A fix is available
APAR status
Closed as program error.
Error description
Message 'DFHSM0002 A severe error (code X'0305') has occurred in module DFHSMGF' was being issued at shutdown time due to a double freemain of a DFHSZDCD FEPI control block. 00022 SZ SM 0305 SMGF *EXC* Invalid_freemain_address FUNCTION(FREEMAIN) SUBPOOL_TOKEN(51A06728 , 00000168) ADDRESS(358A1600) REMARK(RDC:DCD.) RET-B39006AE 20:00:15. Reg14 points to mod DFHSZRDC (UK62305) offset x'6AE'.
Local fix
na
Problem summary
**************************************************************** * USERS AFFECTED: All CICS users. * **************************************************************** * PROBLEM DESCRIPTION: Double FREEMAIN of FEPI DFHSZDCD * * connection control block during * * shutdown. * **************************************************************** * RECOMMENDATION: * **************************************************************** CICS is being shutdown driving a normal FEPI shutdown. At this time an UNBIND is received for one of the FEPI connections causing the FEPI SCIP exit DFHSZXSC to run and mark the connection as lost. As part of FEPI shutdown, a TERMSESS request is issued for this connection, even though it is already marked as lost. The TERMSESS takes some time to complete, and during this interval FEPI shutdown processing calls DFHSZRDC to delete the DFHSZDCD connection storage. When the TERMSESS does complete, the RPL exit DFHSZXFR is driven and queues the (now freed) connection up for further processing. As all the same flags are set as when the connection was first deleted, FEPI again calls DFHSZRDC which attempts a second FREEMAIN, resulting in message 'DFHSM0002 A severe error (code X'0305') has occurred in module DFHSMGF'. Additional keywords: MSGDFHSM0002 SM0002
Problem conclusion
FEPI has been changed for the reported scenario so that the unnecessary TERMSESS will not be issued during FEPI shutdown.
Temporary fix
FIX AVAILABLE BY PTF ONLY
Comments
APAR Information
APAR number
PM72711
Reported component name
CICS TS Z/OS V4
Reported component ID
5655S9700
Reported release
600
Status
CLOSED PER
PE
NoPE
HIPER
NoHIPER
Special Attention
NoSpecatt
Submitted date
2012-09-12
Closed date
2012-09-27
Last modified date
2012-11-01
APAR is sysrouted FROM one or more of the following:
APAR is sysrouted TO one or more of the following:
UK82251 UK82252
Modules/Macros
DFHSZ2CP
Fix information
Fixed component name
CICS TS Z/OS V4
Fixed component ID
5655S9700
Applicable component levels
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:
01 November 2012