When a database instance runs on a virtual machine (VM), you can register the VM as well as the database instance. When you register a VM, you can view performance metrics from the VM, the physical host, and the storage system. DPA displays metrics from all these layers of infrastructure on a single screen. You can use this data to correlate events in the underlying layers with performance issues in the database instance.
Monitoring a VM requires a VM license.
In most cases, DPA automatically detects the database instances running on the virtual machine. On the DPA home page, the VM icon is displayed next to the each database instance name.
If DPA does not automatically associate a database instance with the VM that it runs on, you can manually link it.
Click Yes at the confirmation message, and then click OK.
The database instance is listed under Running in a VM, and the VM icon is displayed next to the name.
After you register a VM, you can view recent performance data immediately. DPA must gather data for a few days before it shows performance trends and baselines.
If the trial period is over, you must allocate a VM license to the database instance before you can view VM performance data.
In the Database Instance list, click a database instance.
DPA shows performance data from the database instance followed by metrics from the VM, the physical host, and the storage layer. Use these graphs to correlate waits in the database instance with events in the underlying layers.