Introduction: Why Oracle Execution Plan Instability Hurts DBAs Oracle execution plan instability is one of those issues that looks harmless in a test environment but can turn into a production fire in seconds. One moment a query runs in milliseconds,… Read More »Top 7 Strategies to Tame Oracle Execution Plan Instability
Introduction: Why Oracle RMAN Backup and Recovery Matters for OCP/OCA When I prepared for my Oracle certifications, it quickly became obvious that Oracle RMAN backup and recovery was not just another topic on the blueprint – it was at the… Read More »Oracle RMAN Backup and Recovery: Exam-Focused Guide for OCP/OCA
Introduction: Why Oracle Performance Tuning and Backup Recovery Mistakes Kill Your OCP Score When I first started preparing for OCP, I underestimated how much weight Oracle places on real-world thinking around performance tuning and backup recovery. It’s not just about… Read More »Top 7 Oracle Performance Tuning and Backup Recovery Mistakes to Avoid for OCP
Introduction: Why AWR and ASH Are Essential for Slow SQL Diagnosis When a critical query suddenly slows down, most teams feel the pain long before they know why. In my own work diagnosing slow SQL with AWR and ASH, I’ve… Read More »Top 7 Proven Ways to Diagnose Slow SQL with AWR and ASH Reports