IC91338: SELECT COUNT(*) CAN LEAD TO AF IN LDDBLNULL WHEN USING NESTED SUBQUERIES AND AN INDEXED DATE COLUMN

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APAR status

  • Closed as program error.

Error description

  • An AF with the following stack can occur with count(*) in nested
    subqueries and an indexed date column:
    
    afstack
    mt_ex_throw_sig
    afsig_handler
    (Linux) <signal frame>
    lddblnull
    rdatavalFloat
    valload
    geval
    evalcols
    filltemp
    scan_open
    materialize_viewtmp
    materialize_viewtmp
    materialize_viewtmp
    materialize_viewtmp
    prepselect
    open_cursor
    sql_open
    sq_open
    sqmain
    spawn_thread
    startup
    

Local fix

Problem summary

  • ****************************************************************
    * USERS AFFECTED:                                              *
    * All 11.70 users.                                             *
    ****************************************************************
    * PROBLEM DESCRIPTION:                                         *
    * A query involving views or derived tables may have assertion *
    * failure under the following conditions:                      *
    *   - the view or derived table is materialized into a temp    *
    * table                                                        *
    *   - the view or derived table contains a count(*) query      *
    *   - only a single table is involved, and all predicates in   *
    * the where clause can be satisfied with a single index scan   *
    *   - multi-index scan with skip scan is used to calculate the *
    * count(*) for the view query                                  *
    ****************************************************************
    * RECOMMENDATION:                                              *
    * Update to IDS-11.70.xC8                                      *
    ****************************************************************
    

Problem conclusion

  • Problem Fixed In IDS-11.70.xC8
    

Temporary fix

Comments

APAR Information

  • APAR number

    IC91338

  • Reported component name

    INFORMIX SERVER

  • Reported component ID

    5725A3900

  • Reported release

    B70

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt

  • Submitted date

    2013-04-04

  • Closed date

    2014-02-26

  • Last modified date

    2014-02-26

  • 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

    INFORMIX SERVER

  • Fixed component ID

    5725A3900

Applicable component levels

  • RB70 PSN

       UP



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Document information


More support for:

Informix Servers

Software version:

B70

Reference #:

IC91338

Modified date:

2014-02-26

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