To optimize the performance of your database, you need to monitor and tune. You determine the performance baseline, how SQL Server is currently performing, through monitoring. Your optimization process includes making changes and then monitoring their effect. This means adjusting two overlapping performance areas, that is, database server performance and query performance.
Basit's SQL Server Tips 
Keeping the server on its optimum performance is not an easy task. we have so much to consider and to look up to. that’s why its very important to arm ourselves with knowledge be updated on the latest on server monitoring.
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