Classic event subsystem components

Configuration Editor

Part of the Operations Control Management Console. Used to specify event definitions and possible actions.

Runtime database

Stores event definition information and all data generated by the Event subsystem, such as records of event detections, data summaries, and data snapshots.

Event System Service (aahEventSvc.exe)

Internal process that coordinates event detection and action functions. This process runs as a Windows service. Using the Operations Control Management Console, you can configure the event service to automatically start and stop at the same time as the AVEVA Historian. The event service is responsible for:

Reading event definition information from the Runtime database.

Creating event detectors and actions, including allocating the necessary processing threads and establishing database connections.

Initiating the event detection cycle.

SQL variables

Available for use in event queries.