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

Obtain the fix for this APAR.

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 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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