Avi Vallarapu talked about Optimizing a PostgreSQL database may be a challenge if some of the important parameters are ignored. And a bigger challenge may be the algorithm behind setting those parameters correctly. In my experience with PostgreSQL Consulting for more than a decade, I have seen a bigger list of parameters that are wrongly set or ignored. This talk details such a list of important PostgreSQL parameters considering the latest releases with some good description, that could drastically improve the performance graph when properly set. We shall also discuss some mathematical formulae and some extensions helpful to expose the diagnostic data for tuning these parameters.* This talk should help both the beginners and also PostgreSQL admins to go back and check if they have tuned these parameters correctly in their PostgreSQL environments.