OracleDatabasePerformanceHack DynamicSampling

Описание: 🚀 Oracle Database Performance Hack: Eliminate Full Table Scans with Dynamic Sampling
Transform slow queries into lightning-fast performers! Learn how to use Dynamic Sampling to fix terrible execution plans caused by stale statistics. Real case study: 45 minutes → 30 seconds (90x improvement).

⏱️ TIMESTAMPS: 0:00 - Introduction | 0:45 - The Problem | 3:21 - Dynamic Sampling Explained | 5:05 - Live Demo | 9:38 - Advantages | 12:55 - Disadvantages | 14:51 - Best Practices | 19:23 - Monitoring | 27:12 - Long-Term Solution | 29:02 - Recap

What You'll Learn:
✅ How to identify stale statistics causing poor performance
✅ Implementing dynamic sampling (levels 2-11) with complete SQL scripts
✅ When to use it (data warehouses, ETL) vs when to avoid it (OLTP)
✅ Monitoring techniques and troubleshooting
✅ Real results: 99.5% cost reduction, 170x faster queries

📥 Resources: Complete SQL scripts & checklist: https://sanjaikumar15.my.canva.site/p...

⚠️ Important: Covers both advantages AND disadvantages (parse time overhead, cursor issues) so you can make informed decisions.

🔗 Connect: LinkedIn:   / sanjai-kumar-aa557315   / | Website: https://sanjaikumar1.github.io/my-por...

💬 Have you used dynamic sampling? Share your results in the comments!
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