From the OCI Console for an "Oracle Autonomous Database," you can "Scale up/down CPU" (A) to adjust compute resources dynamically and "Increase Storage allocated for Database" (D) to expand capacity, both with no downtime. "Increase Network Bandwidth" (B) is not a console-adjustable parameter (managed by Oracle), and "Scale up/down Memory" (C) is not independentlyconfigurable (tied to CPU scaling). Oracle’s documentation confirms CPU and storage scaling as user-controlled actions.
The "MySQL Database Service" on Oracle Cloud Infrastructure uses "Block Volume Storage" (C) for all data storage. Block Volume provides high-performance, persistent block storage that is directly attached to compute instances running the MySQL database, ensuring low-latency access for transactional and operational workloads. "Archive Storage" (A) is for long-term, infrequently accessed data, "Object Storage" (B) is for unstructured data, and "File Storage" (D) is for shared file systems—none of which suit the primary storage needs of a MySQL database. Oracle’s MySQL Database Service documentation confirms Block Volume as the default storage platform.
[References: OCI MySQL Database Service Documentation, Oracle Storage Services Overview., ]