SYSVIEW Modules Abend on Closing CICS Instances

Products

• SYSVIEW Performance Management

Issue/Introduction

Using CICS 5.5 and Sysview 15.0 (or higher) multiple Abend S0C6 may occurs during CICS shutdown process.

During processing of a message, DFHDUDT is called for dump processing and begins taking 0C6 abends due to character
data x'4F's or "\" that have overlaid the DUA (Dump anchor block).

Eventually, a recursive abend is detected:

DFHDU0001 AN ABEND (CODE 0C6/AKEA) HAS OCCURRED AT OFFSET
  X'0BE6' IN MODULE DFHDUDT.

 

SYSVIEW Messages like these below appear on CICS Joblog

 

07.02.08 STC65483  +GSVC112I (Task) Shutdown routine GSVCGSVT has been inserted into PLT phase 2                    

07.02.08 STC65483  +DFHTM1703 TCICS CICS IS BEING TERMINATED BY USERID PYBCONS IN TRANSACTION CEMT AT TERMINAL ¬AAA.

07.02.08 STC65483  +DFHCESD  TCICS    SHUTDOWN ASSIST TRANSACTION CESD STARTING. SHUTDOWN IS IMMEDIATE.                 

.07.02.37 STC65483  +GSVC906I (GSVI) Shutdown initiated by CICS termination                                              

07.02.37 STC65483  +GSVC901I (GSVI) CA SYSVIEW for CICS shutdown started                                                

07.02.37 STC65483  +GSVC143I (GSVI) Monitoring environment has been terminated                                          

07.02.37 STC65483  +GSVC047I (GSVI) Monitor exit interface has been inactivated                                         

07.02.37 STC65483  +GSVC051I (GSVI) CICS Exception monitoring has been set OFF. CICS setting OFF. CVDA value  333       

07.02.37 STC65483  +GSVC051I (GSVI) CICS Performance monitoring has been set OFF. CICS setting OFF. CVDA value  331     

07.02.37 STC65483  +GSVC051I (GSVI) CICS  monitoring has been set OFF. CICS setting OFF. CVDA value  200

07.02.37 STC65483  +DFHDU0001 TCICS AN ABEND (CODE 0C6/AKEA) HAS OCCURRED AT OFFSET X'0BE6' IN MODULE DFHDUDT.    

07.02.37 STC65483  +DFHDU0001 TCICS AN ABEND (CODE 0C6/AKEA) HAS OCCURRED AT OFFSET X'0BE6' IN MODULE DFHDUDT.    

07.02.37 STC65483  +DFHDU0001 TCICS AN ABEND (CODE 0C6/AKEA) HAS OCCURRED AT OFFSET X'0BE6' IN MODULE DFHDUDT.    

07.02.37 STC65483  +DFHDU0001 TCICS AN ABEND (CODE 0C6/AKEA) HAS OCCURRED AT OFFSET X'0BE6' IN MODULE DFHDUDT.    

07.02.37 STC65483  +DFHDU0001 TCICS AN ABEND (CODE 0C6/AKEA) HAS OCCURRED AT OFFSET X'0BE6' IN MODULE DFHDUDT.    

07.02.37 STC65483  +DFHDU0001 TCICS AN ABEND (CODE 0C6/AKEA) HAS OCCURRED AT OFFSET X'0BE6' IN MODULE DFHDUDT.    

07.02.37 STC65483  +DFHDU0001 TCICS AN ABEND (CODE 0C6/AKEA) HAS OCCURRED AT OFFSET X'0BE6' IN MODULE DFHDUDT.    

07.02.37 STC65483  +DFHKE0303 TCICS    A RECURSIVE ABEND HAS BEEN DETECTED BY THE KERNEL DOMAIN.                  

07.02.37 STC65483  +DFHKE0201 TCICS    ABOUT TO TAKE SDUMP. DUMPCODE: KERNDUMP, DUMPID: 0/0000. (MODULE DFHKESTX).

07.02.38 STC65483  IEA794I SVC DUMP HAS CAPTURED:  287                                                            

   287             DUMPID=016 REQUESTED BY JOB (PYBK132T)                                                         

   287             DUMP TITLE=CICS DUMP: SYSTEM=TCICS    CODE=KERNDUMP ID=0/0000                                  

07.02.38 STC65483  +DFHKE0202 TCICS    SDUMP COMPLETE. (MODULE DFHKESTX).                                         

07.02.38 STC65483  GSVC923E (SCHT) Subtask GSVCSCHT has abnormally terminated with no restart                      

07.02.38 STC65483  GSVC923E (TPPT) Subtask GSVCTPPT has abnormally terminated with no restart                     

07.02.38 STC65483  GSVC923E (SDCS) Subtask GSVCSDCS has abnormally terminated with no restart                     

07.02.38 STC65483  GSVC923E (XDIS) Subtask GSVCXDIS has abnormally terminated with no restart                     

07.02.38 STC65483  GSVC923E (LOGT) Subtask GSVCLOGT has abnormally terminated with no restart                     

07.02.38 STC65483  BPXP018I THREAD 1CD1D00000000000, IN PROCESS 543, ENDED  308                                   

   308             WITHOUT BEING UNDUBBED WITH COMPLETION CODE 0033E000                                           

   308             , AND REASON CODE 00000000.                                                                    

07.02.38 STC65483  BPXP018I THREAD 1CC9480000000000, IN PROCESS 540, ENDED  309     

   309             WITHOUT BEING UNDUBBED WITH COMPLETION CODE 0033E000              

   309             , AND REASON CODE 00000000.                                      

07.02.43 STC65483  +DFHKE1800 TCICS    ABNORMAL TERMINATION OF CICS IS COMPLETE.    

07.02.43 STC65483  BPXP018I THREAD 1CDFF80000000000, IN PROCESS 33554974, ENDED  315

   315             WITHOUT BEING UNDUBBED WITH COMPLETION CODE 00000708             

   315             , AND REASON CODE 00000000.                                      

07.02.43 STC65483  IEF450I PYBK132T PYBK132T - ABEND=S000 U1800 REASON=00000000  316

   316                     TIME=07.02.43                                            

 

Note

When SYSVIEW (GSVT)  service is manually stopped before shutdown, CICS shuts down normally.

 

Environment

SYSVIEW with IBM CICS 5.5 

Cause

When a CICS dump data set, DFHDMPA or DFHDMPB, is closed, part of the DU domain anchor (DUA) storage is released.
If some other component or product obtains and uses the released storage, then the DU domain can fail or behave incorrectly.

Resolution

Apply PTF PH15770 - IBM CICS 5.5 

https://www.ibm.com/support/pages/apar/PH15770