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iIS Process Management Tasks
Chapter 1 Introduction: iIS Process Management 39
Managing iIS Process Engines
Care must be taken to make sure that each iIS process engine is set up and
performing properly. Managing engines consists of the following tasks:
• configuring engines
• starting up and shutting down engine components
• monitoring and changing the state of an engine
• reconfiguring an engine to accommodate increased load, improve
performance, or recover from failure
• managing engine databases
Managing Registration
An iIS process engine executes process logic created in the process development
workshops: process definitions, assignment rule dictionaries, and a user profile.
These software components need to be registered with the engine so they can be
dynamically loaded by the engine and used in process execution.
As a system manager, you have to regularly register new or updated process
definitions (or assignment rule dictionaries or a user profile) with an engine, and
possibly unregister them when they become obsolete.
Managing Process Execution
In executing process definitions, the engine creates instances of each process
definition and coordinates their execution from start to finish. During process
execution, a succession of activities specified by the process definition is performed
by client application that have opened sessions with the engine. The engine
manages and tracks these activities through to their final completion, ensuring that
they are performed in proper sequence.