Updating Your Billing Details
If you wish to change your billing details from the one you used during purchase or sign up, you can do so from the Account Management page in Infrastructure Classic Console or Applications Console.
If you're using the Infrastructure Console, then you can upgrade your promotion to a paid account from the Account Management page. See Changing Your Payment Method in Oracle Cloud Infrastructure documentation.
If you’ve purchased Oracle Cloud services through Oracle Sales, then contact your Oracle Sales representative to update your billing details.
Note that only a Cloud Account Administrator or a Buyer can update billing details.
The billing details that you can modify are the billing address and payment method.