When your server experiences LCK% waits, it means queries are waiting on other queries to release their locks. Most of the time, you can work around this by doing index tuning. However, it’s tricky to understand whether LCK% waits mean you have too many indexes, or not enough. In this lecture, we’ll do a series…
2.5 Tuning Indexes to Avoid Blocking
When your server experiences LCK% waits, it means queries are waiting on other queries to release their locks. Most of the time, you can work around this by doing index tuning. However, it’s tricky to understand whether LCK% waits mean you have too many indexes, or not enough. In this lecture, we’ll do a series…
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- 0.1 Prerequisites Before the Class (~4 hours)
- 0.2 Download the Slides
- 1.2 The D.E.A.T.H. Method: Dedupe and Eliminate
- 1.3 Why Index Read & Write Numbers Are Wrong
- 1.4 Lab 1 Setup: Dedupe and Eliminate
- 1.4b Lab 1: Dedupe and Eliminate – Brent Does It
- 1.5 The D.E.A.T.H. Method: Tuning Indexes for Specific Queries
- 1.6 Foreign Key and Check Constraints
- 1.7 Lab 2 Setup: Tuning Indexes for Specific Queries
- 1.8 Lab 2: Tuning Indexes for Specific Queries – Brent Does It
- 2.1 Adding Indexes with the DMVs
- 2.2 Tuning to Avoid Key Lookups and Residual Predicates
- 2.3 Lab 3 Setup: Adding Indexes with Clippy and the DMVs
- 2.3b Lab 3: Adding Indexes with Clippy and the DMVs – Brent Does It
- 2.4 The D.E.A.T.H. Method – Heaps and Clustered Indexes
- 2.6 Lab 4 Setup: Solving Blocking with Indexes
- 2.6 Lab 4: Solving Blocking with Indexes – Brent Does It
- 3.1 Filtered Indexes, Indexed Views, and Computed Columns
- 3.2 Lab 5 Setup: Leveraging Artisanal Indexes
- 3.2b Lab 5: Leveraging Artisanal Indexes – Brent Does It
- 3.3 Lab 6 Setup and Final Lessons
- 3.4 Lab 6: Doing the D.E.A.
- 3.5 Lab 6: Doing the D.E.A.T.
- About the Lab Exercises
- Bonus: Storytelling Time
- Bonus: Tips from the Index Sommelier