Understanding Compartments
Compartments help you organize resources to make it easier to control access to them.
The root compartment is created for you by Oracle when your tenancy is provisioned. An administrator can create more compartments in the root compartment and then add the access rules to control which users can see them and act in them. To manage compartments, see Managing Compartments.
The list of compartments in the filter shows only the compartments that you have permission to access. Compartments can be nested, and you might have access to a compartment but not its parent.
After you select a compartment, the Console displays only the resources that you have permission to view in the compartment for the region that you are in. To see resources in another compartment, you must switch to that compartment. To see resources in another region, you must switch to that region, or use the tenancy explorer.
For more details about compartments, see Learn Best Practices for Setting Up Your Tenancy and Managing Compartments.