PI66358: ABEND0C4 RC4, LOCATION DSNXGRDS DSNXSRME OFFSET00584

Obtain the fix for this APAR.

APAR status

• Closed as program error.

Error description

• ABEND0C4 rc4, location dsnxgrds dsnxsrme OFFSET00584
  (d184537)
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED:                                              *
  * All DB2 12 for z/OS users of queries that require a sort.    *
  ****************************************************************
  * PROBLEM DESCRIPTION:                                         *
  * An ABEND0C4-00000004 can occur at location DSNXSRME+584 when *
  * runtimes thinks sort wants it to complete the sort           *
  * processing when in actuality the final result was placed in  *
  * a physical workfile because on the subsequent execution of   *
  * the same query, no in-memory storage was available to use.   *
  ****************************************************************
  * RECOMMENDATION:                                              *
  ****************************************************************
  An ABEND0C4-00000004 can occur at location DSNXSRME+584 when
  runtimes thinks sort wants it to complete the sort processing
  when in actuality the final result was placed in a physical
  workfile because on the subsequent execution of the same query,
  no in-memory storage was available to use.  This problem may
  occur when on the first invocation of the query, there was
  enough in-memory storage to use and sort sets the access type
  for runtime to complete it.  On the subsequent (or future)
  invocations of the query, for some reason, there is not enough
  in-memory storage for sort or DM to get; it sets bit to say that
  sort is to put the results into a physical workfile and no merge
  phase.  The problem is that sort didn't reset the bit back after
  skipping the merge phase so it can put back the access type back
  to its original value.
  

Problem conclusion

• DB2 has been modified to reset the bit back to its original
  value after merge phase so sort can let runtime reset the proper
  access type if some failure in getting in-memory storage for
  future invocations of the same query.
  

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:

  UI40112

Modules/Macros

• DSNXSORI
  

Fix information

• Fixed component name

  DB2 OS/390 & Z/

• Fixed component ID

  5740XYR00

Applicable component levels

• RC10 PSY UI40112

     UP16/08/18 P F608

Fix is available

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