What kind of data redundancy is implemented in Oracle Autonomous Database?

Oracle Autonomous Database implements Oracle Data Guard for data redundancy. Oracle Data Guard is a robust solution that provides high availability, data protection, and disaster recovery for Oracle databases. It facilitates the creation and management of one or more standby databases that can take over seamlessly in the event of a failure with the primary database. This ensures that data remains accessible and that operations can continue with minimal disruption, contributing to the overall reliability and resilience of database services.

Using Oracle Data Guard, Autonomous Database can maintain a synchronized environment, enabling automatic failover to a standby database if necessary. This capability is crucial in environments where downtime can significantly impact business operations. The technology also allows for the recovery of data by rolling forward to a point just before a failure, ensuring that the greatest amount of data possible is retained.

The other options provided, while potentially relevant in different contexts, do not specifically relate to the core data redundancy mechanism employed by Oracle Autonomous Database. They either refer to different backup strategies or replication technologies that do not focus on the specific high-availability functionalities that Oracle Data Guard offers.