The modern Oracle GoldenGate alternative
for log-based CDC.
TwinCommit is a log-based replication engine that teams evaluate as an Oracle GoldenGate alternative. It reads redo and transaction logs directly, applies changes in commit order with exactly-once delivery, and ships as a single binary you can run in minutes, with an MCP server for day-two operations.
TwinCommit at a glance
- 0 objectsinstalled in your source database
- Exactly-oncecheckpoint commits with the data
- 1 binaryno JVM, manager or agents
- 22 connectorscovering the top 15 databases
- MCP serveroperate it from Claude, Copilot or Cursor
Why teams choose TwinCommit
What you get when you move off Oracle GoldenGate
One binary, not a platform
No extract, pump and replicat processes to orchestrate. One process reads the log, buffers transactions and applies them.
Lakehouse-native targets
Databricks, Snowflake, BigQuery, Redshift, Spark, Hive and Kafka are first-class targets, configured the same way as PostgreSQL or SQL Server.
Predictable licensing
Priced per source database, so adding targets, cores or replicas does not change the bill.
Operable by anyone
Plain YAML config, Prometheus metrics and an MCP server that lets on-call engineers ask "why is lag rising?" in plain English.
Evaluation checklist
Questions to ask in any Oracle GoldenGate evaluation
Here is how TwinCommit answers each one. Put the same questions to every vendor on your shortlist.
| Question | TwinCommit |
|---|---|
| What has to be installed or enabled inside the source database? | ✓Nothing beyond standard logging settings. No triggers, capture tables, shadow tables or stored procedures. |
| How is exactly-once delivery guaranteed after a crash? | ✓The checkpoint is committed in the same target transaction as the data, so a restart never loses or repeats a transaction. |
| Are transactions applied in source commit order? | ✓Yes. Changes are buffered per transaction and applied at commit, in commit order. Rolled-back work never reaches the target. |
| What runs on the replication host? | ✓One static binary. No JVM, no application server, no separate manager process. |
| Does one product cover relational, NoSQL, warehouse and streaming targets? | ✓Yes. Oracle, MySQL, SQL Server, PostgreSQL, MongoDB, Cassandra, Redis, Elasticsearch, Snowflake, Databricks, Synapse, BigQuery, Redshift, S3/ADLS/GCS data lakes, Spark, Hive and Kafka all use the same pipeline format. |
| How do operators manage it day to day? | ✓CLI, Prometheus metrics and a built-in MCP server, so you can check lag, restart pipelines and re-snapshot tables from Claude, Copilot or Cursor. |
| How is it licensed? | ✓Flat per source database. Not per core, not per row, and not per target. |
| How long to the first replicated row? | ✓Minutes: twincommit check, twincommit snapshot, twincommit run. |
Migration path
From Oracle GoldenGate to TwinCommit in three steps
No big-bang cutover. Your source database doesn't change.
- 1
Inventory
Map your existing parameter files and table mappings to a TwinCommit
tables:list. Most mappings translate one-to-one. - 2
Run in parallel
Start TwinCommit against a new target schema while the current replication keeps running.
twincommit verifycompares row counts and checksums. - 3
Cut over
Point consumers at the TwinCommit-managed target, then decommission the old pipeline. No source changes required.
TwinCommit vs Oracle GoldenGate: FAQ
Is TwinCommit a drop-in replacement for Oracle GoldenGate?
+
TwinCommit covers log-based capture, commit-ordered apply and exactly-once delivery for the sources and targets it supports. Most teams run it in parallel with their current tool, verify, then cut over.
Does TwinCommit support Oracle RAC?
+
Yes. TwinCommit reads redo threads from every RAC instance and merges them in SCN order.
Can TwinCommit replicate Oracle to Databricks?
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Yes. Oracle to Databricks is a standard TwinCommit route, landing changes in Delta Lake tables with MERGE.
More comparisons
Oracle GoldenGate is a trademark of Oracle. TwinCommit is not affiliated with or endorsed by Oracle. This page describes TwinCommit's capabilities. Ask each vendor to confirm how their product handles the questions above.
Run TwinCommit next to Oracle GoldenGate this week.
Download the free Developer edition, or have one of our replication engineers walk you through a migration plan.