PostgreSQL 12: Copying replication slots

Replication slots provide an automated way to ensure that the primary does not remove WAL segments until they have been received by all standbys, and that the

Why does postgresql have so many replication slots open? · disabled the subscription on the replica

postgresql drop replication slot Replication slots make sure that the new primary can carry on streaming changes from where the old primary left off This minimizes data loss

postgresql replication slot A replication slot is a feature in PostgreSQL that ensures that the master server will retain the WAL logs that are needed by the replicas