A fix is available
APAR status
Closed as program error.
Error description
The Gateway daemon did not shut down normally because two threads became deadlocked during the shutdown process, preventing the shutdown completion. If a shut down coincides with a scheduled statistics collection, the ZOSConsole thread and the statistics collection thread can hold locks that the other thread requires. Once the deadlock has occurred it is not possible to perform an immediate shut down of the Gateway daemon because all modify commands for the CICS TG job receive the following message: IEE342I MODIFY REJECTED-TASK BUSY Additional search words: msgIEE342I msgIEE342 IEE342
Local fix
N/A
Problem summary
**************************************************************** * USERS AFFECTED: All users of CICS Transaction Gateway for * * z/OS. * **************************************************************** * PROBLEM DESCRIPTION: CICS TG does not shut down normally. * **************************************************************** * RECOMMENDATION: * **************************************************************** If a statistics collection coincides with the collection of CICS TG shutdown statistics, the StatController thread and the ZOSConsole thread both attempt to acquire a lock on the CTGResourceMgr object and the StatCollector object. This can cause a deadlock with each thread holding a resource the other thread requires, preventing the Gateway daemon shutting down normally.
Problem conclusion
CICS TG has been changed to prevent the deadlock, allowing the normal shut down to complete.
Temporary fix
Comments
APAR Information
APAR number
PM46890
Reported component name
CTG V8 FOR Z/OS
Reported component ID
5655W1000
Reported release
800
Status
CLOSED PER
PE
NoPE
HIPER
NoHIPER
Special Attention
NoSpecatt / Xsystem
Submitted date
2011-09-01
Closed date
2012-01-04
Last modified date
2012-02-02
APAR is sysrouted FROM one or more of the following:
APAR is sysrouted TO one or more of the following:
PM55181 UK75194
Modules/Macros
CTG00201 CTG00204 CTG00585
Fix information
Fixed component name
CTG V8 FOR Z/OS
Fixed component ID
5655W1000
Applicable component levels
R800 PSY UK75194
UP12/01/19 P F201
Fix is available
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[{"Business Unit":{"code":"BU058","label":"IBM Infrastructure w\/TPS"},"Product":{"code":"SSGMJ2","label":"CICS Transaction Gateway"},"Platform":[{"code":"PF054","label":"z Systems"}],"Version":"8.0","Line of Business":{"code":"LOB35","label":"Mainframe SW"}}]
Document Information
Modified date:
09 August 2024