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From Cyberlaw: Difficult Issues Winter 2010
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SQL SERVER PERFORMANCE TUNING

Sql server performance tuning is better handled through people who are been trained in database administration and database development. Before a person can proceed with the work he should first reflect on the index .You can do this by performing a correct evaluation coupled with the creation of an efficient catalog. This is because all indexes are supposed to work therefore one should check on any kind of index that isn't working or any that isn't there. If all indexes are working the performance will be improved.

The next phase entails examining the I/O distribution from the program in order to figure out the best percentage for the I/O fill. You should execute an object level evaluation and also carry out overall performance degree evaluation from table level

Wait stat analysis is very essential for database optimisation but many people don't view it as important because they lack knowing. You should therefore carry out advanced resource wait statistics analysis in order to optimize your database.

TempDB is the most crucial database with regards to performance tuning so it is essential for so that it is reviewed to be able to tune your database overall performance.

All of the level settings of the server need to be examined to become updated to adapt to the system overload.

It is very important to have the files of the database both MDF and NDF together with the record files examined. These files in the databases need to be checked to find the ones that are bringing about any kind of issues in the overall performance. This can need a comprehensive examination of all of the files found in every database.

You ought to also aim at easing fragmentation .This will simply be feasible if the optimal configurations from the databases are recognized.