Check Tenancy Service Limits
Check the service limit for your tenancy before creating the components necessary for cloud scaling.
When you sign up for Oracle Cloud Infrastructure, a set of service limits are configured for your tenancy. The service limit is the quota or allowance set on a resource. For example, your tenancy is allowed a maximum number of compute instances (virtual machines) per availability domain. These limits are generally established with your Oracle sales representative when you purchase Oracle Cloud Infrastructure. Oracle documentation can be found at Service Limits and Regions and Availability Domains.
When you reach the service limit for a resource, you receive an error when you try to create a new resource of that type. You cannot create a new resource until you are granted an increase to your service limit or you terminate an existing resource.
- Login to the Oracle Cloud Infrastructure console.
-
Choose the region where the previously created VCN is hosted.
Figure 1. Select a Region 
-
Click
located in the upper left-hand corner of the web
page.
- Click .
- Scroll down to the Service Limits section.
-
Click Compute.
Availability domains (data centers) for the region are displayed. For each resource (VM shape) the number of nodes that can be deployed in the corresponding availability domains are displayed. In the below example, three nodes can be deployed in each data center in the us-phoenix-1 region for the VM Standard1.1 shape.
Figure 2. Virtual Machine Type Limits 
- Verify that the appropriate service limits are set for your tenancy based on the VM shape chosen for the virtual machine and the region's availability domains.