The Performance Hub Automatic Database Diagnostic Monitor (ADDM) tab includes controls to access the information stored by ADDM. ADDM analyzes the AWR data on a regular basis, then locates the root causes of performance problems, provides recommendations for correcting any problems, and identifies non-problem areas of the application.

Because AWR is a repository of historical performance data, ADDM can be used to analyze performance issues after the event, often saving time and resources that would be needed to reproduce a problem.

For more information see Using Performance Hub to Analyze Database Performance.