PK53634: DFHSM0002 SEVERE ERROR 0D0A IN MODULE DFHSMMF DOUBLE FREEMAIN ISSUED BY DFHXTP TRANSFORMER 4 INVALID_TP_STORAGE_ADDRESS

Obtain the fix for this APAR.

APAR status

• Closed as program error.

Error description

• Your TOR region receives the following error:
  DFHSM0002 A severe error (code X'0D0A') has occurred in
            module DFHSMMF
  Module DFHXTP offset x'9cc' is issuing the freemain for this
  storage, retrieving the address from field: TCATPTA
  Here is the failing trace entry:
  SM 0D0A SMMF  *EXC* - Invalid_TP_storage_address
     FUNCTION(FREEMAIN) ADDRESS(1888A0A0) TCTTE_ADDRESS(18F73030)
  After this, they have also seen an ABENDAKEC in module DFHALP.
  

Local fix

Problem summary

• ****************************************************************
  * USERS AFFECTED: All.                                         *
  ****************************************************************
  * PROBLEM DESCRIPTION: DFHSM0002 severe error code 0D0A        *
  *                      in DFHSMMF.                             *
  ****************************************************************
  * RECOMMENDATION:                                              *
  ****************************************************************
  A transaction received on an LU62 session is routed via MRO
  to an AOR. DFHXTP transformer 4 on the routing system checks
  to see if TCSE_SYSTEM_SUPPORTS_TIMEOUT in the TCSE for the
  remote link to the AOR matches that indicated by FMHXTOS in
  the FMH received from the AOR. These flags indicate whether
  the remote terminal delete timeout system, introduced in
  CICS/ESA Version 4 Release 1, is supported by the remote
  system.
  If the flags do not match, the TCSE is updated to reflect the
  setting from the FMH and the change is cataloged.
  In setting up the catalog request, DFHXTP sets TCATPTA to
  the address of the TCSE. However, following the catalog a
  getmain for TIOA storage for the user TCTTE may be performed.
  This assumes that the address of the user TCTTE (from XTSATTEU)
  will be in TCATPTA. Instead we still have the address of the
  TCSE.
  As a result of this, a TIOA is getmained for the wrong TCTTE
  and part of the TCSE is overlaid. When DFHXTP later attempts to
  free the TIOA, using the correct TCTTE address, DFHSM0002, a
  severe error in DFHSMMF, occurs.
  It is unlikely that this error will occur as any CICS system
  at level CICS/ESA Version 4 Release 1 and above should
  support the remote delete timeout mechanism, so DFHXTP should
  not be required to change TCSEDII3 and catalog the change
  unless a pre-410 AOR is involved. It is suspected that in this
  case there was no pre-410 AOR but that an overlay of the FMH
  may have led to this problem, caused by a previous abend.
  Additional keywords: AXTG abendAXTG FMHXTOS XFORM4 XTP
                       msgDFHSM0002 SM0002
  

Problem conclusion

• DFHXTP has been altered to restore the correct user TCTTE
  address into TCATPTA following the catalog request in
  transformer 4.
  

Temporary fix

• FIX AVAILABLE BY PTF ONLY
  

Comments

APAR Information

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

  PK41410

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

  UK29879

Modules/Macros

•    DFHXTP
  

Fix information

• Fixed component name

  CICSTS V3 Z/OS

• Fixed component ID

  5655M1500

Applicable component levels

• R400 PSY UK29879

     UP07/10/12 P F710

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.