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Advanced Restart Processing in Workflow Systems

IP.com Disclosure Number: IPCOM000013047D
Original Publication Date: 1999-Dec-01
Included in the Prior Art Database: 2003-Jun-12

Publishing Venue

IBM

Related People

Authors:
Frank Leymann Dieter Roller

Abstract

1 Introduction Workflow management systems support the definition and execution of business processes. Those business processes are made up of a set of activities. Each activity is carried out by executing the associated activity implementation. Activity implementations may terminate abnormally. If the activity implementation is carried out as a safe application, as described in (1), all changes are undone and the activity implementation is restarted. If the activity implementation is not carried out as a safe application, the actions taken by the workflow management system depend on which mechanism has been used to invoke the activity implementation. If the workflow management system recognizes the abnormal termination and puts the activity into inError state with an appropriate indicator. If the workflow management system can not recognize an abnormal termination, the activity stays in the running state. If a time-out value has been provided, the workflow management system puts the activity into an inError state, when the specified value has been exceeded. 2 Problem Statement