Workflow recovery

Abstract

WorkJlow management systems ( WFMSs) more and more become the basic technology for organizations to pei$orm their daily business processes (workjlows). A consistent and reliable execution of such processes is crucial for all organizations. We claim that this can only be achieved by integrating transactional featuresespecially "workjlow transactions"into WFMSs. Based on this idea, we discuss in detail advanced workjlow recovery concepts which are necessary for the reliable and consistent execution of business processes in the presence of failures and exceptions. Additionally, we distinguish between different workflow types and present adequate recovery concepts for each of them.

Wechselwirkungen von Abhängigkeiten in transaktionalen Workflows

“…Workflows sind Aktivitäten, die die koordinierte Ausführung einer Reihe von Aufgaben (Tasks) umfaßt (Georgakopoulos et al 1995, Leymann 1996. Der Begriff des transaktionalen Workflows (Sheth et al 1993) spiegelt die Relevanz von Transaktionen für Workflows wider (Eder et al 1996). Transaktionale Workflows beinhalten die koordinierte Ausführung vieler, in Beziehung stehender Tasks, die auf heterogene, autonome und verteilte Systeme zugreifen und transaktionale Eigenschaften der Tasks des Workflows ausnutzen (Worah et al 1997).…”

Service-Oriented Computing – ICSOC 2008

“…A classification of faults with respect to workflows is given in [14,15]. Here, workflow engine failures, activity failures (expected exceptions), communication failures and unexpected exceptions are distinguished.…”

Workflow Recovery Framework for Exception Handling: Involving the User

“…[8] suggests an escalating concept to transform the failures that cannot be resolved in the level where they occur into exceptions. This way, the classification can be reduced to exceptions.…”

“…Some mechanisms should be implemented to handle these situations because they can occur frequently [7] and can cause a considerable amount of work to process. In the car accident example, the company has to re-schedule all future rentals for that specific car until the car is repaired.…”

“…[7] characterize failures and exceptions in a single dimension, encompassing two types of failures and two types of exceptions:…”