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Oracle GoldenGate 12c Implementer's Guide by John P Jeffries

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Event-based processing

It is important in any data replication environment to capture and manage events, such as trail records containing specific data or operations or maybe the occurrence of a certain error. These are known as Event Markers.

GoldenGate provides a mechanism to perform an action on a given event or condition. These are known as Event Actions and are triggered by Event Records. If you are familiar with Oracle Streams, Event Actions are like rules.

The Event Marker System

GoldenGate's Event Marker System, also known as event marker interface (EMI), allows custom DML-driven processing on an event. This comprises of an Event Record to trigger a given action. An Event Record can be either a trail record that satisfies a condition evaluated ...

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