Explanation
You can open a support service request with Oracle Support
To create a service request:
Go to My Oracle Support and sign in.
If you are not signed into Oracle Cloud Support, click Switch to Cloud Support at the top of the page.
Click Create Service Request.
Select the following from the displayed menus:
Service Type: Select Oracle Cloud Infrastructure from the list.
Service Name: Select the appropriateoption for your organization.
Problem Type: Select your problem type from the list.
Enter your contact information.
Enter a Description, and then enter the required fields specific to your issue. For most Oracle Cloud Infrastructure issues you need to include the OCID (Oracle Cloud Identifier) for each resource you need help with. See Locating Oracle Cloud Infrastructure IDs for instructions on locating these.

Reference:
https://www.youtube.com/watch?v=KKDLIjy2yJM&list=PLKCk3OyNwIzuHYigVbdtDOZOfChcotfj2&index
=7

Reference: https://www.oracle.com/cloud/storage/data-transfer.html

Explanation
Oracle DataSafe is a unified control center for your Oracle databases which helps you understand the sensitivity of your data, evaluate risks to data, mask sensitive data, implement and monitor security controls, assess user security, monitor user activity, and address data security compliance requirements.
Whether you're using an Autonomous Database or an Oracle DB system, Oracle Data Safe delivers essential data security capabilities as a service on Oracle Cloud Infrastructure.

Archive Storage Tier (Cold):
* Seldom or rarely accessed data but must be retained and preserved for long periods of time
* 10X cheaper than Standard Tier ( $0.0026 v/s $0.0255 Gb/month)
* 90 days minimum retention requirement
* Objects need to be restored before download; Time To First Byte (TTFB) after restore request is made:
4 Hours
* Archive Bucket can't be upgraded to Standard storage tier