SQL SERVER 2008

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Professional <strong>SQL</strong> Server® 2012 Internals and Troubleshooting Published by John Wiley & Sons, Inc. 10475 Crosspoint Boulevard Indianapolis, IN 46256 www.wiley.com Copyright © 2013 by John Wiley & Sons, Inc., Indianapolis, Indiana Published simultaneously in Canada ISBN: 978-1-118-17765-5 ISBN: 978-1-118-22730-5 (ebk) ISBN: 978-1-118-24027-4 (ebk) ISBN: 978-1-118-26490-4 (ebk) Manufactured in the United States of America 10 9 8 7 6 5 4 3 2 1 No part of this publication may be reproduced, stored in a retrieval system or transmitted in any form or by any means, electronic, mechanical, photocopying, recording, scanning or otherwise, except as permitted under Sections 107 or 108 of the 1976 United States Copyright Act, without either the prior written permission of the Publisher, or authorization through payment of the appropriate per-copy fee to the Copyright Clearance Center, 222 Rosewood Drive, Danvers, MA 01923, (978) 750-8400, fax (978) 646-8600. Requests to the Publisher for permission should be addressed to the Permissions Department, John Wiley & Sons, Inc., 111 River Street, Hoboken, NJ 07030, (201) 748-6011, fax (201) 748-6008, or online at http://www.wiley.com/go/permissions. Limit of Liability/Disclaimer of Warranty: The publisher and the author make no representations or warranties with respect to the accuracy or completeness of the contents of this work and specifi cally disclaim all warranties, including without limitation warranties of fi tness for a particular purpose. No warranty may be created or extended by sales or promotional materials. The advice and strategies contained herein may not be suitable for every situation. This work is sold with the understanding that the publisher is not engaged in rendering legal, accounting, or other professional services. If professional assistance is required, the services of a competent professional person should be sought. Neither the publisher nor the author shall be liable for damages arising herefrom. The fact that an organization or Web site is referred to in this work as a citation and/or a potential source of further information does not mean that the author or the publisher endorses the information the organization or Web site may provide or recommendations it may make. Further, readers should be aware that Internet Web sites listed in this work may have changed or disappeared between when this work was written and when it is read. For general information on our other products and services please contact our Customer Care Department within the United States at (877) 762-2974, outside the United States at (317) 572-3993 or fax (317) 572-4002. Wiley publishes in a variety of print and electronic formats and by print-on-demand. Some material included with standard print versions of this book may not be included in e-books or in print-on-demand. If this book refers to media such as a CD or DVD that is not included in the version you purchased, you may download this material at http:// booksupport.wiley.com. For more information about Wiley products, visit www.wiley.com. Library of Congress Control Number: 2012946050 Trademarks: Wiley, the Wiley logo, Wrox, the Wrox logo, Wrox Programmer to Programmer, and related trade dress are trademarks or registered trademarks of John Wiley & Sons, Inc. and/or its affi liates, in the United States and other countries, and may not be used without written permission. <strong>SQL</strong> Server is a registered trademark of Microsoft Corporation. All other trademarks are the property of their respective owners. John Wiley & Sons, Inc., is not associated with any product or vendor mentioned in this book.
For Ava and Leighton, who missed their daddy during this project. I promise I’ll make it up to you. Christian Bolton To my best friend and new wife, Claire, thanks for your enduring support and patience. All my love, Justin. Justin Langford To my mum, and Colin. Gavin Payne I would like to dedicate my contribution to the book to my mom and dad. Without their support, I wouldn’t have been able to devote the kind of time I do in my quest for everyday learning. A special note of thanks is due to my mentors, who have made it possible for me to learn about this ever-evolving product in a seamless manner. Amit Banerjee For Roslyn. Rob Farley
Page 3: PROFESSIONAL SQL SERVER® 2012 INTE
Page 7: PROFESSIONAL SQL Server ® 2012 Int
Page 12 and 13: now lives in the South of England,
Page 15 and 16: ABOUT THE TECHNICAL EDITORS ROBERT
Page 17: CREDITS EXECUTIVE EDITOR Robert Ell
Page 20 and 21: I WANT TO ACKNOWLEDGE my wife and c
Page 22 and 23: CONTENTS xx CHAPTER 3: UNDERSTANDIN
Page 24 and 25: CONTENTS xxii Lock Modes 167 Compat
Page 26 and 27: CONTENTS xxiv Tools and Utilities 2
Page 28 and 29: CONTENTS xxvi Counting the Number o
Page 30 and 31: CONTENTS xxviii Gathering Sizing Da
Page 32 and 33: INTRODUCTION WHAT THIS BOOK COVERS
Page 34 and 35: INTRODUCTION Chapter 2: Demystifyin
Page 36 and 37: INTRODUCTION Chapter 9: Troubleshoo
Page 38 and 39: INTRODUCTION xxxvi successful virtu
Page 40 and 41: INTRODUCTION xxxviii you topics of
Page 43 and 44: 1SQL Server Architecture WHAT’S I
Page 45 and 46: Isolation The Life Cycle of a Query
Page 47 and 48: A Basic SELECT Query The Life Cycle
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The Life Cycle of a Query ❘ 19 A
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Recovery Interval The Life Cycle of
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SQL Server’s Execution Model and
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SQL Server’s Execution Model and
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Summary ❘ 27 ➤ Checkpoints occu
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30 ❘ CHAPTER 2 DEMYSTIFYING HARDW
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110 ❘ CHAPTER 4 STORAGE SYSTEMS S
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112 ❘ CHAPTER 5 QUERY PROCESSING
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6Locking and Concurrency WHAT’S I
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Database Transactions ❘ 151 succe
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The Dangers of Concurrency ❘ 153
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Now run Session 1; and then as soon
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READ COMMITTED; --REPEATABLE READ;
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FROM Person.Person ORDER BY LastNam
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Double Reads The Dangers of Concurr
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LOCKS Locks ❘ 163 You’ve just r
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COLUMN NAME DESCRIPTION TRANSACTION
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Locks ❘ 167 You may look at this
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WHERE ProductID =1; --ROLLBACK TRAN
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FIGURE 6-13 Locks ❘ 171 The trans
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Compatibility Matrix Locks ❘ 173
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Isolation Levels ❘ 175 Lock escal
