1. 7 Layer Performance Issue
Chad Crawford
Henry Schein Practice Solutions

2. The Autobiography Member of Fortune 500 (#303)
#10 on Barron’s list of best performing companies
#1 on Fortune’s 2012 list of “World’s Most Admired Companies” in our sector
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12/28/2018 |
7 Layer Performance Issue

3. The Setup Friday – typically lighter load
No deployments or code changes
One query running a very long time (minutes)
Multiple copies executing
History indicates it was ok yesterday

4. The Plan Walk through diagnostic patterns For each one: What is it?
How to detect it?
How to resolve it?

5. Let’s Get Going!
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12/28/2018 |
7 Layer Performance Issue

6. The Seven Layers Parameter Sniffing Non-uniform Statistics
Out-of-date Statistics
Unnecessary Table Spool
Force Index / Plan
Cardinality Estimation
Service Pack

7. Questions?