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JR52545: NUMEROUS TIMER EVENTS DEGRADE PERFORMANCE OF QUERIES AGAINST EVENT MANAGER TABLES

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APAR status

  • Closed as program error.

Error description

  • When you use numerous timer events in your business processes,
    you might see lock contentions in the database on
    LSW_EM_TASK_KEYWORDS table and might notice that event manager
    queries are running slowly.
    

Local fix

Problem summary

  • When you create timer tasks, event records are inserted into the
    LSW_EM_TASK_KEYWORDS table. Some of the event records are
    distinct; others have the same value for a set of events, but
    there is one value that is inserted for every timer event:
    bpd.group.BPDIntermediateTimerEvent. These event records can
    take up to a third of the total records of the table, which can
    lead to contention during insert and delete operations.
    

Problem conclusion

  • A fix is available for IBM BPM V8.5.5.0 that prevents the
    bpd.group.BPDIntermediateTimerEvent keyword from being created.
    
    On Fix Central (http://www.ibm.com/support/fixcentral), search
    for JR52545:
    
    1. Select IBM Business Process Manager with your edition from
      the product selector, the installed version to the fix pack
      level, and your platform, and then click Continue.
    
    2. Select APAR or SPR, enter JR52545, and click Continue.
    
    When you download fix packages, ensure that you also download
    the readme file for each fix. Review each readme file for
    additional installation instructions and information about the
    fix.
    

Temporary fix

  • Not applicable
    

Comments

APAR Information

  • APAR number

    JR52545

  • Reported component name

    BPM ADVANCED

  • Reported component ID

    5725C9400

  • Reported release

    855

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt

  • Submitted date

    2015-02-12

  • Closed date

    2015-04-09

  • Last modified date

    2015-04-09

  • 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

    BPM STANDARD

  • Fixed component ID

    5725C9500

Applicable component levels

  • R855 PSY

       UP

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Document Information

Modified date:
09 April 2015