PH67178: DFHFC0002 A severe error (code x'042A') has occurred in module DFHFCTDS after 6.2 update

Obtain the fix for this APAR.

APAR status

• Closed as program error.

Error description

• CICS puts out message DFHFC0002 A severe error (code X'042A')
  has occurred in module DFHFCDTS. The trace entry created by this
  error shows a SDTS-FAILED READ_INTO running on an L8 tcb. In
  data area 2, the third and fourth bytes of the first word are
  x'0215', which indicates an invalid token. The first byte of the
  second word is x'09', which means DTQ_NOT_PROGRAM_CALL EQU 9
  (Not running as a PC routine)
  
  Additional Symptom(s) Search Keyword(s):
  DFHFC0002 A severe error (code X'042A')
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED: All CICS Users.                              *
  ****************************************************************
  * PROBLEM DESCRIPTION: With threadsafe shared data-tables at   *
  *                      CICS TS 6.2, two tasks can attempt to   *
  *                      access the file at the same time        *
  *                      leading to one task issuing a severe    *
  *                      error x'042A' in module DFHFCDTS.       *
  ****************************************************************
  Certain Shared Data-table requests are now threadsafe in CICS TS
  6.2. This increases the chances that two tasks will attempt to
  access the SDT file at the same time. When this occurs, the
  second task is expected to retry the request in case the first
  one has updated the required record. The retry code can
  incorrectly point a task to retry using module DFHDTSR rather
  than DFHDTRE leading to CICS entering the wrong module for
  retry and message DFHFC0002 being issued.
  

Problem conclusion

• DFHDTRE and DFHDTRM have been altered to ensure CICS remembers
  if an SDT request came into DFHDTRM from DFHDTRE. To do this new
  flag DTP_FROM_DTRE has been created in DSECT DFHDTPDS.
  

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:

  UO06035 UO06036

Modules/Macros

• DFHAPTRE DFHDT64M DFHDTCF  DFHDTCV  DFHDTDA  DFHDTDC  DFHDTDM
  DFHDTINS DFHDTIX  DFHDTLA  DFHDTLI  DFHDTLX  DFHDTRC  DFHDTRE
  DFHDTRI  DFHDTRM  DFHDTRR  DFHDTSR  DFHDTSS  DFHDTST  DFHDTSVS
  DFHDTUP  DFHDTXS  DFHFCDO  DFHFCDTS DFHFCFS  DFHFCN   DFHFCRC
  DFHFCRO  DFHFCST  DFHFCVS
  

Fix information

• Fixed component name

  CICS TS Z/OS V6

• Fixed component ID

  5655YA100

Applicable component levels

• R500 PSY UO06036

     UP25/12/06 I 1000 ¢

• R600 PSY UO06035

     UP25/12/06 I 1000 ¢

Fix is available

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