Question 12 Explanation

Autoscaling

Autoscaling enables you to automatically adjust the number of Compute instances in an

instance pool based on performance metrics such as CPU utilization. This helps you provide

consistent performance for your end users during periods of high demand, and helps you

reduce your costs during periods of low demand.

Prerequisites

- You have an instance pool. Optionally, you can attach a load balancer to the instance pool. For steps to create an instance pool and attach a load balancer, see Creating an Instance Pool.

- Monitoring is enabled on the instances in the instance pool. For steps to enable monitoring, see Enabling Monitoring for Compute Instances.

- The instance pool supports the maximum number of instances that you want to scale to. This limit is determined by your tenancy's service limits.

About Service Limits and Usage

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 per availability domain. These limits are generally established with your Oracle sales representative when you purchase Oracle Cloud Infrastructure.

Compartment Quotas

Compartment quotas are similar to service limits; the biggest difference is that service limits are set by Oracle, and compartment quotas are set by administrators, using policies that allow them to allocate resources with a high level of flexibility.