CPU Busy Alarm
The CPU Busy alarm occurs when the total CPU utilization of the system exceeds a threshold. The CPU may encounter a large number of requests, or you may have un-tuned SQL, which uses excessive amounts of CPU.
To determine where excessive amounts of CPU are being used, you can use:
- The server’s operating system tool, such as top on Unix or Task Manager on Windows, to find out which processes use the most CPU. 
- The Top Sessions drilldown to find out if a particular session is using CPU excessively. 
- The SQL & Application Workload drilldown to find out which SQL uses a lot of CPU. 
 
Related Topics
Top Sessions Page 
SQL & Application Workload | Top SQL Page