IBM Support

IT25281: SLOW INSERT PERFORMANCE WHEN USING MON_OBJ_METRICS EXTENDED

Subscribe

You can track all active APARs for this component.

 

APAR status

  • Closed as program error.

Error description

  • Using DB CFG parameter MON_OBJ_METRICS = EXTENDED can lead to
    increased section close times impacting insert/update/delete
    performance
    when there exist many table partitions.
    
    A timed Db2 trace shows quite long gap between sqlricls_complex
    data [probe 1980]  and  [probe 2145], e.g.:
    
         0.000877621   | | | sqlricls_complex entry [eduid 48658
    eduname db2agent]
         0.000878900   | | | sqlricls_complex data [probe 1980]
    
         0.006305744   | | | sqlricls_complex data [probe 2145]
         0.006378330   | | | sqlricls_complex exit
    

Local fix

  • update db cfg for <db> using MON_OBJ_METRICS BASE
    

Problem summary

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

Problem conclusion

  • First fixed in Db2 11.1 Mod 4 Fixpack 4
    

Temporary fix

Comments

APAR Information

  • APAR number

    IT25281

  • 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

    2018-06-06

  • Closed date

    2018-11-27

  • Last modified date

    2018-11-27

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

    IT22261

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

Fix information

  • Fixed component name

    DB2 FOR LUW

  • Fixed component ID

    DB2FORLUW

Applicable component levels

  • RB10 PSN

       UP

[{"Business Unit":{"code":"BU053","label":"Cloud & Data Platform"},"Product":{"code":"SSEPGG","label":"Db2 for Linux, UNIX and Windows"},"Component":"","ARM Category":[],"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"11.1","Edition":"","Line of Business":{"code":"LOB10","label":"Data and AI"}}]

Document Information

Modified date:
27 November 2018