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Description

Oracle RDS replicas have two operating modes, mounted and open-read-only. This is configured via the ReplicaMode parameter of the CreateDBInstanceReadReplica API call. This option impacts the licensing of the oracle instances as the default operating mode of replicas is read-only which requires an Active Data Guard license. Mounted instances do not require this license.

New or Affected Resource(s)

• aws_db_instance

Potential Terraform Configuration

resource "aws_db_instance" "db" {
  identifier = "db-replica"
  ...
  replicate_source_db = "..."
  replica_mode        = "mounted"
  ...
}

References

• https://docs.aws.amazon.com/AmazonRDS/latest/UserGuide/oracle-read-replicas.html#oracle-read-replicas.creating-in-mounted-mode