Automatic Workload Repository (AWR) collects and analyzes performance statistics. You can use AWR to generate statistical analysis reports and database performance reports for a specified period of time from statistics such as dynamic views of databases.
In addition to the real-time views and functions listed in Check views, PolarDB also provides historical data collected from these real-time views. You can use the historical data to generate AWR reports that are similar to Oracle. For more information about historical data and AWR reports, see AWR usage.