Keep performance tuning scripts with explanations, before-values, undo steps, and a configuration history your team can compare later.
How Does QUOTED_IDENTIFIER Works in SQL Server? – Interview Question of the Week #217
How Does QUOTED_IDENTIFIER Works in SQL Server? I explain it in very simple words, using SELECT “Order By” with the setting OFF and then ON.
Do Queries Always Respect Cost Threshold of Parallelism? – Interview Question of the Week #216
Do queries always respect the Cost Threshold for Parallelism? Not always, and a quick AdventureWorks test with the execution plan shows why.
Plan Cache Size in SQL Server: List Every Cached Plan
Plan cache size shows how much memory each cached query plan takes. This post lists every plan in one database with its size, its text and its execution count. It also explains why the cache entry and the plan itself report different sizes.
Watching Many Servers Without Buying Anything
Use scheduled snapshots to monitor SQL Server with central storage, failure reporting, and four focused queries collected every five minutes.
SQL SERVER – Priority Boost and SSMS 18
My client thought SQL Server dropped the Priority Boost setting. It did not. Here is what changed with Priority Boost and SSMS 18 on the Processors page.
How to Know When Memory Constraints are Negatively Impacting CPU in SQL Server? – Interview Question of the Week #216
How do you know when memory constraints are hurting CPU in SQL Server? Someone asked me this loaded question before a Health Check, and here is my answer.