Oracle Data Guard
Oracle's disaster-recovery and data-protection architecture for maintaining synchronized standby databases from a primary database.
Technical Context
Data Guard design is a trade-off among protection mode, transport latency, redo apply lag, failover objectives, and operational complexity. RPO and RTO should be validated under real network and storage conditions rather than inferred from configuration alone.
Related Concepts
- redo transport
- standby database
- Fast-Start Failover
- RPO