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IV19726: ITM AGENT IS SLOW TRANSFERRING DATA FROM NCPOLLDATA TO TDW

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APAR status

  • Closed as program error.

Error description

  • v3.8.0.75 - platform independent.
    
    ITM agent is very slow in moving data from local db(NCPOLLDATA)
    to Tivoli Data Warehouse(TDW) due to inefficient queries under
    getPolldata.pl
    

Local fix

Problem summary

  • ****************************************************************
    * USERS AFFECTED:                                              *
    * ITNM 3.8 and 3.9 users that are running the ITNM ITM agent   *
    * to move performance data to Tivoli data warehouse.           *
    ****************************************************************
    * PROBLEM DESCRIPTION:                                         *
    * When ITNM is setup to have multiple pollers and ITM agent    *
    * instances it was causing these components performance to be  *
    * low due to table locks. There was to many processes trying   *
    * to do deletes, inserts and queries using committed reads on  *
    * pollData table causing table locks. These table locks would  *
    * cause a deterioration on performance because a SQL statement *
    * would be on wait until the lock is released.                 *
    ****************************************************************
    * RECOMMENDATION:                                              *
    * Replace the getPolldata.pl on <ITMDIR>/<platform>/np/bin or  *
    * update the ITM agent with the version that contains the fix. *
    * ITNM-IP | fix pack | 3.9.0-ITNMIP-FP0002                     *
    * ITNM-IP | fix pack | 3.8.0-ITNMIP-FP0007                     *
    ****************************************************************
    

Problem conclusion

  • When using the updated getPolldata.pl it will use uncommitted
    reads which don't lock the pollData table too often. The script
    also do a delete on chunks of 50 rows which cause less table
    locks because before it would do a large commit of up to 50000
    rows. These changes improved considerably the performance of the
    data transfer to Tivoli data warehouse
    

Temporary fix

Comments

APAR Information

  • APAR number

    IV19726

  • Reported component name

    TIV NETWK MGR I

  • Reported component ID

    5724S4500

  • Reported release

    380

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt

  • Submitted date

    2012-04-16

  • Closed date

    2012-04-30

  • Last modified date

    2012-05-01

  • 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

    TIV NETWK MGR I

  • Fixed component ID

    5724S4500

Applicable component levels

  • R380 PSN

       UP

  • R380 PSY

       UP

  • R390 PSN

       UP

  • R390 PSY

       UP

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Document Information

Modified date:
01 May 2012