Reading an Exadata AWR Report: A Full Case Study from Symptom to Root Cause
AWR reports are simultaneously the most powerful and most misread performance tool in Oracle’s arsenal. Most DBAs jump straight to Top SQL, copy the SQL_ID, and start tuning — skipping the sections that tell them why that SQL became a problem in the first place. This case study walks through a realistic AWR from a production Exadata system, section by section, using a deliberately constructed problematic scenario. Every number is fabricated for illustrative purposes; every diagnostic conclusion is grounded in real Oracle internals. ...