PK95267: ATND ABEND AT X'0A1E' IN DFHAPRR CAUSES A DFHAP0001/AP0001

Obtain the fix for this APAR.

APAR status

• Closed as program error.

Error description

• When a terminal is lost while being used by a transaction it can
  report this via an ATND or ATNI abend. When the transaction
  involved is being transaction routed via an IPIC connection this
  situation is reported as a rather drastic DFHAP0001 failure and
  an AP0001 system dump is taken:
    DFHAP0001 IPADDDCT An abend (code ---/ATND) has occurred at
  offset X'0A1E' in module DFHAPRR.
    DFHME0116 IPADDDCT  (Module:DFHMEME) CICS symptom string for
  message DFHAP0001 is
    PIDS/5655S9700 LVLS/660 MS/DFHAP0001 RIDS/DFHAPRR PTFS/HCI6600
      AB/UATND RIDS/DFHAPRR ADRS/00000A1E
    DFHDU0201 IPADDDCT ABOUT TO TAKE SDUMP. DUMPCODE: AP0001  ,
  DUMPID: 1/0400
    DFHDU0202 IPADDDCT SDUMPX COMPLETE. SDUMPX RETURN CODE X'00'
  When the transaction involved is being routed over a non-IPIC
  connection the original ATND/ATNI abend is reported in the
  normal manner without any DFHAP0001.
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED: All CICS Users                               *
  ****************************************************************
  * PROBLEM DESCRIPTION: DFHAP0001/AP0001 reported after an ATND *
  *                      abend in DFHAPRR when a terminal        *
  *                      is lost while its transaction is being  *
  *                      routed via an IPIC connection.          *
  ****************************************************************
  * RECOMMENDATION:                                              *
  ****************************************************************
  The recovery code in DFHAPRR was not expecting any sorts of
  abend so it treated all abends as real problems, reporting
  them via the DFHAP0001 message and taking an AP0001 system
  dump. ATND and ATNI abends can mean that the terminal has
  been lost and are not the result of an internal CICS error,
  so do not need to be reported in so drastic a manner.
  Additional keywords: MSGDFHAP0001 abendatni abendatnd sysdump
  

Problem conclusion

• If the DFHAPRR recovery code sees that it has been called for an
  ATND/ATNI abend it will not report these with the DFHAP0001
  processing and will simply percolate the abend to its caller.
  

Temporary fix

• 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:

Modules/Macros

• DESAPRR  DFHAPRR
  

Fix information

• Fixed component name

  CICS TS Z/OS V4

• Fixed component ID

  5655S9700

Applicable component levels

• R600 PSY UK50530

     UP09/10/06 P F910

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.