Not able to find Oracle as an option to add database

So i have a AWS's RDS database hosted. The original database type is of Oracle. I am not able to find Oracle in the options menu while adding a database. Is this paid? Because as far as i know they mentioned in their website that there are 20+ types of databases available for free, even when we're using the docker Image of theirs.

no, it's because you haven't added the Oracle driver in the Metabase instance