The Oracle GoldenGate capture process is known as Extract. Each instance of an Extract process is known as a group, which includes the process itself and the associated files that support it.

An additional Extract process, known as a data pump, is recommended to be used on the source system, so that captured data can be persisted locally to a series of files known as a trail. The data pump does not capture data but rather reads the local trail and propagates the data across the network to the target.

The Oracle GoldenGate apply process is known as Replicat. Each instance of a Replicat process is known as a group, which includes the process itself and the associated files that support it. Replicat reads data that is sent to local storage, known as a trail, and applies it to the target database.

The following diagram illustrates the basic Oracle GoldenGate process configuration.