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DFHSR0606 abend 23E AKEB at CICS shutdown when using CA SymDump

Question & Answer


Question

Why am I receiving an abend 23E AKEB during shutdown of my CICS Transaction Server for z/OS (CICS TS) 4.2 region? I am using CA SymDump.

The message I receive is: DFHSR0606 applid Abend (code 23E/AKEB) has been detected.

Answer

Using the following diagnostics, I was able to determine that this problem is a result of CA SymDump module IN25INST issuing a DETACH of a TCB that is not valid. To resolve the problem, you should apply fix RO66740 from CA Technologies.

The 23E abend indicates during processing of a DETACH macro, the system found an error in the input parameters. Register 15 contains a hexadecimal reason code that explains the error.

If you review the system dump taken for the 23E abend, the reason code in MVS Register 15 is x'00000008' which indicates that a DETACH of a TCB was issued. But, the TCB specified was not a subtask of the caller's TCB.

The PSW in systrace shows that a DETACH (SVC 3E) is issued from IN25INST +x'D50'. Register 1 contains the pointer of the TCB that IN25INST wants to DETACH. In browse mode you can see that register 1 points to an invalid TCB address.

Following are part of the systrace entries showing the DETACH request and the 23E abend:

 IDENT  CD/D PSW----- ADDRESS-  UNIQUE-1 UNIQUE-2 UNIQUE-3  PSACLHS-
                                UNIQUE-4 UNIQUE-5 UNIQUE-6  PSACLHSE
  SVC     3E 00000000_30CDAD52  00000004 B0CDAD30 00225080  Detach
             07851000 80000000                    ********R1
 *SVCE     D 00000000_01453508  00000008 84000000 8423E000  00000001
                                ********R15 (Reason code)
             07041000 80000000  00000000                    00000000
 *RCVY  PERC                    8423E000 00000008           00000001
                                  *** abend code

In this case, R1 looks like this in browse mode:

 00225080  D2884812 00004010 D28C5870 7DC44587 | Kh.... .K...'D.g |
           ********

You could use IPCS command SUMM FORMAT to format out all the MVS TCBs.

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

Product Synonym

CICS/TS CICSTS CICS TS CICS Transaction Server

Document Information

Modified date:
20 November 2014

UID

dwa1165106