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FIGURE 6-18 Repeatable Read Isolati
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Summary ❘ 179 the same drawbacks
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182 ❘ CHAPTER 7 LATCHES AND SPINL
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8Knowing Tempdb WHAT’S IN THIS CH
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Overview and Usage ❘ 213 ➤ Temp
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You can do the same test but with a
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Overview and Usage ❘ 217 Whether
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Overview and Usage ❘ 219 Along th
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Allocation Pages Troubleshooting Co
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SET nocount ON ; DECLARE @i INT = 0
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Troubleshooting Common Issues ❘ 2
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Confi guration Best Practices ❘ 2
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Confi guration Best Practices ❘ 2
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Summary ❘ 237 Once IFI is working
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PART II Troubleshooting Tools and L
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242 ❘ CHAPTER 9 TROUBLESHOOTING M
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10 Viewing Server Performance with
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Performance Monitor Overview ❘ 26
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Show/Hide Counters Performance Moni
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COUNTER DESCRIPTION Database Replic
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COUNTER DESCRIPTION Memory Broker C
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Working with Data Collector Sets Pe
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Using PerfMon on 64-bit Systems Usi
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Types of Bottlenecks Getting More f
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Common Causes of CPU Problems This
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Disk or Storage-Related Problems Ge
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➤ Page latch waits ➤ Waits for
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FIGURE 10-9 Performance Analysis of
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OTHER PERFMON LOG ANALYSIS TOOLS Ot
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Extracting Performance Data for a S
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Using LogParser Summary ❘ 293 Log
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296 ❘ CHAPTER 11 CONSOLIDATING DA
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12 Bringing It All Together with SQ
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Getting Familiar with SQL Nexus ❘
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FIGURE 12-11 Getting Familiar with
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➤ Importing SQL Trace fi les usin
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page. Figure 12-19 shows the Manage
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Customizing SQL Nexus ❘ 345 NOTE
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Resolving Common Issues ❘ 347 pre
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13 Diagnosing SQL Server 2012 Using
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WHY YOU SHOULD BE USING EXTENDED EV
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What Are Extended Events? ❘ 353 e
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What Are Extended Events? ❘ 355 S
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What Are Extended Events? ❘ 357 Y
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Targets What Are Extended Events?
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What Are Extended Events? ❘ 361 T
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Creating Extended Events Sessions i
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Once events have been added, as sho
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FIGURE 13-12 Once the session has b
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insert t1 (val1, val2) values ('X',
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Viewing Data Captured by Extended E
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This will reconfi gure the live dat
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FIGURE 13-27 FIGURE 13-28 Viewing D
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Summary ❘ 377 For newcomers to th
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380 ❘ CHAPTER 14 ENHANCING YOUR T
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406 ❘ CHAPTER 15 DELIVERING A SQL
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16 Delivering Manageability and Per
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POLICY-BASED MANAGEMENT Policy-Base
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FIGURE 16-1 6. Right-click on Polic
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3. Type the name of the instance th
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Policy-Based Management ❘ 453 aut
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TABLE 16-5: Example File Autogrow P
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FIGURE 16-7 Policy-Based Management
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Policy-Based Management ❘ 459 Onc
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Other Microsoft Tools for Managing
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You also worked through detailed ex
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470 ❘ CHAPTER 17 RUNNING SQL SERV
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INDEX Numbers 32-bit operating syst
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loat, 67, 74 block-based storage sy
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Memory Broker Clerks, 267 Memory No
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of SCOM, 464-465 of virtual databas
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Fibre Channel Internet Protocol (FC
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I IA-64, 57 IAM (Index Allocation M
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monitoring, 163-165 NOLOCK hint for
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multi-layer (MLC) fl ash memory, 10
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performance baselines for, 285 bott
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data analysis in, 255 feature-speci
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Reliability and Performance Monitor
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SGAM (Shared Global Allocation Map)
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in tempdb, 214-215 wait, 284-285 st
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triggers, 217-218 trivial plans, 10
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VLF (Virtual Log File) count, 428-4
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