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IT28228: DB2 MAY ABEND ON A QUERY THAT CONTAINS A COLUMNAR FETCH-INDEX SCAN THAT RUNS OUT OF APPLICATION HEAP

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APAR status

  • Closed as fixed if next.

Error description

  • On a plan that contains a columnar fetch-index scan, db2 can
    abend if the instance runs out of application heap with this
    stack:
    
    4        sqloEDUCodeTrapHandler
    5        __restore_rt
    6        cdeInterface::isColumnHot
    7        sqlriCdeFFVPrefetchPages
    8        sqlriCdeFastFetchVector
    

Local fix

  • apply latest fixpack or:
    db2set -im DB2_REDUCED_OPTIMIZATION="COL_IXSCAN_ALL_V1133 OFF"
    at the cost of performance for certain queries
    

Problem summary

  • ****************************************************************
    * USERS AFFECTED:                                              *
    * all, serial and dpf                                          *
    ****************************************************************
    * PROBLEM DESCRIPTION:                                         *
    * See Error Description                                        *
    ****************************************************************
    * RECOMMENDATION:                                              *
    * install latest fixpack                                       *
    ****************************************************************
    

Problem conclusion

Temporary fix

Comments

APAR Information

  • APAR number

    IT28228

  • Reported component name

    DB2 FOR LUW

  • Reported component ID

    DB2FORLUW

  • Reported release

    A10

  • Status

    CLOSED FIN

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt / Xsystem

  • Submitted date

    2019-02-26

  • Closed date

    2020-01-20

  • Last modified date

    2020-01-20

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

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

Fix information

Applicable component levels

[{"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":"10.1","Edition":"","Line of Business":{"code":"LOB10","label":"Data and AI"}}]

Document Information

Modified date:
20 January 2020