PM26753: ABEND0C4 RC00000010 FROM DSNSVBK AT OFFSET1152 WITH MINSTOR ON. DB2 TERMINATED WITH RC00D94001

Obtain the fix for this APAR.

APAR status

• Closed as program error.

Error description

• ABEND0C4 RC00000010 from DSNSVBK at OFFSET1152 with MINSTOR on.
  DB2 terminated with RC00D94001.  RC10
  ABEND0D6 RC00000027 RC27
  

Local fix

• Turn MINSTOR = off
  

Problem summary

• ****************************************************************
  * USERS AFFECTED: All DB2 V9 and V10 users.                    *
  ****************************************************************
  * PROBLEM DESCRIPTION: DB2 ABEND04E RSN00D94001 after batch    *
  *                      job ABEND322 resulting in ABEND13E      *
  *                      while in DSNSVBK.  The recovery FRR     *
  *                      failed to restore integrity to the      *
  *                      pool free chains and length values,     *
  *                      such that the thread ABEND0C4s in       *
  *                      DSNSVBK during MUST COMPLETE cleanup    *
  *                      processing.                             *
  ****************************************************************
  * RECOMMENDATION:                                              *
  ****************************************************************
  DB2 system terminates when the MUST COMPLETE thread abort
  termination processing receives an ABEND0C4 trying to free
  storage in a pool which had earlier been used by a timed out
  batch job.  The batch job was processing in DSNSVBK when the
  detach occurred during variable pool chain manipulation, leaving
  the chains corrupted.  The FRR attempted to restore integrity to
  the pool unsuccessfully and DB2 continued abort termination.
  During that process, an attempt was made to free the aborted
  thread's storage, resulting in ABEND0C4 in DSNSVBK which brought
  DB2 down since this was MUST COMPLETE.
  This problem may occur for any type of MVS CANCEL or ABENDx22
  timeout depending on where the execution is at that point.
  

Problem conclusion

• The tracking and recovery code in the 31bit variable pool
  storage code and its FRR has been reworked to provide the
  necessary information for proper recovery.  New tracking
  information is added while manipulating the variable chains such
  that order can be restored if the thread is hit by MVS CANCEL,
  TIMEOUT ABENDx22, or other MVS abend.
  

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:

  UK64172 UK64173

Modules/Macros

• DSNDSKB  DSNSRSUP DSNSSTKE DSNSVBK
  

Fix information

• Fixed component name

  DB2 OS/390 & Z/

• Fixed component ID

  5740XYR00

Applicable component levels

• RA10 PSY UK64172

     UP11/02/10 P F102

• R910 PSY UK64173

     UP11/02/10 P F102

Fix is available

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