A fix is available
APAR status
Closed as program error.
Error description
You receive DFHWB0001 An abend (code 0C4/AKEA) has occurred at offset x'3A98' in module DFHWBSV. You have APAR PM74806 on PTF UK90242 installed. The ABEND0c4 occurs in DFHWBSV +x'3A94' on a STORE instruction because register 9 is 00000000. The trace shows CISR fails with: WB 0D02 WBSV *EXC* - RECOVERY_ENTERED FUNCTION(WRITE_RESPONSE) SESSION_TOKEN(00000000 , 00000000) BODY(00000000 , 00000000) STATUS_CODE(C8) HEADER_NAME_LIST(0F240628 , 00000005) HEADER_VALUE_LIST(0EE138A0 , 00000005) MEDIATYPE (application/nnn.nnn.cics.isc) The problem occurs when CICS is responding to a pong message to a remote system. CICS will reuse the buffer that the PING message came in, change the command type to PONG, and then call DFHWBSV to send it back. There can be a timing issue if CIST runs and clears the wbs_session_token. CISR abends with an abend0c4 due to the session token containing zeros. Additional Symptom(s) Search Keyword(s): KIXREV Additional Symptom(s) Search Keyword(s): KIXREVRJL
Local fix
Problem summary
**************************************************************** * USERS AFFECTED: All CICS users. * **************************************************************** * PROBLEM DESCRIPTION: CICS ABEND with message DFHWB0001 S0C4 * * at offset x'3A98' in DFHWBSV when it * * responses a pong message over IPIC to * * remote region. * **************************************************************** * RECOMMENDATION: * **************************************************************** A CICS 4.2 region is connected with a CICS 5.1 region over IPIC, CICS 5.1 region sends the ping message over IPIC every 60 seconds. The IPCONN is released just after a ping message comes into CICS 4.2 region through one of the isss_wb_session,and isss_wb_session is set to 0 before CICS processes the ping message. CICS uses the same isss_wb_session to send pong message to remote CICS partner. Then, CICS reports DFHWB0001 and CISR ABEND with S0C4 because isss_wb_session contains invalid session token. Additional keywords: msgDFHWB0001,WB0001.
Problem conclusion
CICS has been changed to make sure isss_wb_session is valid before CICS sends pong message.
Temporary fix
FIX AVAILABLE BY PTF ONLY
Comments
APAR Information
APAR number
PM86010
Reported component name
CICS TS Z/OS V4
Reported component ID
5655S9700
Reported release
700
Status
CLOSED PER
PE
NoPE
HIPER
NoHIPER
Special Attention
NoSpecatt
Submitted date
2013-04-01
Closed date
2013-07-12
Last modified date
2013-08-02
APAR is sysrouted FROM one or more of the following:
APAR is sysrouted TO one or more of the following:
PM86723 UK95774
Modules/Macros
DFHISRR
Fix information
Fixed component name
CICS TS Z/OS V4
Fixed component ID
5655S9700
Applicable component levels
R700 PSY UK95774
UP13/07/18 P F307
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.
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Document Information
Modified date:
02 August 2013