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PI90080: ABEND 00C90101 DSNILKES:5007 ON UPDATE USING ROWSET WITH RI

A fix is available

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APAR status

  • Closed as program error.

Error description

  • An UPDATE SQL statement that uses "FOR ROW n OF ROWSET",
    against a parent or child table in a Referential Integrity
    relationship, may abend with a 00C90101 DSNILKES:5007, if
    lock escalation occurs.
    RC00C90101
    MODDSNILKES
    ERQUAL5007
    

Local fix

  • Avoid lock escalation.
    

Problem summary

  • ****************************************************************
    * USERS AFFECTED:                                              *
    * All Db2 11 for z/OS and Db2 12 for z/OS                      *
    * users using ROWSET to access tables with                     *
    * Referential Integrity (RI) relationship.                     *
    ****************************************************************
    * PROBLEM DESCRIPTION:                                         *
    * Lock escalation may fail in DSNILKES                         *
    * with ERQUAL5007 when using ROWSET                            *
    * to access tables with RI relationship.                       *
    ****************************************************************
    * RECOMMENDATION:                                              *
    ****************************************************************
    When using ROWSET to access tables with RI relationship,
    the locks acquired by Db2 for parent and child tables have
    different lock resource names. During lock escalation, Db2
    freed those locks by using their resource names but missed
    those that were acquired by Index Manager. This caused lock
    escalation to fail at DSNILKES:5007
    

Problem conclusion

  • Fixes made in Db2 to make sure all the locks under different
    resource names are released when lock escalation happens.
    

Temporary fix

Comments

APAR Information

  • APAR number

    PI90080

  • Reported component name

    DB2 OS/390 & Z/

  • Reported component ID

    5740XYR00

  • Reported release

    B10

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt / Xsystem

  • Submitted date

    2017-11-09

  • Closed date

    2018-01-04

  • Last modified date

    2018-02-01

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

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

    UI53022 UI53023

Modules/Macros

  • DSNILKES
    

Fix information

  • Fixed component name

    DB2 OS/390 & Z/

  • Fixed component ID

    5740XYR00

Applicable component levels

  • RC10 PSY UI53022

       UP18/01/19 P F801

  • RB10 PSY UI53023

       UP18/01/19 P F801

Fix is available

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Document Information

Modified date:
01 February 2018