Licensing option and limitations in RDS custom for Oracle

Hi,

RDS Custom for Oracle supports Enterprise Edition (EE) and Standard Edition 2 (SE2) on the BYOL model. Since the vCPU is limited to 16 or fewer on the SE2 it is good to have an analysis on the available instance classes on the RDS comparing them to your existing on-prem architecture.

The following are the limitations for Standard Edition 2:

1. Oracle Data Guard isn't supported. Thus, you can't create Oracle read replicas.

2. You can only use DB instance classes that have 16 or fewer vCPUs (up to 4xlarge).
   

3. A CDB instance on Standard Edition 2 supports a maximum of 3 tenant databases.
   

4. You can't migrate data between Enterprise Edition and Standard Edition 2.
   

Below link can provide you more details on the various options. https://docs.aws.amazon.com/AmazonRDS/latest/UserGuide/custom-oracle-feature-support.html