| Type: | integer |
| Default: | 2 |
| Min: | 0 |
| Max: | 1024 |
| Context: | sighup |
| Restart: | false |
| Since: | 16 |
Maximum number of parallel apply workers per subscription. This parameter controls the amount of parallelism for streaming of in-progress transactions with subscription parameter streaming = parallel.
The parallel apply workers are taken from the pool defined by max_logical_replication_workers.
The default value is 2. This parameter can only be set in the postgresql.conf file or on the server command line.