PM82268: ABEND0C4 DSNB1DCM OR DSNB1RLS

Obtain the fix for this APAR.

APAR status

• Closed as program error.

Error description

• DBT2,ABND=0C4-00000038,U=SP000   ,M=C9 ,C=101.DMC
  -DSNIDALC,M=DSNTFRCV,LOC=DSNIDM  .DSNB1DCM+1680
  
  
  DBT2,ABND=0C4-00000038,U=SP000   ,M=C9 ,C=101.BMC
  -DSNB1RLS,M=DSNTFRCV,LOC=DSNIDM  .DSNB1RLS+04C2
  The abend0c4 occurs due to an overlayed PBA0.
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED: DB2 users.                                   *
  ****************************************************************
  * PROBLEM DESCRIPTION: ABEND0C4 in DSNB1RLS or DSNB1DCM.       *
  ****************************************************************
  * RECOMMENDATION:                                              *
  ****************************************************************
  Abends are due to a residual PBA0 control block being left on
  the read-lsn chain for a scrollable cursor.  If the read-lsn is
  registered with no read claim held - or if it is registered for
  a partition when the agent holds a tablespace-level drain - the
  block will not be found at commit time and removed from the
  chain.  Once the block has been freed and reused, its presense
  on the read-lsn chain can result in an ABEND0C4 in DSNB1DCM or
  DSNB1RLS.
  

Problem conclusion

• The read-lsn registration code has been modified to ensure
  that the PBA0 block is correctly chained.
  

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:

  UK92801

Modules/Macros

• DSNB1RLS
  

Fix information

• Fixed component name

  DB2 OS/390 & Z/

• Fixed component ID

  5740XYR00

Applicable component levels

• RA10 PSY UK92801

     UP13/04/09 P F304

Fix is available

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