Active Data Guard or GoldenGate are used for disaster recovery when fast recovery times or additional levels of data protection are required. and offload queries and backup to standby system.
Oracle GoldenGate to support a disaster recovery site is to have a working bi-directional data flow, from the primary system to the live-standby system and vice versa.
DataGuard and Automatic Backup
You can enable the Automatic Backup feature on a database with the standby role in a Data Guard association. However, automatic backups for that database will not be created until it assumes the primary role.
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