PI98986: DFHFC0001 AN ABEND (CODE 0C4/AKEA) HAS OCCURRED AT OFFSET X'D7FA' IN MODULE DFHFCVS.

Obtain the fix for this APAR.

APAR status

• Closed as program error.

Error description

• Your CICS region is running at TS 51. You are receiving
  the following messages,
   DFHFC0001 An abend (code 0C4/AKEA) has occurred
             at offset X'D7FA' in module DFHFCVS.
  
  The failing instruction is in DFHFCVS UI30325 at offset 00D7FA
  R10 is bad, it belongs to another task of its EUDSA Free storage
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED: All CICS users.                              *
  ****************************************************************
  * PROBLEM DESCRIPTION: FC0001 abend in DFHFCVS, accessing      *
  *                      task-level storage which belonged to    *
  *                      a previous task.                        *
  ****************************************************************
  * RECOMMENDATION: .                                            *
  ****************************************************************
  A CICS transaction is purged while in VSAM WAIT_MVS.
  The transaction enters HANDLE ABEND processing which issues
  EXEC CICS SYNCPOINT.
  DFHFCVR puts the address of the the task's File Control SET
  storage (which is task-level storage) into a File Control
  FC_BUFFER_BASE FCPH_CHAIN element (which is a chain of shared
  region-level storage).
  Later, another transaction takes the address from the
  FC_BUFFER_BASE FCPH_CHAIN and suffers an 0C4 abend.
  Additional Keywords: DFHFC0001 FC0001 FCSS SET
                       FCB_256 FCB_512 FCB_1K  FCB_2K
                       FCB_4K  FCB_8K  FCB_16K FCB_32K
                       FCB_64K FCB_128 FCB_256 FCB_512
                       FCB_1M  FCB_2M  FCB_4M  FCB_8M FCB_16M
  

Problem conclusion

• DFHFCFR has been changed to prevent it from putting task-level
  storage onto the region-level chain.
  

Temporary fix

Comments

• ×**** PE18/07/16 FIX IN ERROR. SEE APAR PH00551  FOR DESCRIPTION
  

APAR Information

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

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

  UI56669 UI56670 UI56671 UI56672

Modules/Macros

• DFHFCFR
  

Fix information

• Fixed component name

  CICS TS Z/OS V5

• Fixed component ID

  5655Y0400

Applicable component levels

• R000 PSY UI56670

     UP18/06/20 P F806

• R100 PSY UI56671

     UP18/06/20 P F806

• R800 PSY UI56669

     UP18/06/20 P F806

• R900 PSY UI56672

     UP18/06/23 P F806

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.