Enable logical replication on Amazon RDS PostgreSQL®
If you have not enabled logical replication on RDS already, the
following instructions shows how to set the rds.logical_replication
parameter to 1 (true) in the parameter group.
- 
Create a parameter group for your RDS database.

 - 
Set the
rds.logical_replicationparameter to1(true) in the parameter group
 - 
Modify Database options to use the new DB parameter group:
RDS>Databases>Modify
 
Apply immediately or a reboot is required to reflect the configuration change into wal_level.