PI97141: DFHME0001 AN ABEND CODE 0C4/AKEA AT OFFSET X'03D30' IN MODULE DFHMEME

Obtain the fix for this APAR.

APAR status

• Closed as program error.

Error description

• The program check occurs at offset x'3D2E' on an MVCL
  instruction in DFHMEME.  The failing transaction has
  experienced an AZI6 abend, and is in the process of
  backing out, and attempting to put out a very large message.
  DFHTFP is calling DFHMEME with the parameter list to put
  out message DFHAC2236.
  .
  Here is the message attempting to be written out:
  DFHAC2262 04/11/2018 12:53:14 CICSREG1 System SYS1 sent
           message (sense code 0824089E). DFHAC2206 12:53:14
           CICSREG2 Transaction TRAN failed with abend AZI6.
           Updates to local recoverable resources backed out.
           DFHAC2261 System SYS2 sent message (sense code
           0824089E). 'DFHAC2206 12:53:14 CICSREG3 Transaction
           TRAN failed with abend AZI6. Updates to local
           recoverable resources backed out. DFHAC2261 System
           SYS3 sent message (sense code 0824089E). 'DFHAC2206
           12:53:14 CICSREG4 Transaction TRAN failed  with
           abend AZI6. Updates to local recoverable resources
           backed out. DFHAC2261 System SYS4 sent message
           (sense code 0824089E). 'DFHAC2206 12:53:14 CICSREG5
           Tran saction TRAN failed with abend AZI6. Updates to
           local recoverable resources backed out. DFHAC2261
           System SYS6 sent message (sense code 0824089E).
           'DFHAC2206 12:53:14 CICSREG6 Transaction TRAN failed
           with abend AZT3. Updates to local recoverable
           resources backed out.'.'.'.'...............
  .
  DFHMEME getmains MVS storage at offset x'2826' requesting EA6
  bytes of storage, which MVS rounds up to EA8 as seen in system
  trace:
  --------------------------------------------------------------
  PC   ... 8       00_36EBA45B     0030B          Storage Obtain
  SSRV 132   00000000  40008370 00000EA8 371FB158 Storage Obtain
                       00F60000
  --------------------------------------------------------------
  It gets back address 371FB158.
  
  
  .
  At the time of the failing MVC, the initial TO area was
  371FBBFE (offset AA6 into the MVS getmained area at 371FB158)
  And the initial length for the MVCL was  x'43F', which takes
  you past the end of the MVS Storage, into the next page
  371FC000, which it does not have access to, causing the program
  check.
  
  
  Additional Symptom(s) Search Keyword(s): KIXREVDAM
  DFHSM0001  abend (code 0C4/AKEA) has occurred at
             offset X'1BF6' in module DFHSMST
  This is due to a CICS SCA control block, which
  resides in MVS stroage, getting overlaid with  part of
  a message.
  DFHSM0001 An abend (code 0C4/AKEA) has occurred at
            offset X'1858' in module DFHSMAR.
  DFHDS0002 A severe error (code X'0074') has occurred in
            module DFHDSSR.
  In this case, the MVS storage overlaid was a SUSPAREA
  used by dispatcher.
  SM0001 abend0C4
  

Local fix

• n/a
  

Problem summary

• ****************************************************************
  * USERS AFFECTED: All CICS users.                              *
  ****************************************************************
  * PROBLEM DESCRIPTION: Message DFHME0001 An abend              *
  *                      (code 0C4/AKEA) has occurred at offset  *
  *                      X'03D30' in module DFHMEME.             *
  ****************************************************************
  An undefined transaction is dynamically routed, using CRTX
  transaction ID across several CICS regions.
  On the last region, the transaction abends AZT3.
  The abend is percolated back to the original region creating a
  large message to be sent to the terminal and to the CICS log.
  When CICS SYSTEM EVENT is use to track the message an abend0C4
  occurs in DFHMEME due to the size of the message exceeding the
  size of the getmained area.
  .
  Additional Keywords: DFHAC2206 MSGDFHAC2206
                       DFHAC2236 MSGDFHAC2236
                       DFHAC2261 MSGDFHAC2261
                       DFHAC2262 MSGDFHAC2262
                       DFHIR3783 MSGDFHIR3783
                       AbendAZI6 AZI6 AbendAZT3 AZT3
                       sense code 0824089E
                       S0C4 abendS0C4
  

Problem conclusion

• DFHMEME has been changed to prevent abending 0C4 when a large
  message is processed and CICS SYSTEM events are used.
  

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:

  UI55702

Modules/Macros

• DFHMEME
  

Fix information

• Fixed component name

  CICS TS Z/OS V5

• Fixed component ID

  5655Y0400

Applicable component levels

• R100 PSY UI55702

     UP18/05/12 P F805

Fix is available

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