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Performance Tuning with SQL Server Dynamic Management Views
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  • Title Performance Tuning with SQL Server Dynamic Management Views
  • Author(s) Louis Davidson, Tim Ford
  • Publisher: Red gate books (September 1, 2010)
  • Paperback 344 psges
  • eBook ePub Format
  • Language: English
  • ISBN-10: 1906434476
  • ISBN-13: 978-1906434472
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Book Description

Dynamic Management Views (DMVs) are a significant and valuable addition to the DBA's troubleshooting armory, laying bare previously unavailable information regarding the under-the-covers activity of your database sessions and transactions. Why, then, aren't all DBAs using them? Why do many DBAs continue to ignore them in favour of "tried and trusted" tools such as sp_who2, DBCC OPENTRAN, and so on, or make do with the "ready made" reports built into SSMS? Why do even those that do use the DMVs speak wistfully about "good old sysprocesses"? There seem to be two main factors at work. Firstly, some DBAs are simply unaware of the depth and breadth of the information that is available from the DMvs, or how it might help them troubleshoot common issues.

This book investigates all of the DMVs that are most frequently useful to the DBA in investigating query execution, index usage, session and transaction activity, disk IO, and how SQL Server is using or abusing the operating system. Secondly, the DMVs have a reputation of being difficult to use. In the process of exposing as much useful data as possible, sysprocesses has been de-normalized, and many new views and columns have been added. This fact, coupled with the initially-baffling choices of what columns will be exposed where, has lead to some DBAs to liken querying DMVs to "collecting mystic spells". In fact, however, once you start to write your own scripts, you'll see the same tricks, and similar join patterns, being used time and again. As such, a relatively small core set of scripts can be readily adapted to suit any requirement. This book is here to de-mystify the process of collecting the information you need to troubleshoot SQL Server problems.

About the Authors
  • Louis Davidson has been in the IT industry for 15 years as a corporate database developer and data architect. Currently he is the Data Architect for Compass Technology in Chesapeake, Virginia, supporting the Christian Broadcasting Network and NorthStar Studios in Nashville, Tennessee. Louis has been a Microsoft MVP since 2004, and is an active volunteer for the Professional Association for SQL Server working in their Special Interest Groups. He is the author of SQL Server 2005 Database Design and Optimization.
  • Tim Ford is a senior database administrator with Spectrum Health in Grand Rapids, Michigan. He has been an active volunteer with The Professional Association for SQL Server (PASS) since 2002 and a certified solutions developer (MCSD) since 2001. Currently he is attempting to teach himself web development at In his free time he usually has a camera, game controller, spatula, guitar, handlebars, book, or beer in his hands. His wife and two young sons, Austen and Trevor keep him sane when not driving him completely crazy.
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