PK83078: LOG UPDATES LOST DURING REORG UTILITY WHEN RUN DURING CONVERSION TO NEW FUNCTION MODE (NFM)

Obtain the fix for this APAR.

APAR status

• Closed as program error.

Error description

• SQL INSERTs, UPDATEs, or DELETEs during REORG SHRLEVEL(CHANGE)
  Utility on a user tablespace are lost.  Messages for the LOG
  phase of the REORG showed that no log records were applied.
  ..
  This problem can occur if the REORG is running during or
  immediately following the conversion to New Function Mode for
  a non-data sharing system.
  ..
  The problem could also occur for REORG TABLESPACE PART n
  SHRLEVEL REFERENCE if all non-partitioning indexes have the
  COPY YES attribute, or for REBUILD INDEX SHRLEVEL CHANGE.
  
  DB2INCORR/K
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED: All DB2 9 for z/OS users of the REORG        *
  *                 SHRLEVEL CHANGE or REBUILD SHRLEVEL          *
  *                 CHANGE utilities in non-data sharing.        *
  ****************************************************************
  * PROBLEM DESCRIPTION: Log records not applied during REORG    *
  *                      SHRLEVEL CHANGE or REBUILD SHRLEVEL     *
  *                      CHANGE in a non-data sharing            *
  *                      environment if the current RBA is       *
  *                      higher than the current store clock     *
  *                      value and new function mode (NFM) is    *
  *                      entered while the REORG or REBUILD are  *
  *                      running.                                *
  ****************************************************************
  * RECOMMENDATION: Apply corrective PTF when available.         *
  ****************************************************************
  In a non-data sharing environment, if the current RBA is higher
  than the current system clock value, and new function mode (NFM)
  is enabled while a REORG SHRLEVEL CHANGE, REORG SHRLEVEL
  REFERENCE (when it has a LOG phase), or REBUILD SHRLEVEL CHANGE
  job is running, a change in the data stored in SYSLGRNX records
  triggered by NFM might cause the REORG or REBUILD log apply
  phases to miss log records.  This could cause missing records in
  the table space being reorganized, or a corruption in the index
  being rebuilt.
  
  Similar problems could occur when falling back to ENFM* or CM*
  from NFM.
  

Problem conclusion

• REORG and REBUILD have been modified to correctly read SYSLGRNX
  records even if NFM is enabled while they are running, and
  thus to read all required log records.
  

Temporary fix

• *********
  * HIPER *
  *********
  

Comments

APAR Information

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

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

  UK45764

Modules/Macros

• DSNUCLOG DSNURLOG
  

Fix information

• Fixed component name

  DB2 OS/390 & Z/

• Fixed component ID

  5740XYR00

Applicable component levels

• R910 PSY UK45764

     UP09/04/30 P F904

Fix is available

• Select the PTF appropriate for your component level. You will be required to sign in. Distribution on physical media is not available in all countries.