AWS Oracle Classic RDS Features & Limitataion

Edition and licensing => License included (SE2) or BYOL (SE2/EE)

Multitenant PDB in CDB (licence & Maint cost reduction)  => 1 PDB

No of Database => 1 DB per RDS instance

Applications require access to underlying OS =>  N/A

Applications require access to underlying DB Env =>  N/A

sysdba privilege access  => N/A

Huge Pages (better Performance) => N/A

Local Undo => N/A

Data Guard Max Availability => with Multi AZ (no access on secondary) 

RDS database Patching =>  AWS Managed

Create a Multi-AZ deployment => Yes

Change CPU cores and threads per core on DB instance class => Yes

Turn on storage autoscaling => Yes

Automatic minor version upgrade => Yes

Kerberos authentication. => Yes

Performance Insights => Yes

TDE Encryption => Yes

Billing can be stopped => Yes

Scaling AWS          => Yes

High availability =>  AWS Managed

Database backups =>  AWS  Managed

Database software install => AWS Managed

OS patching =>  AWS Managed

OS installation => AWS Managed

Storage Limit => 64TB