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{list wl as x}{/list}Performance Tuning with SQL Server Dynamic Management Views
By Tim Ford and Louis Davidson
Performance Tuning with SQL Server Dynamic Management Views
by Tim Ford and Louis Davidson
Editorial Review
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
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. It will highlight the
core techniques and &patterns& that you need to master, and will provide a core
set of scripts that you can use and adapt for your own systems, including how
Root out the queries that are causing memory or CPU pressure on your system
Investigate caching, and query plan reuse
Identify index usage patterns
Track fragmentation in clustered indexes and heaps
Get full details on blocking and blocked transactions, including the exact
commands being executed, and by whom.
Find out where SQL Server is spending time waiting for resources to be
released, before proceeding
Monitor usage and growth of tempdb
The DMVs don't make existing, built-in, performance tools obsolete. On the
contrary, they complement these tools, and offer a flexibility, richness and
granularity that are simply not available elsewhere. Furthermore, you don't need
to master a new GUI, or a new language
it's all done in a
language all DBAs know and mostly love: T-SQL.
About the author
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
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.
Book Details
Paperback: 200 pages
Publisher: Redgate Books
Visit the #1 education and community site for the SQL Server Community, for articles, resources, forums, sample scripts and book reviews.
Visit our rapid fire stackoverflow-style Q&A site for all things SQL Server. Ask questions, answer them, vote good answers up and bad ones down, build your reputation in badges.
online technical journal and community hub for SQL Server, .NET and Exchange professionals.
Connect with RedgateToad for SQL Server | SQL Server tuning and admin tool| Dell Software
Toad for SQL ServerToad for SQL Server|Toad for SQL Server - EditorToad is a powerful toolset for creating and debugging your T-SQL. The editor provides outstanding coding possibilities with code snippets, SQL recall, script map and intelligent code completion, while group execute allows you to execute your scripts against multiple servers and instances.Toad for SQL Server - Schema compareSchema compare compares and synchronizes one-to-many schemas, giving you more flexibility in schema comparisons and the ability to complete your tasks in a single effort. Multi-target schema compare can also run as automation activity.Toad for SQL Server - Data compareComparing and synchronizing your data is a straight-forward and easy process with Toad&s data compare tool. Besides great automatic mapping, it features the ability to manually create &object per object& and even &column per column& mapping and specify comparison keys. This flexibility allows you to compare differently organized objects and ensures high-quality, precise results. The comparison results are easy to navigate through, as searching and filtering are available.Toad for SQL Server - Job managerThe job manager provides a simple visual display of jobs on multiple SQL Server instances against a calendar view, making it easy to avoid resource contention caused by job conflicts.Toad for SQL Server - Performance monitorThe performance monitor provides information on the processes running on the SQL Server instance, their performance cost, and visualizes gathered information in the charts.Toad for SQL Server - Index fragmentationIndex fragmentation quickly detects indexes that require defragmentation and reorganizes or rebuilds them.Toad for SQL Server - Data Diff ViewerThe data diff viewer uses data-compare best practices, including &column per column& mapping and the ability to view source and target data grouped by the mapping rule. Data diff viewer also compares temporary data, e.g., two results sets. The text diff viewer provides a convenient way to review differences based on the object definitions.Toad for SQL Server - AutomationProject management is easy with automation. Represent your workflow step by step and save it as an automation script, schedule execution, and focus on other tasks.Toad for SQL Server- Version controlToad&s easy-to-use version control ensures versioning of your objects when sharing database projects across your team. Built-in version control can be configured for subversion and Team Foundation Server, making the latest changes available right from Toad&s context menu.Toad for SQL Server - Log readerThe log reader reconstructs the transaction log, provides the ability to review exact SQL scripts that were executed against the specified database, and lets you roll back potentially harmful ones without having to restore from a backup.Toad for SQL Server - Object explorerBrowsing objects with the object explorer is easy and you can create custom filters, and set tabbed, dropdown or treelist views. Open the object details and navigate through to get quick access to object properties and key attributes, data, dependent and referenced objects, DDL scripts and more.Easily manage more SQL Server databases and automate repetitive tasksCompare and sync server, schema and data to identify differencesExecute scripts and T-SQL snippets against multiple servers and instancesIdentify performance bottlenecks and automate SQL optimizationPerform database workload replay and performance benchmark testingUtilize a common toolset from development through production
