A fix is available
APAR status
Closed as program error.
Error description
During a normal shutdown of CICS, the region hung and had to be cancelled. The DS domain is in a DMWTQUEU wait state which occurs when the quiescing of a CICS domain has not yet completed. It is waiting for the SO domain to complete its quiesce. The SO domain is in a LMQUEUE wait trying to acquire the DSITLOCK exclusively. The owner of this lock is a task which called DFHSOPL fo a CLOSE_SOCKET_IN_POOL request. DFHSOPL gets the SOMGLOCK Exclusively in this process. DFHSOSE is then called for SECURE_SOC_CLOSE which will eventually call DFHDSAT for CHANGE_MODE. The task is then switched to the SP TCB to create a new pthread for the new TCB. DFHLEPT running on the SP TCB has gone into a wait out of lept_create_pthread. . This task is waiting for the SP TCBs IPT Thread to create an S8 TCB so it can complete the SECURE_SOC_CLOSE. But the IPT TCB is no longer there. . In addition, the following failure may occur: DFHSO0001 ABEND 0C1/AKEA in module DFHSODS . Additional Symptom(s) Search Keyword(s): KIXREVCTC
Local fix
Problem summary
**************************************************************** * USERS AFFECTED: All CICS users * **************************************************************** * PROBLEM DESCRIPTION: CICS hangs during shutdown when an * * outbound socket times out. * **************************************************************** * RECOMMENDATION: . * **************************************************************** A URIMAP with USAGE(CLIENT) SCHEME(HTTPS) and a non-zero SOCKETCLOSE value is installed. This causes outbound connection pooling to be in use for all connections using this URIMAP. When CICS is shut down at least 1 socket remains in the outbound connection pool. The SOCKETCLOSE time expires for this socket at the same time that DFHSODM is terminating the CICS SSL environment. The timing of these events means that the TI task holds the DSITLOCK and gets stuck waiting for an S8 TCB to be created. DFHSODM is in the process of deleting the SP TCB and it suspends waiting for the DSITLOCK. The request to create a new S8 TCB will never complete, because the SSL environment has been terminated, and so CICS shutdown hangs.
Problem conclusion
DFHSODM and DFHSOPL have been changed to explicitly close all sockets within outbound connection pools before terminating the SSL environment.
Temporary fix
Comments
APAR Information
APAR number
PI83321
Reported component name
CICS TS Z/OS V5
Reported component ID
5655Y0400
Reported release
100
Status
CLOSED PER
PE
NoPE
HIPER
NoHIPER
Special Attention
NoSpecatt / Xsystem
Submitted date
2017-06-20
Closed date
2017-07-24
Last modified date
2017-08-02
APAR is sysrouted FROM one or more of the following:
APAR is sysrouted TO one or more of the following:
UI49020 UI49021
Modules/Macros
DFHSOAD DFHSOCK DFHSODM DFHSODUF DFHSOIS DFHSOL DFHSOLI DFHSOLS DFHSOLX DFHSOLX6 DFHSOM01 DFHSOM02 DFHSOM03 DFHSOPL DFHSOPLT DFHSORD DFHSOS00 DFHSOS01 DFHSOS02 DFHSOS03 DFHSOS04 DFHSOS05 DFHSOS06 DFHSOS07 DFHSOS08 DFHSOS09 DFHSOS10 DFHSOS11 DFHSOS12 DFHSOS13 DFHSOS14 DFHSOS15 DFHSOS16 DFHSOS17 DFHSOS18 DFHSOS19 DFHSOS20 DFHSOS21 DFHSOS22 DFHSOS23 DFHSOSE DFHSOST DFHSOTB DFHSOTI DFHSOTRI DFHSOUE DFHSOXM DFHWBCL DFHWBSC DFHWBUR DFJ@H360
Fix information
Fixed component name
CICS TS Z/OS V5
Fixed component ID
5655Y0400
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:
02 August 2017