Oracle Data Guard
Oracle Data Guard is a high-availability and disaster recovery solution for Oracle databases that provides data protection and availability by maintaining standby databases as synchronized copies of a primary database. It ensures business continuity by enabling failover and switchover operations, with support for physical, logical, and snapshot standby configurations. The technology replicates data changes from the primary to standby databases, offering features like real-time apply, fast-start failover, and automated role transitions.
Developers should learn Oracle Data Guard when working on enterprise applications requiring high availability, disaster recovery, or data protection for Oracle databases, such as in financial, healthcare, or e-commerce systems. It is essential for minimizing downtime during planned maintenance or unplanned outages, ensuring data consistency across sites, and meeting compliance requirements for data redundancy. Use cases include setting up standby databases for failover scenarios, offloading reporting workloads to standby instances, and implementing geographically distributed data centers.