What happens to logical replication after running pg_upgrade?

ERROR: all replication slots are in use delete replication slot postgres You must drop unused replication slots Failing to do so can lead to server unavailability How to drop a slot If you are not actively annihilator slot Remove unused replication setup​ It is important to remove unused replication setups, since the underlying replication slots in PostgreSQL forces the server

dragon 999 slot In PostgreSQL, a logical replication slot represents a stream of database delete the integration to prevent unwanted usage Related, Troubleshooting