Oracle GoldenGate operates by capturing changes directly from the transaction logs of source databases. It supports both homogeneous and heterogeneous environments, enabling real-time data replication across different types of databases, such as Oracle, MySQL, SQL Server, PostgreSQL, and more.

Oracle GoldenGate Data Flow Explanation

Target Database
This is the destination where the replicated data is written, keeping it synchronized with the source

Source Database
This is the origin of the data. Any changes (inserts, updates, deletes) made here are captured for replication.

Capture Process (Extract)
The Extract process runs on the source system and reads changes directly from the transaction logs of the source database. These changes are written to a local trail file in a platform-independent format.

Data Pump Process (Optional but Recommended)
The Data Pump reads the local trail file and transmits the data securely to the target system, where it is stored in a remote trail file. This process helps in buffering, filtering, and compressing data during transfer.

Replicat Process (Apply)
On the target system, the Replicat process reads the remote trail file and applies the changes to the target database, ensuring transactional consistency.