Data Guard replicates the entire database for disaster recovery (same version, same schema); GoldenGate does logical replication and supports heterogeneous targets, different schemas, and active-active configurations.
Rule of thumb
If your goal is DR for an identical standby database, Data Guard is simpler and purpose-built for it. If you need selective table replication, cross-version migration, or active-active writes, GoldenGate is the right tool despite its higher operational complexity.
Leave a Reply