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SQL Server 2012 – Database Engine Tuning Advisor Enhancements

Antonios Chatzipavlis
Wednesday 16 November 2011

Ένα από τα εργαλεία τα οποία έχουμε στην διάθεση μας για να κάνουμε tuning τον SQL Server είναι και ο Database Engine Tuning Advisor (DTA).

Ένα αρκετά καλό εργαλείο που μπορείς εύκολα να πάρεις σχεδόν άμεσα απάντηση που θα σου βελτιώνει το performance στα queries σου.

Μέχρι τώρα η τροφή που έπρεπε να δώσεις στο εργαλείο αυτό ήταν ή ένα trace workload ή ένα script με τα queries που ήθελες να ελέγξεις.

Πλέον όμως μπορεί να πάρει τροφή διαβάζοντας την plan cache που όπως γνωρίζουμε περιέχει τα execution plans των queries που έχουμε εκτελέσει.

Εξ ορισμού παίρνει τα τελευταία 1000 τα οποία και αναλύει, σε συνδυασμό φυσικά με την βάση που έχεις επιλέξει .

Αυτό φυσικά μπορεί να το αλλάξεις αρκεί να ξεκινήσεις το DTA με το option n



Antonios Chatzipavlis

Antonios Chatzipavlis

Antonios is a Data Solutions Consultant and Trainer. He has been working in IT since 1988. In his career, he has worked as senior developer, IT Manager, Solutions Architect and IT Consultant. Since 1995 he has been devoted on new technologies and software development tools, mainly by Microsoft, either by training company staff and colleagues or assisting them in design, development and implementation as a consultant or chief developer. He has focused in Databases and Data Science since 1995. He specialized in Microsoft SQL Server since version 6.0 in areas like SQL Server Internals, Database Design and Development, Business Intelligence and in 2010 he has started working with Azure Data Platform, NoSQL databases, Big Data Technologies and Machine Learning. He is an active member of many IT communities in Greece, answering colleagues' questions and writing articles in his web site. He is the owner of SQLschool.gr which is a community portal with a lot of information about Microsoft SQL Server. He has been a Microsoft Certified Trainer (MCT) since 2000. Microsoft honored him as MVP on Data Platform due to his activities in SQL Server since 2010. He holds a large number of Microsoft Certifications and Microsoft SQL Server Certifications since version 6.5.


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