IC86755: DB2CKUPGRADE PERFORMANCE IMPROVEMENT FOR TABLE LOAD PENDING CHECK

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You can track all active APARs for this component.

APAR status

  • Closed as program error.

Error description

  • The tool db2ckupgrade evaluates the table status for each table
    defined in a database to ensure no table is in load pending
    state.
    
    If the database has a large number of tables and indexes defined
    and hosts a considerable amount of data this check can take very
    long.
    A DB2 trace with perfcount option (db2trc on -perfcount -t) will
    show a lot of time spend in following functions:
    
    sqlrlAdminGetTabInfo
    sqldGetTableData
    sqldGetTableDataForPermOrTemp
    sqlbReadPageInternal
    sqldGetDataForObjSizes
    sqlbGetObjActualSize
    sqlbDMSGetObjActualSize
    sqldGetIndexObjInfo
    sqldGetDataForTableInfo
    
    This APAR will change the way db2ckupgrade checks the table load
    pending state to improve performance.
    
    The tool db2ckupgrade is run from the installation/CD of the new
    DB2 server copy to which one is upgrading to. However, it is run
    against the downlevel DB2 server which is targeted for upgrade.
    The fix requires both the downlevel DB2 server as well as the
    new DB2 server to be at a fix level mentioned in the
    Recommendation section below.
    

Local fix

Problem summary

  • ****************************************************************
    * USERS AFFECTED:                                              *
    * ALL                                                          *
    ****************************************************************
    * PROBLEM DESCRIPTION:                                         *
    * See Error Description                                        *
    ****************************************************************
    * RECOMMENDATION:                                              *
    * Upgrade to DB2 Version 10.1 Fix Pack 3.                      *
    * (Note: The fix requires both the DB2 server as well as the   *
    * db2ckupgrade tool to be at the fix level mentioned.)         *
    ****************************************************************
    

Problem conclusion

  • First fixed in DB2 Version 10.1 Fix Pack 3.
    

Temporary fix

Comments

APAR Information

  • APAR number

    IC86755

  • Reported component name

    DB2 FOR LUW

  • Reported component ID

    DB2FORLUW

  • Reported release

    A10

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt

  • Submitted date

    2012-09-24

  • Closed date

    2013-02-19

  • Last modified date

    2013-07-31

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

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

    IC94505 IC94506 IC94507

Fix information

  • Fixed component name

    DB2 FOR LUW

  • Fixed component ID

    DB2FORLUW

Applicable component levels

  • RA10 PSN

       UP



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Document information


More support for:

DB2 for Linux, UNIX and Windows

Software version:

10.1

Reference #:

IC86755

Modified date:

2013-07-31

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