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DFHAP0001 0C3 AKEA at FFFF in DFHSUWT during CICS startup

Question & Answer


Question

Why would all my CICS Transaction Server for z/OS (CICS TS) regions on same SMS plex started receiving 0C3 AKEA abends at startup? The regions initialize successfully so the abend doesn't appear to have any impact on the regions. This is the message I'm receiving:

DFHAP0001 An abend (code 0C3/AKEA) has occurred at offset X'FFFF' in module DFHSUWT.

Answer

To format the Kernel domain of a system dump of the AP0001, you can enter IPCS command VERBX DFHPDxxx 'KE=1' (where xxx is your release level of CICS like 700 for CICS TS 5.3).

In this case, the dump shows the task running in error is CSSY.

The KE domain error table shows the following:

  ==KE: KE Domain Error Table Summary                                     
  ERR_NUM   ERR_TIME  KE_NUM  ERROR TYPE    ERR_CODE  MODULE    OFFSET    
  =======   ========  ======  ==========    ========  ======    ======    
  00000001  05:36:49   0092   PROGRAM_CHECK 0C3/AKEA  UNKNOWN   UNKNOWN   
     Error Code:  0C3/AKEA    Error Type:  PROGRAM_CHECK  
    KE_NUM:  0092  KE_TASK:  00000000_19897000  TCA_ADDR:  181CE800   
    DS_TASK:  18059680  XM_TOKEN:  18108300  TRAN_NO:  00012          
 Program DFHSUWT  was in control, but the PSW was elsewhere.          
  Error happened under the CICS RB.                                   
  CICS Registers and PSW:                                             
  PSW:  47040000 00000000 00000000 00C46D32                           
  Instruction Length:  4  Interrupt Code:  03                         
  Exception Address:  00000000_0063F800                               
  Execution key at Program Check/Abend: 0                             
  Addressing Mode:  24                                                
  Space at Program Check/Abend: Basespace                             
  Breaking Event Address: 00000000_01113770                           
                             - offset UNKNOWN in module UNKNOWN 
   64-BIT REGISTERS 0-15 
   GPR 0-3   00000000_00011000  00000000_FFFFFFFE                   
             00000000_00007000  00000000_17DBD3B8                   
   GPR 4-7   00000000_1989D708  00000000_7F63F000                   
             00000000_009FC148  80000000_1434E968                   
   GPR 8-B   00000000_00C4C000  00000000_00000068                   
             00000000_00000000  00000000_00C46890                   
   GPR C-F   00000000_009C3B98  00000000_1989D708                   
             00000000_97DBD29E  00000000_00000000                   
 .                                                                  
 00C46D22 | 4780 B4B2      | BC      X'8',X'4B2'(,R11)              
 00C46D26 | 9101 5096      | TM      X'96'(R5),X'01'                
 00C46D2A | 4710 B4A2      | BC      X'1',X'4A2'(,R11)              
 00C46D2E | 4400 B49E      | EX      0,X'49E'(,R11)<<failing instruction  
 00C46D32 | 4B10 B5D2      | SH      R1,X'5D2'(,R11)<<PSW points to  

The failing CSSY task fails with the abend0C3 EXECUTE exception in CAS9EVT #CA-ENF# (at 0C46420). The failing EXECUTE instruction (at 00C46D2E) is attempting to execute itself, thus abend0C3 occurred.

CA ENF/CICS was trying to initialize in regions with no products that make use of this facility. After ENF was disabled in CICS the abend 0C3/AKEA no longer occurred.

[{"Business Unit":{"code":"BU058","label":"IBM Infrastructure w\/TPS"},"Product":{"code":"SSGMGV","label":"CICS Transaction Server"},"Platform":[{"code":"PF035","label":"z\/OS"}],"Component":"Startup","Version":"","Line of Business":{"code":"LOB35","label":"Mainframe SW"}}]

Product Synonym

CICS/TS CICSTS CICS TS CICS Transaction Server

Document Information

Modified date:
17 January 2018

UID

dwa1418699