As mentioned in the documentation, 100% of the CPU utilization metric represents the full capacity of the database node. This means the metric reflects the total CPU usage across all available vCPUs in the database instance. Also, this metric cannot exceed 100%.

Consider an M21 container with two vCPUs. The database CPU utilization metric reports the total CPU capacity utilization rather than individual vCPU usage. If the total capacity is two vCPUs and the CPU utilization metric shows 50%, this represents the average CPU usage across both vCPUs. This could mean one core is fully utilized while the other remains idle, or both cores may be operating at 50% each. Regardless of distribution, the reported metric will display 50% CPU utilization.