PH50576: DURING STARTUP DFHPA0001 AN ABEND (CODE 0C4/AKEA) HAS OCCURRED AT OFFSET X'0408' IN MODULE DFHPAIT

Obtain the fix for this APAR.

APAR status

• Closed as program error.

Error description

• During startup of your CICS TS 6.1 region, you receive the
  following messages:
  
  EYUNL0099I applid LMAS LRT initialization complete.
  
  DFHPA0001 applid An abend (code 0C4/AKEA) has occurred at
            offset X'0408' in module DFHPAIT.
  
  DFHKE0201 applid ABOUT TO TAKE SDUMP. DUMPCODE: KERNDUMP,
            DUMPID: 0/0000. (MODULE DFHKEDD ).
  .
  Reviewing the dump from the AP0001, the failing transaction
  is CONL.  CICS trace shows this task, program EYU9NA01 has
  issued command:  EXEC CICS INQUIRE TAG
  
  Going to the PA domain in the dump, you will can see the
  following error message with regards to the Parameter
  Domain Anchor Block:
   ** DFHPD0101  Pointer to TAGHDR at offset 00BC is invalid.
  
  This is simliar to APAR PH48585. The tag file has not
  yet been processed, so there are x'40's in the TAGHDR field.
  
  Additional symptoms: KIXREVGJT
  abend0C4 0C4 CPSM PLT initialization start up TAG
  SPI System Command
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED: All CICS users.                              *
  ****************************************************************
  * PROBLEM DESCRIPTION: If a PLT program attempts to browse     *
  *                      region tags from cicstags.yaml at       *
  *                      CICS startup, CICS may abend 0C4 in     *
  *                      DFHPAIT.                                *
  ****************************************************************
  PLT programs may be executed by CICS at startup before the
  cicstags.yaml is read, therefore any attempt to browse
  region tags can result in an S0C4 abend in DFHPAIT because the
  default address for the CICS tags has been initialised as all
  spaces, '40404040'X, which addresses storage that has not been
  getmained.
  

Problem conclusion

• DFHPAIT has been updated so it does not abend if cicstags.yaml
  has not yet been read and region tags are not available. Upon a
  TAG READNEXT request DFHPAIT will now return the END condition
  which the calling program should handle.
  
  For information:
  Any attempt to read region tags should occur after JESYSMSG has
  displayed the following message:
  DFHPA2102I APPLID Reading CICS tagging file: filename.
  

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:

  UI83827

Modules/Macros

• DFHPAIT
  

Fix information

• Fixed component name

  CICS TS Z/OS V6

• Fixed component ID

  5655YA100

Applicable component levels

• R400 PSY UI83827

     UP22/12/22 P F212

Fix is available

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