As service targets provide an abstraction of a logical business function as opposed to a physical target, the metrics are measured indirectly. As the service target is a logical abstraction of a real-world business function, there is no direct metric available for any Oracle Management Agent to measure and collect. Therefore, similar to the availability of the service targets, the key performance indicators of the service targets too must be defined based on the system components or based on the service tests executed by different beacons. In this case, the various metrics of the service target are derived from the metrics of the underlying system components or from the metrics of the service tests executed for the service target from various beacons. This process of computing the metrics of a target within OEM Grid Control based on dependent metrics of other targets or the same target is called metric promotion.

The performance and usage metrics of the...