Book Image

Microsoft SQL Server 2012 Performance Tuning Cookbook

Book Image

Microsoft SQL Server 2012 Performance Tuning Cookbook

Overview of this book

As a DBA you must have encountered a slow running application on SQL Server, but there are various factors that could be affecting the performance. If you find yourself in this situation, don't wait, pick up this book and start working towards improving performance of your SQL Server 2012. SQL Server 2012 Performance Tuning Cookbook is divided into three major parts -- Performance Monitoring, Performance Tuning, and Performance Management--that are mandatory to deal with performance in any capacity. SQL Server 2012 Performance Tuning Cookbook offers a great way to manage performance with effective, concise, and practical recipes. You will learn how to diagnose performance issues, fix them, and take precaution to avoid common mistakes. Each recipe given in this book is an individual task that will address different performance aspects to take your SQL Server's Performance to a higher level.The first part of this book covers Monitoring with SQL Server Profiler, DTA, System statistical function, SPs with DBCC commands, Resource Monitor & Reliability, and Performance Monitor and Execution Plan. The second part of the book offers Execution Plan, Dynamic Management Views, and Dynamic Management Functions, SQL Server Cache and Stored Procedure Recompilations, Indexes, Important ways to write effective TSQL, Statistics, Table and Index Partitioning, Advanced Query tuning with Query Hints and Plan Guide, Dealing with Locking, Blocking and Deadlocking and Configuring SQL Server for optimization to boost performance.The third and final part gives you knowledge of performance management with help of Policy Based Management and Management with Resource Governor.
Table of Contents (28 chapters)
Microsoft SQL Server 2012 Performance Tuning Cookbook
Credits
About the Authors
Acknowledgement
Acknowledgement
About the Reviewers
www.PacktPub.com
Preface
Index

Configuring "Optimize for Ad hoc Workloads"


Execution of any query or stored procedure for the first time creates an execution plan, which is stored in SQL Server 's procedure cache memory. It happens many times that we execute a simple query once, which is not even going to be used again anytime soon and it may never run again in future too even execution plan generated for that query will consume space in procedure cache. You may run out of cache sometimes, due to lack of memory, which affects performance. This was really a big issue till SQL Server 2005. In order to remedy this, Microsoft introduced "Optimize for Ad hoc Workloads" in SQL Server 2008, and it is still available in SQL Server 2012. This setting is instance-wide in SQL Server.

Note

In one of my performance tuning consultation projects, I had observed the company's SQL developer making and testing a query directly on the production server. If they didn't get the required results, they'd change the query and re-test it on the...