IBM Support

PI77706: TPV STATISTIC COUNTER IS AGGREGATED INCORRECTLY.

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APAR status

  • Closed as program error.

Error description

  • TPV displays a statistic of parent node as well as its child
    node. If we select "JDBC Provider", TPV should aggregate its
    child DataSources.
    But statistics like PercentUsed is aggregated wrongly. Here is
    an example.
    TPV JDBC connection has following modules and sub modules.
    - JDBC Connection Pools
       + JDBC Provider (Derby, DB2 etc)
         + Data Source 1  (Connection pool maxium connection = 2)
         + Data Source 2  (Connection pool maxium connection = 3)
    Here is the result when we use 1 connection of each data
    sources.
        - JDBC Connection Pools - PercentUsed : 83 %
          + JDBC Provider       - PercentUsed : 83 %
            + Data Source 1     - PercentUsed : 50 %
            + Data Source 2     - PercentUsed : 33 %
    PercentUsed of parent node shouldn't be just summed. It should
    be
    aggregated to reflect actual usage of child datasources.
    

Local fix

  • calculate manually
    

Problem summary

  • ****************************************************************
    * USERS AFFECTED:  All users of IBM WebSphere Application      *
    *                  Server                                      *
    ****************************************************************
    * PROBLEM DESCRIPTION: PMI counters for percentage data are    *
    *                      aggregated by summing child stats. This *
    *                      will cause the value to be go over      *
    *                      100%.                                   *
    ****************************************************************
    * RECOMMENDATION:                                              *
    ****************************************************************
    PMI counters for percentage data are aggregated by summing child
    stats. This will cause the value to be go over 100%. The correct
    aggregation technique should be the sum of child stats dividing
    the
    number of child stats.
    

Problem conclusion

Temporary fix

Comments

APAR Information

  • APAR number

    PI77706

  • Reported component name

    WEBSPHERE APP S

  • Reported component ID

    5724J0800

  • Reported release

    850

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt / Xsystem

  • Submitted date

    2017-03-06

  • Closed date

    2017-08-10

  • Last modified date

    2017-08-10

  • 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

    WEBSPHERE APP S

  • Fixed component ID

    5724J0800

Applicable component levels

  • R850 PSY

       UP

  • R900 PSY

       UP



Document information

More support for: WebSphere Application Server
General

Software version: 850

Reference #: PI77706

Modified date: 10 August 2017


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