Troubleshoot replication lags in RDS for PostgreSQL

production environment that unable to get around to apply There are two ERROR messages observed here 'replication slot is active for PID'

Examples Advancing a physical replication slot: postgres=# SELECT slot_name, slot_type, active, restart_lsn, confirmed_flush_lsn FROM pg_replication_slotsgx

error 1089 Monitoring Replication Slots Each BDR node keeps: One replication slot per active BDR peer; One group replication slot For example: Toggle Wrap Copy bdrdb

error slot This option causes the command to wait if the slot is active until it becomes inactive, instead of the default behavior of raising an error BASE_BACKUP