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Improving system performance on DB2

Dears

I have set up a new system and increased the number of WP. Will increasing the number of update process help to improve performance.

Is there any way I can speed up my DB2 to handle more load or more requests per unit time ?

Thanks,

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  • author's profile photo Former Member
    Former Member
    Posted on Nov 20, 2011 at 03:29 AM

    > I have set up a new system and increased the number of WP. Will increasing the number of update process help to improve performance.

    Not Exactly.

    Performance tuning is really a wide concept, try to go through the guide -

    http://www.sdn.sap.com/irj/scn/go/portal/prtroot/docs/library/uuid/60fe97e1-12e3-2c10-2f8d-ccb9a5450a99?QuickLink=index&overridelayout=true

    Thanks

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    • Former Member

      Hi Jay,

      assuming your DB2 is running on Linux Unix or Windows, you have to set up your system according to note

      1329179 DB2 v9.7 standard parameter settings (if your release is 9.5/9.1 check the linked notes)

      You should also check the DBA guide

      http://service.sap.com/operationsNW70 -> Database-Specific Guides

      this note might be useful as well

      25528 Parameter rdisp/max_wprun_time

      your system should perform fine with this setup. If not, then you will have to make further adjustments depending on your requirements.

      Let me know if your DB2 is running on mainframe (z/OS ,OS390 ), because the above recommendations wouldn't apply in this case.

      regards, Javier

  • Posted on Nov 20, 2011 at 02:54 PM

    Hi,

    Whatever may be your OS platform, first step towards performance tuning would be to identify whether you have any bottlenecks. Try to dig out the root cause of the bottleneck

    1) Monitor SAP buffer utilization using ST02

    2) Monitor database and SAP response time using ST03N.

    3) Check database fill level using db02.

    After observing above mentioned parameters you can get a way to fine tune your system with the SAP notes mentioned in above response.

    Hope this helps.

    Regards,

    Deepak Kori

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    • Hi,

      Disk Busy% KBPS TPS KB-Read KB-Writ

      Total 96.0 2286.0 188.0 1442.0 844.0

      It definitely seems issue with your disks orientation and layout. Utilization is 96% percent.

      1) What is the RAID configuration you have done ?

      2) How is the stripping done in the storage ?

      3) Is the SAN storage design done based on number of IOPs required ?

      4) Whats the RPM for your disk ?

      Regards,

      Deepak Kori

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