WebSphere brand IBM WebSphere Premises Server, Version 6.1.x

Replaying tag movements and events

This topic explains replaying tag movements and events and how to do it.

Location Awareness Services for WebSphere® Premises Server allows you to replay tag movements and events. For example, you might use this feature to replay events that led to a recent alert or you might use it to replay an evacuation drill to identify improvements to procedures or the need for more training.

Important: Replaying tag movements and events can severely impact performance. To avoid large amounts of historical data, schedule deletion of data after n number of hours. The amount of data stored on your system depends on the number of tags tracked in Location Awareness Services for WebSphere Premises Server and on the database system.

Replay is based on historical administrative data (such as about zones, classes, rules, and so forth) and historical runtime data (such as tag movements, zone entry events, and rule-based events). Historical data is stored in the Location Awareness Services for WebSphere Premises Server database and is used to replay specific periods of time. For runtime data to be available for the replay, the LogHistory property must be set to Y during the time frame that will be replayed later. See System Properties.

You can view events that were logged during the period of time you are replaying on the Spatial Management Client or in the CEI Events portlet.

For details on how to replay events, see the Replay section in the Spatial Management Client topic.


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