Data Guard broker components
We can divide the Data Guard broker components into two—client-side and server-side interfaces—as shown in the following diagram:
Oracle Data Guard broker server-side components
The components of the Data Guard broker are the Data Guard Monitor process and the configuration file, as shown in the following diagram:
Data Guard Monitor process (DMON)
The DMON is installed as part of the Oracle database software and manifests as a background component when enabled. The DMON process on the primary database is the owner of the configuration. ...