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IC99716: ASSERT FAILURE AND CRASH IN OPLOOKSUBQ DURING PREPARE OF QUERY USING STATEMENT CACHE WHEN BATCHEDREAD_TABLE IS CHANGED

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APAR status

  • Closed as program error.

Error description

  • The prepare of a query involving an expression in the projection
    list may result in an Assert Failure and crash when the query
    has previously been cached in the statement cache and the value
    of BATCHEDREAD_TABLE is dynamically changed, for example by
    using the onmode command. The thread stack shows:
    
    oplooksubq
    oplooksubq
    oplooksubq
    qd_expandviews
    ssc_link
    parsecmd
    sqcmd
    sq_cmnd
    sq_prepare
    sqmain
    listen_verify
    spawn_thread
    th_init_initgls
    startup
    
    The associated SQL is:
    
      SELECT MAX(effectdate) FROM table1
    

Local fix

  • No crash will occur if either the statement cache is not enabled
    or the BATCHEDREAD_TABLE parameter value is not changed
    dynamically.
    

Problem summary

  • ****************************************************************
    * USERS AFFECTED:                                              *
    * 11.70.XCX                                                    *
    ****************************************************************
    * PROBLEM DESCRIPTION:                                         *
    * See Error Description                                        *
    ****************************************************************
    * RECOMMENDATION:                                              *
    * Update to IDS-11.70.xC9                                      *
    ****************************************************************
    

Problem conclusion

  • Problem Fixed In IDS-11.70.xC9
    

Temporary fix

Comments

APAR Information

  • APAR number

    IC99716

  • Reported component name

    INFORMIX SERVER

  • Reported component ID

    5725A3900

  • Reported release

    B70

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt / Xsystem

  • Submitted date

    2014-02-27

  • Closed date

    2017-06-09

  • Last modified date

    2017-06-09

  • 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 PSY

       UP

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Document Information

Modified date:
09 June 2017