Browse Prior Art Database

Application Checkpoint Control

IP.com Disclosure Number: IPCOM000061838D
Original Publication Date: 1986-Sep-01
Included in the Prior Art Database: 2005-Mar-09
Document File: 1 page(s) / 12K

Publishing Venue

IBM

Related People

Elliott, H: AUTHOR [+2]

Abstract

This article describes a method by which users of a manufacturing accounting and production information control program are provided with status information when failures occur and allowed to continue processing, if possible. A restart capability is provided to allow a procedure to resume operation after an abnormal termination. As a general rule, if there are no master file update programs running at the time of the abnormal termination, the system should be restartable. If a message is displayed indicating the system is not restartable, another message tells the user that the restore procedures must be used. Six situations are possible when a failure occurs: restartable workstation procedure - an operator was entering transaction data or doing file maintenance.

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Application Checkpoint Control

This article describes a method by which users of a manufacturing accounting and production information control program are provided with status information when failures occur and allowed to continue processing, if possible. A restart capability is provided to allow a procedure to resume operation after an abnormal termination. As a general rule, if there are no master file update programs running at the time of the abnormal termination, the system should be restartable. If a message is displayed indicating the system is not restartable, another message tells the user that the restore procedures must be used. Six situations are possible when a failure occurs: restartable workstation procedure - an operator was entering transaction data or doing file maintenance. - nonrestartable workstation procedure - an update operation by a program attached to a workstation was in progress. -restartable job queue procedure - the job running in the job queue was at a point where it can recover itself and continue processing. It will be placed back on the job queue and continue execution if no other critical errors are found. -nonrestartable job queue procedure - the job running in the job queue was updating files. -install/tailor procedure was not completed. -save master files procedure was not completed. The restartable situations merely require the operators to determine what information the system had accepted before the failure. If an operator had just submitted or was in the pro...