Side by side
Google Cloud Datastream vs OpenLogReplicator
Both stand on change data capture software. Which one you can start free with, which one lets you read the code, and what each costs once you pay.
Datastream provides serverless change capture and replication to several Google Cloud destinations, with a free tier for specified source and destination combinations. Check event ordering, size limits, and processing charges against the needs of your data flow.
Visit Google Cloud DatastreamChoose OpenLogReplicator if you need free, self-hosted Oracle CDC with log-based capture, flexible output targets, and offline redo log processing. Teams needing binary XMLType support on Oracle 11.2 through 21c should account for its experimental status.
Visit OpenLogReplicatorThe facts
| Google Cloud Datastream | OpenLogReplicator | |
|---|---|---|
| Free plan | Yes | Yes |
| Open source | Not published | Not published |
| Runs on | API, Web | Linux, Self-hosted |
| Lowest paid plan | See the plans | Free or on request |
| Plans published | 3 | 1 |
| Maker | Not published | Not published |
| Website | cloud.google.com | bersler.com |
| On change data capture software | #8 of 23 | #12 of 23 |
Google Cloud Datastream: what it does well
- Free tier covers 100 GiB of eligible CDC data monthly.
- Streams can capture ongoing changes and backfill history.
- Scales automatically without resource provisioning or management.
- Offers IP allowlisting, SSH tunneling, and private VPC peering.
- Buffered data is encrypted at rest.
What to know first
- Event order is not guaranteed.
- Other Google Cloud resources are billed separately.
- Documented event limits are 20 MB for BigQuery and 100 MB for Cloud Storage.
- Some listed sources are preview.
OpenLogReplicator: what it does well
- Streams Oracle redo log changes as JSON or Protobuf.
- Supports Kafka, flat files, TCP/IP, ZeroMQ, and discard output.
- Can run offline from archived redo logs.
- Tracks actual DDL commands and allows basic DML filtering.
- Provides direct Prometheus metrics, including schema-tagged DML counters.
What to know first
- Runs on Linux in a self-hosted deployment.
- Binary XMLType support for Oracle 11.2 through 21c is experimental.
- Undecodable redo records stop processing by default.
Alternatives to Google Cloud Datastream Alternatives to OpenLogReplicator The whole list