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If a query is performing poorly, and you can't understand why, then that query's execution plan will tell you not only what data set is coming back, but also what SQL Server did, and in what order, to get that data. It will reveal how the data was retrieved, and from which tables and indexes, what types of joins were used, at what point filtering, sorting and aggregation occurred, and a whole lot more. These details will often highlight the likely source of any problem. I wrote this book with the singular goal of teaching you how to read SQL Server Execution plans It will explain, among many other things, the following: How to capture execution plans using manual and automatic methodsA documented method for reading and interpreting execution plansHow common SQL Server objects, such as indexes, views, stored procedures, and so on, appear in execution plansHow to control execution plans with hints and plan guides, and why this is a double-edged swordHow the Query Store works with, and collects data on, execution plans With this knowledge, you'll have everything you need to read the execution plan, for any query of your own, regardless of complexity, and understand what it does and what is causing the bad performance. It is still your job to work out how best to fix it, but your new understanding of execution plans will give a much better chance of success!

In this book, Kalen Delaney explains how the new In-Memory OLTP engine works, how it stores and manipulates data, and how, even with all data stored in memory and no locking or latching, it can still guarantee the ACID properties of all transactions.

Few software developers would build an application without using source control, but its adoption for databases has been slower. Yet without source control to maintain the scripts necessary to create our database objects, load lookup data, and take other actions, we cannot guarantee a reliable and repeatable database deployment process, let alone coordinate database upgrades with changes to the application. We also run the risk that our "ad hoc" database patching will cause inconsistencies and data loss. Source control can and should play a key role in the database development and deployment process, and this book will show you exactly how to get started. It provides 'just enough' detail about the core components of a source control system and how to incorporate that system into the database development and deployment processes, covering: - Database Source Control architecture - what to include, how to structure the components - Collaborative editing - teamwork on a database project, while minimizing change conflicts and data loss. - Change auditing - what changed between versions and who changed it? - Branching -work independently on separate features and control what to deploy and when - Merging - what happens if one user changes a column name while another updates its data type? A merge operation lets the team decide the correct outcome - Building and Deploying databases - building new databases and upgrading existing ones from source control Every chapter follows the same "half-theory, half practice" template, so you learn the concepts then see how they work.

The SQL Server 2014 In-Memory OLTP engine (a.k.a. Hekaton) is designed from the ground up to exploit terabytes of available memory and high numbers of processing cores. It allows us to work with memory-optimized tables and indexes, and natively compiled stored procedures, in addition to the disk-based tables and indexes, and T-SQL stored procedures, that SQL Server has always provided. Hekaton in-memory data is accessible, transparently, using familiar interfaces such as T-SQL and SSMS, but Hekaton's internal behavior and capabilities are very different than those of the standard relational engine. Everything you knew about how your SQL Server stores and accesses data is different in Hekaton. Everything you understood about how multiple concurrent processes are handled needs to be reconsidered. In this book, Kalen Delaney explains how the new In-Memory OLTP engine works, how it stores and manipulates data, and how, even with all data stored in memory and no locking or latching, it can still guarantee the ACID properties of all transactions. Kalen has been working with SQL Server since 1987, specializing in query performance tuning and SQL Server internals. The Hekaton internals knowledge she provides in this book will help you migrate existing tables or databases to Hekaton, and get faster performance from your SQL Server applications than you ever thought possible.

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. 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 to: * 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 in order to use them; it's all done in a language all DBAs know and mostly love: T-SQL.

Relational databases place heavy demands on their underlying hardware and many of these databases are mission-critical resources for multiple applications, where performance bottlenecks are immediately noticeable and often very costly to the business. Despite this, many database administrators are not very knowledgeable about server hardware. Many medium-to-large companies have completely separate departments that are responsible for hardware selection, configuration, and maintenance, and the DBA with no knowledge of hardware is often completely at their mercy. Likewise, many DBAs are also unaware of the performance implications of the various options and configurations for SQL Server, and the Operating System on which it is installed. Glenn Berry is a highly experienced Database Architect, teacher and SQL Server MVP, and his book is designed to provide the fundamental knowledge and resources you need to make intelligent choices about optimal installation and configuration of SQL Server hardware, operating system and the SQL Server RDBMS. With what you learn in this book, you'll be able to ensure that your SQL Server instances can handle gracefully the CPU, memory and IO workload generated by your applications, and that the operating system and SQL Server itself are installed, patched, and configured for maximum performance and reliability.

