PH69168: ABEND0C4 IN DFHPGCH + X'1EF4'

Obtain the fix for this APAR.

APAR status

• Closed as program error.

Error description

• The customer added some new functionality to an XICEREQ
  exit to ensure that certain EXEC CICS START requests are
  bypassed. After deploying the amended exit they encountered
  an abend0C4 at x'1EF4' in DFHPGCH. This is due to register 4,
  which should contain a pointer to the CHCB_EYECATCHER, being
  corrupt.
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED: All CICS Users.                              *
  ****************************************************************
  * PROBLEM DESCRIPTION: ABEND0C4 in DFHPGCH when a CICS         *
  *                      XICEREQ GLUE sets UERCBYP to bypass     *
  *                      an EXEC CICS START TRANSID command.     *
  ****************************************************************
  An application program issues EXEC CICS START TRANSID()
  and has an XICEREQ Global User Exit (GLUE) active.
  If the XICEREQ GLUE returns a return code of UERCBYP
  to CICS, requesting that the command should be bypassed
  then CICS can incorrectly call DFHPGCH with an invalid
  Channel_Token, leading to the 0C4 abend. The invalid channel
  token value was the result of residual TCA data from a previous
  BMS command.
  Additional Keywords: FFFFFFFF FFFFFFFE TCZICITK BMS
  

Problem conclusion

• CICS has been changed to prevent an 0C4 in DFHPGCH
  when an XICEREQ GLUE returns UERCBYP.
  

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:

  UO06939 UO06940 UO06941

Modules/Macros

• DFHEIIC
  

Fix information

• Fixed component name

  CICS TS Z/OS V6

• Fixed component ID

  5655YA100

Applicable component levels

• R400 PSY UO06941

     UP26/02/26 P F602

• R500 PSY UO06940

     UP26/03/06 P F603

• R600 PSY UO06939

     UP26/02/26 P F602

Fix is available

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