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For years, SQL Plan Management was a powerful but somewhat manual tool in the DBA’s belt — capture baselines, evolve them, accept or reject new plans… rinse and repeat. It worked, but it required attention.With 23ai, Oracle takes a bold step toward self-driving databases: Automatic SQL Plan Management. The database now watches for regressions, evaluates…
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Short reminder, in the two previous articles I made up two test scenarios of delving into the Auto SQL Plan Management. In the first part I constructed some fairly obvious conditions for Automatic SQL Plan Management to operate — it worked exactly as expected.The choice was based on obvious metrics: lower CPU usage, fewer logical…
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In the previous article I went through setting up the Auto-SPM functionality, so turned the SPM to true “auto”. I then constructed some fairly obvious conditions for Automatic SQL Plan Management to operate.And yes — it worked exactly as expected. The engine kicked in on its own, activated a clearly better SQL plan, and did…
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Latest posts
- Auto SQL Plan Management (look under the hood) – part 1
- Auto SQL Plan Management (look under the hood) – part 3
- Auto SQL Plan Management (look under the hood) – part 2
- Converting of CPU Costing in the Cost Based Optimizer 10053 Trace File
- Why this extra physical read while performing index scan?
- Clustering Factor (CLUF) – the anatomy and its impact on performance – part4
- Clustering Factor (CLUF) – the anatomy and its impact on performance – part3
- Clustering Factor (CLUF) – the anatomy and its impact on performance – part2
- Clustering Factor (CLUF) – the anatomy and its impact on performance – part1
- Resp in the CBO 10053 Trace File