In Oracle Database 19c, a powerful new feature arrives: Real-Time Statistics. Its main goal is to reduce the chance that the optimizer makes poor decisions because of stale statistics — especially in scenarios where data changes rapidly between scheduled statistics gathering cycles. Real-time statistics build on earlier features like online statistics gathering for bulk loads […]
Oracle Database performance tuning is a dance of insight and intuition, a symphony of numbers and narratives.In this blog, we unravel the Automatic Workload Repository (AWR) report, one of the DBA’s most powerful instruments for diagnosing bottlenecks, isolating pain points, and transforming sluggish systems into seamless symphonies. 1. What Is the AWR Report? The Automatic […]
A typical AWR report is structured into several sections. Here’s a breakdown of the most critical ones you should focus on. Report Summary This is the first section and provides a high-level overview. It includes: Wait Events Statistics This is arguably the most important section. It identifies where the database spent most of its time […]
1. What is Conflict Detection and Resolution (CDR) in bidirectional replication? Conflict Detection and Resolution (CDR) is a mechanism in Oracle GoldenGate to handle data conflicts that arise in bidirectional (active-active) replication setups, where the same table is being updated at multiple sites simultaneously. 🧠 Why is CDR needed? In active-active replication, changes can occur […]