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IT26621: UNDER RARE CIRCUMSTANCES, DB2 MAY ABEND WHEN A QUERY CONTAINS ANEXPRESSION THAT CAN BE MATCHED TO AN INDEXED EXPRESSION

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APAR status

  • Closed as program error.

Error description

  • Under rare circumstances, Db2 may abend when a query contains an
    expression that can be matched to an indexed expression.
    
    Here is an example of the stack:
    
    Stack #1             Signal #5
          sqlnq_mch::getMatchingExprCol
          sqlng_build_SQLD_VALS_obj
          sqlng_build_TA_op
          sqlng_process_f_iscan
          sqlng_process_fetch_op
          sqlngProcessLolepop
          sqlng_process_sort_op
          sqlngProcessLolepop
          sqlng_build_thread
          sqlng_scan_derived_table
          sqlng_process_scan_op
          sqlngProcessLolepop
          sqlng_process_mate_op
          ...
          sqlng_scan_derived_table
          sqlng_process_scan_op
          sqlngProcessLolepop
          sqlng_process_mate_op
          sqlngProcessLolepop
          sqlng_process_pipe_op
          sqlngProcessLolepop
          sqlng_process_return_op
          sqlngProcessLolepop
          sqlng_build_thread
          sqlng_main
          sqlnn_cmpl
          sqlnn_cmpl
          sqlra_compile_var
    

Local fix

Problem summary

  • ****************************************************************
    * USERS AFFECTED:                                              *
    * ALL                                                          *
    ****************************************************************
    * PROBLEM DESCRIPTION:                                         *
    * See Error Description                                        *
    ****************************************************************
    * RECOMMENDATION:                                              *
    * Upgrade to Db2 v11.1 m4fp4 or later                          *
    ****************************************************************
    

Problem conclusion

  • Upgrade to Db2 v11.1 m4fp4 or later
    

Temporary fix

Comments

APAR Information

  • APAR number

    IT26621

  • 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

    2018-10-15

  • Closed date

    2018-11-27

  • Last modified date

    2018-11-27

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

  • 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