Performance tuning is a tricky part. We need to analysis all points of view. Sometimes it is an easy fix and can be solved in a minute and sometimes it take a day or more to find and fix. I received many emails for performance tuning help. It has a variety of questions, that how can we tune a query and how to find out what is going on in the server, since my application team is does not give a slow running code. The query only slowdown in some time period. My server is banging all time above 95% of resources. Nowadays, every business has a tool that…