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PM37647: EXTERNAL ENABLEMENT FOR PM24723 (IFCID 225 REAL STORAGE STATISTICS ENHANCEMENTS)

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APAR status

  • Closed as new function.

Error description

  • External enablement for APAR PM24723 (IFCID 225 REAL STORAGE
    STATISTICS ENHANCEMENTS)
    

Local fix

Problem summary

  • ****************************************************************
    * USERS AFFECTED: All DB2 users.                               *
    ****************************************************************
    * PROBLEM DESCRIPTION: This APAR provides enablement for APAR  *
    *                      PM24723: IFCID 225 real storage         *
    *                               statistics enhancements        *
    ****************************************************************
    * RECOMMENDATION:                                              *
    ****************************************************************
    APAR PM24723 provides enhancements to DB2 trace records to
    facilitate monitoring of real storage.  This APAR provides
    enhancements for managing real storage used by DB2.
    

Problem conclusion

Temporary fix

  • *********
    * HIPER *
    *********
    

Comments

  • Real storage consumption for a given DB2 subsystem
    can now be controlled via 2 system configuration
    parameters.
    
    REALSTORAGE_MANAGEMENT
    
    This parameter will tell DB2 how to manage
    real frames that are backed but are not being
    used by the system. With this parameter set to
    ON, unused backed real frames will be discarded
    when possible. When this parameter is set to
    OFF, DB2 will only unback unused frames when
    critical real storage or auxiliary storage usage
    is detected.  When this parameter is set to AUTO,
    DB2 will unback unused frames when the system
    begins to page. The default for this parameter
    is AUTO.
    
    New messages DSNV516I and DSNV517I will be
    written when DB2 enters and exits real storage
    contraction mode as controlled by
    REALSTORAGE_MANAGEMENT.
    
    
    REALSTORAGE_MAX
    
    This parameter will bound this DB2 subsystem
    to the amount of GB of real and auxiliary storage
    specified in this parameter.  DB2 will terminate
    if this threshold is reached.
    
    New message DSNS003I will be written when DB2
    approaches the threshold specified by
    REALSTORAGE_MAX.  New message DSNS004I will be
    written to indicate relief from this condition.
    

APAR Information

  • APAR number

    PM37647

  • Reported component name

    DB2 OS/390 & Z/

  • Reported component ID

    5740XYR00

  • Reported release

    A10

  • Status

    CLOSED UR1

  • PE

    NoPE

  • HIPER

    YesHIPER

  • Special Attention

    NoSpecatt

  • Submitted date

    2011-04-22

  • Closed date

    2011-06-09

  • Last modified date

    2011-07-05

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

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

    UK68659

Modules/Macros

  • DSN@XAZP DSNDQWPZ DSNDSPRM DSNTIDXA DSNTIDXB
    DSNTIJUZ DSNTINST DSNTXAZH DSNTXAZP DSNWZIFA DSNZOVTB DSN6SPRC
    DSN6SPRM
    

Fix information

  • Fixed component name

    DB2 OS/390 & Z/

  • Fixed component ID

    5740XYR00

Applicable component levels

  • RA10 PSY UK68659

       UP11/06/28 P F106

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.

[{"Business Unit":{"code":"BU050","label":"BU NOT IDENTIFIED"},"Product":{"code":"SSEPEK","label":"DB2 for z\/OS"},"Component":"","ARM Category":[],"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"10.1","Edition":"","Line of Business":{"code":"LOB10","label":"Data and AI"}},{"Business Unit":{"code":"BU048","label":"IBM Software"},"Product":{"code":"SG19M","label":"APARs - z\/OS environment"},"Component":"","ARM Category":[],"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"10.1","Edition":"","Line of Business":{"code":"","label":""}}]

Document Information

Modified date:
05 July 2011