OverviewRun faster, more reliable databases by doing more work in less time with Toad& for SQL Server&. This single toolset maximizes productivity through extensive automation, intuitive workflows and built-in expertise. Plus, it complements Microsoft tools by solving key SQL Server challenges, so you can proactively manage large numbers of databases. It also makes it easy to manage change, resolve issues quickly and promote the highest levels of code quality, performance and maintainability.Compare and sync server, schema and data to identify differencesTrack change or easily migrate a database between production, test and development environments by comparing and synchronizing servers, schemas, and data.Execute scripts and T-SQL snippets against multiple servers and instancesSave time by automating the execution of scripts and T-SQL snippets against multiple servers and instances simultaneously.Identify performance bottlenecks and automate SQL optimizationConduct performance tuning with automated SQL scan, optimization, index optimization, no other tool offers the level of performance tuning that is available in Toad& Xpert.Perform database workload replay and performance benchmark testingConduct benchmark testing, scalability testing, as well as database workload replay in a test or development environment to simulate production scenarios and determine system throughput or identify database breaking points.Utilize a common toolset from development through productionUse a single, integrated and comprehensive toolset that includes both development and production functions.FeaturesCompare and synchLets you compare and sync servers, schemas, and data, and enables easy identification of differences.Group executeProcesses scripts and code snippets against multiple servers and instances.Log readerRolls back transactions in the transaction log without the need to restore from a backup.SQL script recallTracks any SQL executed during your Toad session and eliminates the need to retype commonly used SQL and T-SQL statements, saving time.SQL Server job managerProvides a simple visual display of all running jobs on multiple databases against a calendar backdrop, making it easy to avoid resource contention caused by job conflicts.Security managementBuilds and executes security-related scripts against multiple servers to create, manage, and even replicate security for all users.Report generation and documentationLets you create customized reports for administration and development and export those reports in flexible formats including .xls, XML, .doc and .pdf.SQL optimizationEnables performance tuning with automated SQL scan, optimization, no other tool offers the level of performance tuning that is available in Toad Xpert.Object searchAllows you to search for text in database objects, e.g., column names and SQL code, and helps you rapidly locate code to quickly assess the impact of renaming or code changes.Project Lucy integrationProvides free high-quality performance health checks benchmarked against average performance across the community.Project managementLets you save and reuse powerful features for object management, SQL, and T-SQL coding.T-SQL editingMakes SQL coding easy with advanced code complete, code snippets, and SQL this reduces the T-SQL learning curve, introduces consistency, and helps deliver high-quality code.Query builderHelps you acc includes built-in report and pivot functionality, which allows for in-place analysis and single-click export to an Excel instance, so DBAs and analysts can easily export to their favorite tools.Complete suiteProvides a comprehensive, end-to-end toolset, from development through production administration, as well as integration with Spotlight for performance diagnostics.Consistent toolset across database platformsMinimizes the learning curve across multiple platforms with a similar look and feel while providing deep functional expertise for the nuances of each platform.SpecificationsClient requirementsCPU600 MHzMemory512 MBHard disk space104 MBOperating systemWindows Server& 2003Windows& XP (32-Bit or 64-Bit)Windows Vista& (32-Bit or 64-Bit)Windows Server 2008 (32-Bit or 64-Bit)Windows 7 (32-Bit or 64-Bit)Windows 8 (32-Bit or 64-Bit)Windows Server -Bit only).NET Framework4.0Additional requirementsMicrosoft& Internet Explorer& 6.0 or laterDatabase serverLimited support of SQL Server 2000 (Service Pack 3 or later)SQL Server& 2005 (Service Pack 2 or later)SQL Server 2008SQL Server 2008 R2SQL Server 2012 (&including Express& applies to SS )Cloud database servicesSQL Azure&Detailed requirements to see the full list of system requirements.Videos
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