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OA37338: EXCESSIVE CPU IN THE DEXAN COLLECTOR DUE TO INCLUDING OFFLINE UCBS

A fix is available

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You can track all active APARs for this component.

 

APAR status

  • Closed as program error.

Error description

  • DEXAN collector appears to be using excessive CPU in situations
    where a large number of DASD devices exist. We're updating the
    code to only scan online UCB's.
    

Local fix

  • No workaround, PTF required
    

Problem summary

  • ****************************************************************
    * USERS AFFECTED: OMEGAMON XE for IMS on Z/OS for V4.2.0       *
    *                 using DEXAN Bottleneck analysis.             *
    ****************************************************************
    * PROBLEM DESCRIPTION: Excessive CPU in the DEXAN collector    *
    *                      due to including offline UCBs.          *
    ****************************************************************
    * RECOMMENDATION: Apply this PTF.                              *
    ****************************************************************
    DEXAN collector appears to be using excessive CPU in
    situations where a large number of DASD devices exist.
    

Problem conclusion

  • DEXAN has been updated to only scan online UCB's.
    

Temporary fix

  • ************************
    * HIPER * PTF REQUIRED *
    ************************
    

Comments

APAR Information

  • APAR number

    OA37338

  • Reported component name

    OM XE FOR IMS Z

  • Reported component ID

    5698A3900

  • Reported release

    420

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    YesHIPER

  • Special Attention

    NoSpecatt

  • Submitted date

    2011-08-22

  • Closed date

    2011-11-21

  • Last modified date

    2011-12-01

  • APAR is sysrouted FROM one or more of the following:

  • APAR is sysrouted TO one or more of the following:

Modules/Macros

  • KOIDX0IQ KOIDX0JQ KOIDX0KQ KOIDX0LQ
    

Fix information

  • Fixed component name

    OM XE FOR IMS Z

  • Fixed component ID

    5698A3900

Applicable component levels

  • R420 PSY UA63247

       UP11/11/23 P F111

Fix is available

  • Select the PTF appropriate for your component level. You will be required to sign in. Distribution on physical media is not available in all countries.

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Document Information

Modified date:
01 December 2011