PI43650: DFHLD0001 AN ABEND (CODE 0C4/AKEX) HAS OCCURRED AT X'5840' IN MODULE DFHLDLD1.

Obtain the fix for this APAR.

APAR status

• Closed as program error.

Error description

• CEMT SET PROG(xx) NEWCOPY or PHASEIN can fail causing a loop.
  Abends AEXZ and the following message is issued:
  
  DFHLD0001 An abend (code 0C4/AKEX) has occurred at offset
  X'5840' in module DFHLDLD1
  
  .
  Because of the directory entry has been corrupted, wrong
  information can be displayed via the CEMT I PROG.
  

Local fix

• N/A
  

Problem summary

• ****************************************************************
  * USERS AFFECTED: All CICS users.                              *
  ****************************************************************
  * PROBLEM DESCRIPTION: DFHLD0004 (offset x'FFFF') or           *
  *                      DFHLD0001 S0C4 (offset x'5840')         *
  *                      in DFHLDLD1.                            *
  ****************************************************************
  * RECOMMENDATION:                                              *
  ****************************************************************
  An attempt to issue a NEWCOPY or PHASEIN for a program results
  in one of the following errors:
  .
  DFHLD0001 applid AN ABEND (CODE 0C4/AKEX) HAS OCCURRED AT OFFSET
  X'5840' IN MODULE DFHLDLD1.
  DFHLD0004 applid A POSSIBLE LOOP HAS BEEN DETECTED AT OFFSET
  X'FFFF' IN MODULE DFHLDLD1.
  .
  From CICS TS V5.2, control blocks representing the Active
  Program Element are indexed in the LDAD directory in Directory
  Manager domain. The key for elements in this directory is built
  in part using the data set name. An error in the way the data
  set name is derived means that the key is built incorrectly when
  the program is either loaded from the 17th or higher data
  set entry in DFHRPL, or loaded from the LPA. Different attempts
  to build the key may result in a different key. It is therefore
  possible to add an LDAD element to the directory with an invalid
  key. Furthermore, attempts to release the program may fail to
  remove the LDAD entry from the directory.
  .
  In the reported scenario, a program was loaded, released, and
  later loaded again. The latter attempt to acquire the program
  called DDLO LOCATE to find an existing LDAD entry, and
  found one which had been created by the earlier load, and which
  had not been removed when the program was released. The new CPE
  used this APE element, but the storage represented by that APE
  element had now been reused and was no longer a valid APE for
  this program. A subsequent NEWCOPY or PHASEIN request
  attempting to run the CPE-APE chain resulted in either DFHLD0001
  or DFHLD0004.
  .
  Additional Keywords: LD0001 LD0004 msgDFHLD0001 msgDFHLD0004
  S0C4 abendS0C4 LDSU_APE_PTR DDDI DFHDDDI ADD_ENTRY DELETE_ENTRY
  LD_REFRESH LD_ACQUIRE
  PG0506 PGIS Inquire_program_failure INQUIRE_PROGRAM
  

Problem conclusion

• DFHLDLD1, DFHLDLD2, and DFHLDDMI have been updated to ensure
  that the LDAD directory key is built with a valid data set name
  for programs loaded from any DFHRPL data set, or from the LPA.
  They have further been updated with new messages and exception
  trace entries if an attempt to remove an LDAD entry from the
  directory fails.
  .
  .
  The CICS Transaction Server for z/OS V5.2: Trace Entries
  (SC34-7295-00) manual will be updated with the following new
  trace entries in Chapter 20 Loader domain trace points:
  .
  LD 193B DFHLDLD1 Exc  LDAD Delete Failed  1 DDDI Parameter list
                                            2 LDSU parameter list
                                            3 LDLD parameter list
  .
  LD 193C DFHLDLD1 Exc  LDAD Delete Failed  1 DDDI Parameter list
                                            2 LDSU parameter list
                                            3 LDLD parameter list
  .
  LD 290B DFHLDLD2 Exc  LDAD Delete Failed  1 DDDI Parameter list
                                            2 LDLD parameter list
  .
  LD 7955 DFHLDDMI Exc  LDAD Delete Failed  1 DDDI Parameter list
                                            2 LDSU parameter list
                                            3 DMDM parameter list
  

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:

  UI30410

Modules/Macros

• DFHLDDMI DFHLDLD1 DFHLDLD2 DFHLDTRI
  

Fix information

• Fixed component name

  CICS TS Z/OS V5

• Fixed component ID

  5655Y0400

Applicable component levels

• R900 PSY UI30410

     UP15/08/28 P F508  

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.