PI08262: IFCID 25 DOES NOT INCLUDE ZIIP ON CP TIME SPENT IN DB2 SORT

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

  • When not all zIIP eligible workload in DB2 Sort for z/OS can be
    executed on zIIP then this zIIP on CP time is not captured in
    any field in IFCID 25 so that the total CPU time does not match
    SMF 30 record values.
    

Local fix

  • Consult SMF 30 records for zIIP on CP time.
    

Problem summary

  • ****************************************************************
    * USERS AFFECTED: All DB2 9 for z/OS, DB2 10 for z/OS, and     *
    *                 DB2 11 for z/OS utility users with DB2 Sort  *
    *                 for z/OS with zIIPs who capture IFCID 25     *
    *                 for utility CPU time measurements.           *
    ****************************************************************
    * PROBLEM DESCRIPTION: Fields QW0025UC and QW0025SC do not     *
    *                      account for zIIP on CP time spent in    *
    *                      DB2 Sort for z/OS enclaves. This may    *
    *                      cause a mismatch between CPU times      *
    *                      reported in QW0025UC and SMF30CPT.      *
    ****************************************************************
    * RECOMMENDATION: Apply corrective PTF when available          *
    ****************************************************************
    Some workloads scheduled for zIIPs in DB2 Sort for z/OS may
    actually be executed on standard processors when no zIIPs are
    currently available. This standard CPU time, however, is not
    part of the CPU time fields QW0025UC and QW0025SC in IFCID 25.
    This may lead to minor differences between times reported in
    QW0025UC and SMF30CPT.
    

Problem conclusion

  • DB2 Sort will provide a PTF for APAR PI08309 to return the zIIP
    on CP time to DB2. DB2 utilities will include this information
    in IFCID 25 in fields QW0025UC and QW0025SC when the PTF for
    PI08309 is installed.
    

Temporary fix

Comments

APAR Information

  • APAR number

    PI08262

  • Reported component name

    DB2 OS/390 & Z/

  • Reported component ID

    5740XYR00

  • Reported release

    910

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt

  • Submitted date

    2013-12-17

  • Closed date

    2014-02-06

  • Last modified date

    2014-03-03

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

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

    UI14868 UI14869 UI14870

Modules/Macros

  • DSNUGLSR DSNUGSOR DSNUGSRP DSNUGSRT DSNUKXSR
    

Fix information

  • Fixed component name

    DB2 OS/390 & Z/

  • Fixed component ID

    5740XYR00

Applicable component levels

  • RA10 PSY UI14868

       UP14/02/21 P F402

  • RB10 PSY UI14869

       UP14/02/21 P F402

  • R910 PSY UI14870

       UP14/02/21 P F402

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


More support for:

DB2 for z/OS

Software version:

910

Reference #:

PI08262

Modified date:

2014-03-03

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