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

Monitoring system health using system statistical functions


SQL Server has a set of few useful system statistical functions that provide certain statistics related to SQL Server health. These functions are useful for checking and monitoring the health of the server.

Suppose that, in your database environment, one of the web applications is processing records row-by-row. In order to process each row, the application makes a round trip to the database. This means that to process each row there is a new connection. In order to troubleshoot the issue, you want to monitor at regular intervals the number of connections that are taking place. This example will describe how to perform the said task.

Getting ready

In this recipe we will use following functions:

  • @@CONNECTIONS

  • @@TIMETICKS

  • @@CPU_BUSY

  • @@IDLE

  • @@IO_BUSY

  • @@PACK_RECEIVED

  • @@PACK_SENT

  • @@PACKET_ERRORS

  • @@TOTAL_READ

  • @@TOTAL_WRITE

  • @@TOTAL_ERRORS

In this example, we will use all these functions, and create and execute a script several...