Automatic Workload Repository
Oracle's built-in repository of periodic database performance snapshots used for workload, wait-event, SQL, and resource analysis.
Technical Context
AWR is most useful for comparing intervals and identifying where database time is spent. A report is evidence, not a diagnosis by itself: workload changes, DB time, wait classes, top SQL, I/O, CPU saturation, and plan changes must be interpreted together.
Related Concepts
- Oracle wait event
- SQL tuning
- DB time
- execution plan