In his new book, Brad's Sure Guide to SQL Server Maintenance Plans, Brad McGehee takes you on a comprehensive tour of two SQL Server tools designed to help DBAs ensure that a "required minimum" level of maintenance takes place on their SQL Server instances: the Maintenance Plan Wizard and the Maintenance Plan Designer. Table of Contents * Chapter 01: Why is Database Maintenance Important? Chapter 02: Before you Create any Maintenance Plans Chapter 03: Getting Started with the Maintenance Plan Wizard Chapter 04: Task Scheduling Chapter 05: Check database Integrity Task Chapter 06: Shrink Database Task Chapter 07: Rebuild Index Task Chapter 08: Reorganize Index Task Chapter 09: Update Statistics Task Chapter 10: Execute SQL Server Agent Job Task Chapter 11: History Cleanup Task Chapter 12: Define Back Up Database (Full) Task Chapter 13: Define Back Up Database (Differential) Task Chapter 14: Back Up Database (Transaction Log) Task Chapter 15: Maintenance Cleanup Task Chapter 16: Using the Maintenance Plan Designer Why read this book? Millions of SQL Server instances run in the offices of small and medium-sized organizations and there are many "accidental" DBAs out there whose job it is to maintain them. Often, they find that they don't have the knowledge, experience, or critically the time, to perform the correct level of maintenance on their SQL Server databases, much as they might like to. This can mean poor performance and reduced availability. Regardless of the size of your organization, if your mission critical data becomes unavailable, then business will suffer greatly. The Maintenance Plan Wizard and Designer allow you to configure and schedule eleven core database maintenance tasks, ranging from integrity checks, to database backups, to index reorganizations and rebuilds. Brad walks through every one of these tasks covering: * The intent of each task and why it's important * How to configure each task and what all the options mean * Scheduling considerations: when and how often should you run the task? * Customizing and extended your Maintenance Plans using the Designer Used carefully, these Maintenance Plan tools represent powerful time-saving devices for any DBA. At each stage of the book, Brad explains clearly the correct and incorrect uses for the tool, and indicates where more advanced solutions, using T-SQL or PowerShell scripting, would be more appropriate.

Editorial Review As the backbone to so many commercial communications infrastructures, Microsoft's Exchange Server technology has become a critical component in many an IT department. With the latest incarnation of Exchange Server on the horizon, and indeed almost upon us, it is becoming increasingly urgent that SysAdmins get to grips with this latest-and-greatest technology. What's new? What's gone? What's easier or harder? Jaap touches upon all these essentials. As a practical field-guide to Exchange Server 2010, this book will tell you exactly what you need to know to get started with upgrading, installing, configuring and managing your new Exchange Server. If you need to get to grips with Exchange Server 2010 fast, or want a short, to-the-point, practical guide to Microsoft's latest offering, then you should read this book. Table of Contents * Chapter 01: Introduction to Exchange Server 2010 * Chapter 02: Installing Exchange Server 2010 * Chapter 03: Exchange Server 2010 Coexistence * Chapter 04: Managing Exchange Server 2010 * Chapter 05: High Availability in Exchange Server 2010 About the Author Jaap Wesselius is a senior Exchange consultant for DM Consultants (http: //www.dm-consultants.nl/), a Microsoft Gold Partner with a strong focus on messaging and collaboration solutions. Prior to working for DM Consultants Jaap worked for 8 years for Microsoft Services in The Netherlands, specializing in Exchange Server. Jaap is a BSc, MCSE, MCITP, and MCT and was awarded the Microsoft MVP Award (Exchange Server) for his contributions to the Dutch messaging and collaboration community. Besides Exchange Server, Jaap is also very active in virtualization and is a founder of the Dutch Hyper-V community. You can reach Jaap at J.Wesselius@dm-consultants.nl or Jaap@hyper-v.nu

In the Complete Guide .NET Performance and Optimization, Paul Glavich and Chris Farrell offer a comprehensive and essential handbook to anybody looking to set up a .NET testing environment and get the best results out of it, or just learn effective techniques for testing and optimizing their .NET applications.