Step-by-Step

1. Open your AWR report.
2. Find the “Instance Activity Stats” section.
3. Locate the following three metrics:
   • physical reads
   • db block gets
   • consistent gets
4. Plug the values into the formula above.
5. Multiply by 100 for a percentage.

A high ratio may look healthy but can mask inefficient access patterns. Use this metric as a supporting clue, not a primary diagnostic.