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IT36408: INSPECT DATABASE COMMAND SLOW BECAUSE OF EXCESSIVE SLEEP WHILE CHECKING OVERFLOW RECORDS

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APAR status

  • Closed as program error.

Error description

  • While checking overflow records, INSPECT may sleep while waiting
    on latches. This sleep is longer than necessary leading to poor
    performance.
    
    Identifying and reorganizing the tables with the most overflows
    will alleviate, but not resolve the problem.
    
    Identify the tables with the most overflow accesses :
    
        SELECT varchar(tabschema,20) as tabschema,
               varchar(tabname,20) as tabname,
               OVERFLOW_ACCESSES
        FROM TABLE(MON_GET_TABLE('','',-2)) AS t
        ORDER BY OVERFLOW_ACCESSES DESC;
    
    and then reorg the tables at the top of the list.
    
        reorg table <schema>.<tables> inplace cleanup overflows;
    

Local fix

Problem summary

  • ****************************************************************
    * USERS AFFECTED:                                              *
    * all                                                          *
    ****************************************************************
    * PROBLEM DESCRIPTION:                                         *
    * See Error Description                                        *
    ****************************************************************
    * RECOMMENDATION:                                              *
    * Upgrade to 11.1.4.7                                          *
    ****************************************************************
    

Problem conclusion

  • Upgrade to 11.1.4.7
    

Temporary fix

Comments

APAR Information

  • APAR number

    IT36408

  • 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

    2021-03-30

  • Closed date

    2022-04-17

  • Last modified date

    2022-04-17

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

    IT36266

  • 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":"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