IC91009: PERFORMANCE COUNTER 'LOCK COUNT' DOES NOT RECORD ALL UPDATES

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APAR status

  • Closed as program error.

Error description

  • The performance counter (pmon) 'Lock count' might not record all
    updates in case of concurrent accesses.
    The 'Lock count' pmon seems to behave differently than other
    lock-manager-related pmons. With the other counters, the value
    is counted in certain intervals instead of only
    increments/decrements.
    

Local fix

Problem summary

  • ****************************************************************
    * USERS AFFECTED:                                              *
    * All users.                                                   *
    ****************************************************************
    * PROBLEM DESCRIPTION:                                         *
    * See Error Description                                        *
    ****************************************************************
    * RECOMMENDATION:                                              *
    * Upgrade to IBM solidDB V6.5 Fix Pack 13.                     *
    ****************************************************************
    

Problem conclusion

  • Fix is included in IBM solidDB V6.5 Fix Pack 13. The pmon 'Lock
    count' was not mutexed and its value might have lost updates in
    case of concurrent access. The 'Lock count' counter works now
    identically to other lock counters: the value is counted at
    intervals.
    

Temporary fix

Comments

APAR Information

  • APAR number

    IC91009

  • Reported component name

    SOLID UNIVERSL

  • Reported component ID

    5724W9100

  • Reported release

    650

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt

  • Submitted date

    2013-03-21

  • Closed date

    2013-03-21

  • Last modified date

    2013-03-21

  • 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

    SOLID UNIVERSL

  • Fixed component ID

    5724W9100

Applicable component levels

  • R650 PSY

       UP



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Document information


More support for:

IBM solidDB
solidDB Universal Cache

Software version:

650

Reference #:

IC91009

Modified date:

2013-03-21

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