.11
    iSeries            7.0.1.11
    Linux (x86)        7.0.1.11
    Linux (x86-64)     7.0.1.11
    Linux (zSeries)    7.0.1.11
    Linux (Power)      7.0.1.11
    
                       v7.1
    Platform           Fix Pack 7.1.0.3
    --------           --------------------
    Windows            7.1.0.3
    AIX                7.1.0.3
    HP-UX (Itanium)    7.1.0.3
    Solaris (SPARC)    7.1.0.3
    Solaris (x86-64)   7.1.0.3
    iSeries            7.1.0.3
    Linux (x86)        7.1.0.3
    Linux (x86-64)     7.1.0.3
    Linux (zSeries)    7.1.0.3
    Linux (Power)      7.1.0.3
    
    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

    IV30489

  • Reported component name

    WMQ AIX V7

  • Reported component ID

    5724H7221

  • Reported release

    701

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt

  • Submitted date

    2012-10-18

  • Closed date

    2013-01-30

  • Last modified date

    2013-01-30

  • 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 AIX V7

  • Fixed component ID

    5724H7221

Applicable component levels

  • R701 PSY

       UP

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Document Information

Modified date:
30 January 2013