GA ANNOUNCEMENT - Change Database Name For An Autonomous Database
Autonomous Database offers quick and easy provisioning which is an integral part of an agile development framework.
This agility can be further accelerated with the help of a new feature - database rename - which makes it significantly easier and faster to deploy dev/test instances, cloned from production, by avoiding the need to change connect strings in supporting application code (blog post about a real-world use case coming soon on blogs.oracle.com/datawarehousing).
The rename pop-up form from the OCI ADB instance details page
End-to-end flow of renaming an ADB instance
DOC: Rename Autonomous Data Warehouse Instance,