Google Cloud Datastream vs Oracle GoldenGate

Google Cloud Datastream is a serverless change data capture and replication service for synchronizing data. Streams can capture ongoing updates and backfill historical records, while the service scales automatically without resources for users to provision or manage. Supported destinations include BigQuery, Cloud Storage, and Apache Iceberg tables. Documented sources include Oracle, MySQL, PostgreSQL, AlloyDB, SQL Server, MongoDB, Spanner, Salesforce, ServiceNow, Workday, and Microsoft Dataverse; some sources are marked as preview. Datastream can work with Dataflow templates to load data from Cloud Storage into destinations including BigQuery, Cloud SQL, and Spanner. Connectivity options include IP allowlisting, a forward SSH tunnel, and private connectivity over VPC peering. Processing is charged, idle streams incur no cost, and other Google Cloud resources are billed separately. The free tier includes 100 GiB of eligible CDC data per month per billing account. Events are delivered at least once, but ordering is not guaranteed. Datastream is administered through the Google Cloud console, CLI, or REST API.

Oracle GoldenGate is a data replication service supporting change data capture and multi-way movement between databases. It offers hybrid deployment, cross-region replication, and data transformations. Supported systems include Oracle Database, MySQL, PostgreSQL, Microsoft SQL Server, Db2 LUW, Db2 z/OS, Db2 for i, Sybase, Teradata, Yugabyte, TimesTen, MongoDB, and Cassandra. Oracle GoldenGate Free provides a free perpetual license, a recipe-driven interface, and Docker deployment. OCI GoldenGate is listed at $1.34 a month, with each partial OCPU hour billed as a full hour and usage of 1–24 OCPUs. OCI GoldenGate BYOL is a bring-your-own-license route for on-premises users, with pricing not publicly listed on the opened pricing page. The service is available on Linux and the web. Oracle was founded in 1977 and is headquartered in Austin, Texas, USA.