Bug reference: 18415 Logged by: Andy Kosheen Email address: koderan@yandex.ru PostgreSQL version: 15.4 Operating system: Oracle Linux Server 8.4 Description:
In the process of logical replication from version 13.3 (on Ubuntu 16.04.6 LTS) to version 15.4 (on Oracle Linux Server 8.4), when most of the data has already been transferred, the following errors begin to occur, appearing endlessly until you stop the replication process (this situation occurs on databases larger than at least 50GB, even if there is a small number of transactions on the source database): 2024-03-20 03:19:41.410 +07 [3433858] LOG: logical replication apply worker for subscription "log_rep_sub" has started 2024-03-20 03:19:41.425 +07 [3433858] ERROR: could not start WAL streaming: ERROR: replication slot "log_rep_sub" does not exist
Suggest you check the publisher logs and see why the replication slot went away.
