IBM Support

IT30119: SELECT MIGHT UNNECESSARILY ACQUIRE IN LOCK

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You can track all active APARs for this component.

 

APAR status

  • Closed as program error.

Error description

  • When running a select on a table Db2 might unnecessarily acquire
    an Intentional None Lock on that table:
    
    ID of agent holding lock = 1
    Application ID holding lock = 127.0.0.1.40424.190406213448
    Lock name = 0x50008D08000000000000000054
    Lock attributes = 0x00000000
    Release flags = 0x00000000
    Lock object type = Table
    Lock mode = Intent None Lock (IN)
    ...
    Name of tablespace holding lock = TBSP1
    Schema of table holding lock = SCHEMA1
    Name of table holding lock = TABLE1
    Data Partition Id of table holding lock = 0
    Lock wait start timestamp = 01/01/1970 00:00:01.180398
    

Local fix

Problem summary

  • ****************************************************************
    * USERS AFFECTED:                                              *
    * ALL                                                          *
    ****************************************************************
    * PROBLEM DESCRIPTION:                                         *
    * See Error Description                                        *
    ****************************************************************
    * RECOMMENDATION:                                              *
    * Upgrade to Db2 11.1 Mod 4 Fixpack 5 or higher                *
    ****************************************************************
    

Problem conclusion

  • First fixed in Db2 11.1 Mod 4 Fixpack 5
    

Temporary fix

Comments

APAR Information

  • APAR number

    IT30119

  • Reported component name

    DB2 FOR LUW

  • Reported component ID

    DB2FORLUW

  • Reported release

    B10

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt / Xsystem

  • Submitted date

    2019-08-29

  • Closed date

    2020-01-16

  • Last modified date

    2020-01-16

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

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

    IT30120

Fix information

  • Fixed component name

    DB2 FOR LUW

  • Fixed component ID

    DB2FORLUW

Applicable component levels

  • RB10 PSN

       UP

[{"Business Unit":{"code":"BU058","label":"IBM Infrastructure w\/TPS"},"Product":{"code":"SSEPGG","label":"DB2 for Linux- UNIX and Windows"},"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"11.1","Line of Business":{"code":"LOB10","label":"Data and AI"}}]

Document Information

Modified date:
04 May 2022