IBM Support

IT29876: DB2 MIGHT CRASH WITH SQLRICLS_COMPLEX -> XMLRNHASHTABLE::DEALLOCATE() ON THE STACK PROCESSING XML QUERY

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APAR status

  • Closed as program error.

Error description

  • Db2 might crash with sqlricls_complex ->
    XmlrnHashtable::deallocate() on the stack processing XML query
    
    Under rare timing condition, Db2 might crash at the end of XML
    query processing (closing runtime section) with SEGV in the
    following stack
    
    sqlofmblkEx
    XmlrnHashtable::deallocate
    sqlricls_complex
    
    mem_diagnostics.txt file, produced during FODC processing, will
    indicate a corruption in the private heap:
    
    ...
    Pool ID: 88 (Private Heap - private)
    ...
    

Local fix

Problem summary

  • ****************************************************************
    * USERS AFFECTED:                                              *
    * ALL                                                          *
    ****************************************************************
    * PROBLEM DESCRIPTION:                                         *
    * See Error Description                                        *
    ****************************************************************
    * RECOMMENDATION:                                              *
    * Upgrade to Db2 11.1 Mod 4 Fixpack 5 or higher                *
    ****************************************************************
    

Problem conclusion

  • First fixed in Db2 11.1 Mod 4 Fixpack 5
    

Temporary fix

Comments

APAR Information

  • APAR number

    IT29876

  • 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

    2019-07-30

  • 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

  • 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:
20 January 2020