# molt-replicator

> Claude/Codex skill by [@cockroachdb](https://omgskills.com/library/cockroachdb/index.md) · 4 stars · Updated 2026-10-09

Guide for using the CockroachDB replicator to continuously replicate changes from PostgreSQL, MySQL, or Oracle to CockroachDB after an initial molt fetch data load. Use when setting up CDC replication, configuring pglogical/mylogical/oraclelogminer, or managing the fetch → replicator cutover workflow.

Tags: claude, cockroach-cloud, cockroachdb, developer-tools

## Install

```sh
git clone https://github.com/cockroachdb/claude-plugin /tmp/claude-plugin && ln -s /tmp/claude-plugin/skills/cockroachdb-onboarding-and-migrations/molt-replicator ~/.claude/skills/molt-replicator
```

## From README

molt replicator Continuous change-data-capture (CDC) replication from source databases to CockroachDB. Run after molt fetch completes the initial bulk load. Important: replicator is a separate binary from molt. It is not invoked by molt fetch. The data-load-and-replication mode in molt fetch is deprecated — use replicator directly instead. Architecture Replicator reads changes from the source, buffers them in a staging schema on the target CRDB cluster, and applies them to the target tables. Subcommands by Source | Source | Command | |--------|---------| | PostgreSQL | replicator pglogical | | MySQL | replicator mylogical | | Oracle | replicator oraclelogminer | | Kafka | replicator kafka | | Cloud storage | replicator objstore | | CockroachDB CDC | replicator start | Full Fetch → Replicator Workflow Step 1: Initial bulk load with molt fetch drop-on-target-and-recreate drops any existing target tables first; run this only against a fresh or empty target.

## Links

- HTML page: https://omgskills.com/library/cockroachdb/claude-plugin/skills/cockroachdb-onboarding-and-migrations/molt-replicator/
- GitHub: https://github.com/cockroachdb/claude-plugin
- Author: [@cockroachdb](https://omgskills.com/library/cockroachdb/index.md)

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