IBM Support

IT31115: DB2 MAY HANG WHEN DATABASE IS CONFIGURED WITH SMALL LOCKLIST andDB2_KEEPTABLECOUNT=CONNECTION IS USED

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APAR status

  • Closed as fixed if next.

Error description

  • Operations on the database may hang during commit or rollback
    processing when the DB2_KEEPTABLECOUNT register variable is set
    to CONNECTION, and the database configuration parameter LOCKLIST
    is set to a value smaller than 8000.
    
    Below is a sample stack of the agent:
    
    #0  0x00007fc44e00ebb8 in sqlpUnlatchTransChain(sqeBsuEdu*,
    SQLP_LTRN_CHAIN*, unsigned long, unsigned long) () from
    /home/db2inst1/sqllib/lib64/libdb2e.so.1
    #1  0x00007fc44e0b8e04 in sqlplrm(sqeAgent*) () from
    /home/db2inst1/sqllib/lib64/libdb2e.so.1
    #2  0x00007fc44e01db12 in sqlpxcm1(sqeAgent*, SQLXA_CALL_INFO*,
    int) () from /home/db2inst1/sqllib/lib64/libdb2e.so.1
    

Local fix

  • Increase the LOCKLIST database configuration parameter to 8000
    or greater, or unset DB2_KEEPTABLECOUNT register variable.
    

Problem summary

  • ****************************************************************
    * USERS AFFECTED:                                              *
    * All                                                          *
    ****************************************************************
    * PROBLEM DESCRIPTION:                                         *
    * See Error Description                                        *
    ****************************************************************
    * RECOMMENDATION:                                              *
    * Upgrade to db2 version 11.1.4.6                              *
    ****************************************************************
    

Problem conclusion

Temporary fix

Comments

APAR Information

  • APAR number

    IT31115

  • Reported component name

    DB2 FOR LUW

  • Reported component ID

    DB2FORLUW

  • Reported release

    B10

  • Status

    CLOSED FIN

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt / Xsystem

  • Submitted date

    2019-11-29

  • Closed date

    2021-07-13

  • Last modified date

    2021-07-13

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

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

    IT31116

Fix information

Applicable component levels

[{"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":"11.1"}]

Document Information

Modified date:
14 July 2021