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IC90143: EXCESSIVE MEMORY USAGE WITH XML SYSTEM TEMPORARY TABLES

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You can track all active APARs for this component.

APAR status

  • Closed as program error.

Error description

  • As of DB2 version 9.7 Fix Pack 6/ Version 10.1 GA, systems with
    a a very high concurrent requirement of XML system temporary
    tables may see higher memory usage in the database heap.  In all
    but extreme cases this additional memory usage will be
    insignificant.
    
    Example db2pd -alldbs -mempools output, showing that the real
    memory usage (PhySz) greatly exceeds the internal requirement
    (LogSz)
    Memory Pools:
    MemSet   PoolName   Id    LogSz       LogUpBnd    LogHWM
    PhySz       PhyUpBnd    PhyHWM
    TRWPRD   dbh        2     255440313   2423652352  255667442
    1751908352  2423652352  1751908352
    

Local fix

Problem summary

  • ****************************************************************
    * USERS AFFECTED:                                              *
    * systems processing XML data                                  *
    ****************************************************************
    * PROBLEM DESCRIPTION:                                         *
    * See Error Description                                        *
    ****************************************************************
    * RECOMMENDATION:                                              *
    * Upgrade to DB2 Version 9.7 Fix Pack 9                        *
    ****************************************************************
    

Problem conclusion

  • Problem first fixed in DB2 Version 9.7 Fix Pack 9
    

Temporary fix

Comments

APAR Information

  • APAR number

    IC90143

  • Reported component name

    DB2 FOR LUW

  • Reported component ID

    DB2FORLUW

  • Reported release

    970

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt

  • Submitted date

    2013-02-11

  • Closed date

    2013-12-26

  • Last modified date

    2013-12-26

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

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

    IC90242

Modules/Macros

  • sqo
    

Fix information

  • Fixed component name

    DB2 FOR LUW

  • Fixed component ID

    DB2FORLUW

Applicable component levels

  • R970 PSN

       UP



Document information

More support for: DB2 for Linux, UNIX and Windows

Software version: 9.7

Reference #: IC90143

Modified date: 26 December 2013