PM24370: DFHAP0001 AN ABEND (CODE 0C4/AKEA) HAS OCCURRED AT OFFSET X'000033FC' IN MODULE DFHXTP.

Obtain the fix for this APAR.

APAR status

• Closed as program error.

Error description

• You have an AOR/TOR environment. The TOR taks an SVC dump with
  an AZI9 abend in module DFHAPCR at offset x'3DB2'. This is
  followed by the AOR issuing a DFHSR0622 message followed by an
  0C4 abend in module DFHXTP. The AOR then begins to take repeated
  dumps and eventually abends.
  Upon review of the dump, you find that the failing instruction
  is an 0EE0. This is a move character long. Reg1 and RegF are
  being used as the length and are negative. When the data moves
  into storage which is protected, the 0C4 happens. The problem is
  due to the negative lengths on the MVCL instruction.
  Additional Symptoms:ABEND0C4 3DB2transformer
  KIXREVSCB
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED: All CICS Users                               *
  ****************************************************************
  * PROBLEM DESCRIPTION: Messages, DFHSR0622 An attempt to       *
  *                      overwrite the ERDSA has caused the      *
  *                      abend which follows; DFHAP0001 An abend *
  *                      (code 0C4/AKEA) has occurred at offset  *
  *                      X'000033FC' in module DFHXTP.           *
  ****************************************************************
  * RECOMMENDATION:                                              *
  ****************************************************************
  A transaction routing request is received in an AOR with a
  CHANNEL that is greater than 32K in length.
  During transaction initialization, DFHXTP calls DFHAPCR
  IMPORT_ALL to unwrap the CHANNEL data.
  DFHAPCR IMPORT_ALL returns an EXCEPTION response with a
  reason TERMINAL_ERROR because the MRO communication with the
  TOR has been lost.
  The error is handled correctly by DFHXTP which then attempts
  to return to the calling module, DFHZTSP, by branching to label
  ALLDONE.
  Label ALLDONE is part of CSECT XFORM24E which uses register 9
  as a base register.
  The CHANNEL upwrap routine, CDEARGCH_EXT, is part of CSECT
  XF24ARGE which also uses register 9 as a base register.
  When CDEARGCH_EXT branch to label ALLDONE, register 9 is not
  re-loaded with the base address of CSECT XFORM24E. This causes
  an incorrect path code in DFHXTP to be taken and messages
  DFHSR0622 and DFHAP0001 to be issued.
  

Problem conclusion

• Routine CDEARGCH_EXT in DFHXTP has been changed to re-load
  register 9 with the base address of CSECT XFORM24E before
  branching to label ALLDONE after DFHAPCR has returned an
  EXCEPTION response with a reason code of TERMINAL_ERROR.
  

Temporary fix

•             *********
              * HIPER *
              *********
  FIX AVAILABLE BY PTF ONLY
  

Comments

APAR Information

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

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

  PM26902 UK62750

Modules/Macros

•    DFHXTP
  

Fix information

• Fixed component name

  CICSTS V3 Z/OS

• Fixed component ID

  5655M1500

Applicable component levels

• R500 PSY UK62750

     UP10/12/07 P F012

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.