IBM Support

IT34107: HIGH CPU USAGE WHEN DB2_ALTERNATE_GROUP_LOOKUP REGISTRY VARIABLEAND OS GROUP NAMES DOES NOT MATCH DB2 NAMING RULES

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You can track all active APARs for this component.

 

APAR status

  • Closed as program error.

Error description

  • Group lookup may encounter an infinite loop when
    DB2_ALTERNATE_GROUP_LOOKUP registry variable is set to
    GETUSERATTR and the OS returns group names that do not match Db2
    naming rules.
    
    May result in authentication or statements appearing to hang
    with high CPU usage.
    

Local fix

Problem summary

  • ****************************************************************
    * USERS AFFECTED:                                              *
    * all                                                          *
    ****************************************************************
    * PROBLEM DESCRIPTION:                                         *
    * See Error Description                                        *
    ****************************************************************
    * RECOMMENDATION:                                              *
    * Upgrade to Db2 11.5.5.0 or higher                            *
    ****************************************************************
    

Problem conclusion

  • Upgrade to Db2 11.5.5.0 or higher
    

Temporary fix

Comments

APAR Information

  • APAR number

    IT34107

  • Reported component name

    DB2 FOR LUW

  • Reported component ID

    DB2FORLUW

  • Reported release

    B50

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt / Xsystem

  • Submitted date

    2020-09-03

  • Closed date

    2020-11-20

  • Last modified date

    2020-11-20

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

    IT33865

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

    428AC7Ÿ IT34936

Fix information

  • Fixed component name

    DB2 FOR LUW

  • Fixed component ID

    DB2FORLUW

Applicable component levels

  • RB50 PSN

       UP

[{"Line of Business":{"code":"LOB10","label":"Data and AI"},"Business Unit":{"code":"BU053","label":"Cloud \u0026 Data Platform"},"Product":{"code":"SSEPGG","label":"DB2 for Linux- UNIX and Windows"},"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"11.5"}]

Document Information

Modified date:
27 August 2021