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SQL Server 2008 Database Engine Tuning Advisor

Posted on 2014-02-12
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I regularly use the Database Engine Tuning Advisor to determine what index changes should be made to our SQL Server 2008 database.  I usually add whatever indexes it recommends but lately, along with index additions, it lists indexes that should be dropped.  I must say I'm a little hesitant to start dropping indexes.

Should I follow the recommendations or is there a better tool to use.  I'm a programmer reluctantly performing dba duties and am in need of advice.
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Question by:Clinton Smith
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Surendra Nath earned 2000 total points
ID: 39853470
it is not always a good practice to follow the tuning advisor blindly..

For example if the tuning advisor suggests you to create 100 different indexes on a table ( hypothetically)... and if you create them, then it will cause an issue in write performance.

It is always a good practice, to create indexes suggested by the tuning advisor and check the performance of the overall system with the benchmark of the performance that is already created before the index is created.

if the index slows down the process then it is better to remove the index and if it increases then you have to consider the size occupied by the index vs performance gain.

There are many other aspects to be considered.
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by:Clinton Smith
ID: 39859928
Thank you.
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