This blog reference to Oracle Goldengate Articles [ Ateam-Oracle].
Oracle GoldenGate provides real-time, log-based change data capture, and delivery between heterogeneous systems.
Using this technology, it enables a cost-effective and low-impact real-time data integration and continuous availability solution.
Oracle GoldenGate moves committed transactions with transaction integrity and minimal overhead on your existing infrastructure.
The architecture supports multiple data replication topologies such as one-to-many, many-to-many, cascading, and bidirectional.
Its wide variety of use cases includes real-time business intelligence; query offloading; zero-downtime upgrades and migrations;
and active-active databases for data distribution, data synchronization, and high availability