PH24575: DFHFC0001 ABEND 0C1/AKEA DFHFCVR

Obtain the fix for this APAR.

APAR status

• Closed as program error.

Error description

• DFHFC0001 Abend 0C1/AKEA in module DFHFCVR. File status is
  close enable
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED: All CICS users.                              *
  ****************************************************************
  * PROBLEM DESCRIPTION: Abend0C1 branch to address 0 from       *
  *                      DFHFCFR when processing application     *
  *                      EXEC CICS WRITE to an empty VSAM file.  *
  ****************************************************************
  A CICS application transaction is performing EXEC CICS WRITE
  to an empty VSAM file.
  This causes CICS File Control to enter VSAM Load Mode
  processing to populate the file.
  The transaction suspends. In the reported case, the suspend
  is in an XFCSREQC Global User Exit.
  If another transaction attempts to do EXEC CICS WRITE to
  the same file then that transaction also enters VSAM
  Load Mode processing.
  A conflict occurs between the two transactions and the
  file OPEN and CLOSE state.
  The first transaction attempts to write to the file
  when the second transaction has it closed for Load Mode
  processing.
  The first transaction calls VSAM using an address pointer
  called VSAMADDR - but that address is zero, so an 0C1
  abend occurs.
  Additional Keywords: LOAD_MODE_CLOSED AbendAEIS Glue
  

Problem conclusion

• DFHFCFS has been modified to detect the file state conflict
  and return FCFS_EXCEPTION and FCFS_LOAD_MODE_CLOSED to DFHFCFR.
  DFHFCFR has been changed to detect the FCFS_LOAD_MODE_CLOSED
  situation and make a second call to OPEN_FILE.
  The conflict situation will no longer exist in the second
  OPEN_FILE (because the other transaction will have completed
  its Load Mode processing) and the second OPEN_FILE will
  succeed.
  In the unlikely event that the second OPEN_FILE should fail,
  DFHFCFR will return a NOTOPEN response to the application.
  If the NOTOPEN condition is not handled then the application
  transaction will abend AEIS.
  .
  Two new exception trace points are added by this PTF to DFHFCFR:
  .
  Point ID  Module   Lvl   Type                Data
  --------  -------  ----  ------------------  -------------------
  AP 04EB   DFHFCFR  Exc   Trying Second Open  FCFR Parameter List
  AP 04EC   DFHFCFR  Exc   Second Open Failed  FCFR Parameter List
  

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:

  UI70427 UI70428 UI70429

Modules/Macros

• DFHAPTR5 DFHFCFR  DFHFCFS  DFHFCFST
  

Fix information

• Fixed component name

  CICS TS Z/OS V5

• Fixed component ID

  5655Y0400

Applicable component levels

• R100 PSY UI70427

     UP20/07/21 P F007

• R200 PSY UI70429

     UP20/07/09 P F007

• R300 PSY UI70428

     UP20/07/09 P F007

Fix is available

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