IC89412: READ STABILITY ISOLATION IS NOT ENFORCED UNDER CERTAIN SQL ACCESS PLANS

DB2 Version 9.7 Fix Pack 8 for Linux, UNIX, and Windows

APAR status

• Closed as program error.

Error description

• In SQL access plans where a table is accessed at least twice,
  the DB2 server might not retain locks required to preserve read
  stability during the entire SQL execution.  Locks might be
  released for rows that satisfy matching criteria on the first
  access, and requested and held later only as the rows are
  retrieved by the application.
  
  Symptoms might include lost updates, duplicate row retrievals
  across applications, and inconsistent results within a
  transaction.
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED:                                              *
  * All users                                                    *
  ****************************************************************
  * PROBLEM DESCRIPTION:                                         *
  * See Error Description                                        *
  ****************************************************************
  * RECOMMENDATION:                                              *
  * Upgrade to DB2 version 9.7.0.8.                              *
  ****************************************************************
  

Problem conclusion

• The problem if first fixed in DB2 version 9.7.0.8.
  

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:

  IC89415 IC89416 IC89934

Modules/Macros

• sqri
  

Fix information

• Fixed component name

  DB2 FOR LUW

• Fixed component ID

  DB2FORLUW

Applicable component levels

• R970 PSN

     UP