Showing posts with label tuning. Show all posts
Showing posts with label tuning. Show all posts

Professional SQL Server 2008 Internals and Troubleshooting Review

Professional SQL Server 2008 Internals and Troubleshooting
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Professional SQL Server 2008 Internals and Troubleshooting ReviewBrief Review: Having a book on internal and associating that with real life is "almost" an impossible task. The reason for using the word "almost" is because this book has accomplished this very well. This internals book is written by keeping real life scenarios as top focus. The highlight of the book is that it teaches how to use internals to troubleshoot the real life issues of performance, storage, query processing and all the other important aspects of SQL Server - A must-have book for everybody who is a hands-on DBA/Developer.
Detail Review: I planned to finish reading this book within a week. Very soon, I realized that I was going over very interesting subjects of SQL Server very quickly and understanding them very well. In fact, I finished reading this book in less than a week, and I have to accept that it offers an interesting journey for its readers. This book is also quite easy to read. This book has addressed some of the complex subjects in such a simple manner that any SQL user can understand it very easily.
The three very important components for any server are CPU, Memory and IO. This book effectively elucidates these three components. The topics usually begin by covering internals which shift to practical implementations after proper amount of internals. In other way, I can say that this book is NOT a usual boring book, which can put you to sleep. Each chapter keeps you interested till the end of it. CPU and IO, which are very important deciding factors for Query cost, are very well explained in the book. This book explains how any query can be understood in terms of internals. After explaining the query internals in terms of CPU and IO, it also explains how the physical memory affects query execution and what are the techniques to improve performance?
This book gives an in-depth explanation of Wait Types and Extended Events. I must admit that I was quite scared of Wait Types and Extended Events thus far and learned how "friendly" they can be after reading this book. In fact, I can really see that how I can use these concepts in my real life scenarios and help my servers to run better and efficiently. This book also covers some topics which do not have much available help online, i.e. SQLDiag, RML Utilities, etc. One who is new to these subjects can easily learn from the basics and soon can move to an advanced level. Again, as mentioned earlier, this book is written by taking the real world into consideration and all these subjects follow the same goal.
In fact, I liked the entire book. However, the chapters which I really enjoyed the most are Chapter 3: SQL Server Waits and Extended Events by Jonathan Kehayias; Chapter 4: Working with Storage by Brent Ozar; and Chapter 5: CPU and Query Processing by Steven Wort. Each chapter is independent of the other chapters; this way, the reader can practically start reading any chapter from anywhere and explore the book according to his/her convenience.
Databases are required because there is a large amount of data available, and keeping the data safe, secure and available is the MOST important task of any database system. The fourth chapter on Storage by Brent covers this important basic concept very thoroughly. The most impressive part of Chapter 4 is that it explains how storage works in real time. While taking about storage, Brent manages to effectively explain the concepts of High Availability and Disaster Recovery as well. Maintenance of storage has always been a challenge, and also there has been a lack of understanding on storage devices and techniques available. This chapter answers few very basic but important questions like when should SAN be used for data storage, and what is its effect on performance? This chapter also explains RAID setup; however, please note that it focuses on "practical internals." After setting up good storage, it is equally important to test it; this chapter continues discussing different tools and methodologies for testing storage. This chapter also covers Windows Server Configuration as well as tuning of software by means of storage devices. Corruption can be significant problem in case of a large database; this chapter also covers the proper usage of DBCC CHECKDB and its best practices.
There is no doubt that this book is written by experts who have extensive experience in the subject, which is covered in different chapters. Solid and thorough content, plenty of code, easy-to-understand diagrams, lots of tips along with each topic and simple language are the key highlights of this book.
Rating: 5 Stars
Summary: There is no doubt that this book is by far one of the best books available for anybody who is interested in SQL Server Internals and applying its knowledge to real world troubleshooting scenarios. I think this is one of the must-have books for understanding SQL Server, and believe me, you will find yourself flipping the pages of the book when you are facing a trouble with the SQL Server instead of using search engine!Professional SQL Server 2008 Internals and Troubleshooting OverviewA hands-on resource for SQL Server 2008 troubleshooting methods and tools
SQL Server administrators need to ensure that SQL Server remains running 24/7. Authored by leading SQL Server experts and MVPs, this book provides in-depth coverage of best practices based on a deep understanding of the internals of both SQL Server and the Windows operating system.
You'll get a thorough look at the SQL Server database architecture and internals as well as Windows OS internals so that you can approach troubleshooting with a solid grasp of the total processing environment. Armed with this comprehensive understanding, readers will then learn how to use a suite of tools for troubleshooting performance problems whether they originate on the database server or operating system side.
Topics Covered:
SQL Server Architecture
Understanding Memory
SQL Server Waits and Extended Events
Working with Storage
CPU and Query Processing
Locking and Latches
Knowing Tempdb
Defining Your Approach To Troubleshooting
Viewing Server Performance with PerfMon and the PAL Tool
Tracing SQL Server with SQL Trace and Profiler
Consolidating Data Collection with SQLDiag and the PerfStats Script
Introducing RML Utilities for Stress Testing and Trace File Analysis
Bringing It All Together with SQL Nexus
Using Management Studio Reports and the Performance Dashboard
Using SQL Server Management Data Warehouse
Shortcuts to Efficient Data Collection and Quick Analysis

Note: CD-ROM/DVD and other supplementary materials are not included as part of eBook file.

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PostgreSQL 9.0 High Performance Review

PostgreSQL 9.0 High Performance
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PostgreSQL 9.0 High Performance ReviewI wish I could send this back in time to myself three years ago when I was first digging into Postgres, as this book contains all the hard earned nuggets I've found through scouring online discussions and email lists, plus a lot more I didn't know, and all in a very clear and readable format. It focuses a lot on explaining how Postgres works under the hood so instead of just following rules of thumb for selecting hardware or choosing configuration options, you can really understand what Postgres is doing and *why* these things affect it's performance. Highly recommended to anyone responsible for setting up and maintaining a Postgres db, developing an application that uses Postgres, or who just wants to better understand how Postgres works.PostgreSQL 9.0 High Performance OverviewAccelerate your PostgreSQL system
Learn the right techniques to obtain optimal PostgreSQL database performance, from initial design to routine maintenance.
Discover the techniques used to scale successful database installations.
Avoid the common pitfalls that can slow your system down.
Filled with advice about what you should be doing; how to build experimental databases to explore performance topics, and then move what you've learned into a production database environment.
Covers versions 8.1 through 9.0.
In DetailPostgreSQL database servers have a common set of problems they encounter as their usage gets heavier and requirements more demanding. You could spend years discovering solutions to them all, step by step as you encounter them. Or you can just look in here. All successful database applications are destined to eventually run into issues scaling up their performance. Peek into the future of your PostgreSQL database's problems today. Know the warning signs to look for, and how to avoid the most common issues before they even happen. Surprisingly, most PostgreSQL database applications evolve in the same way: Choose the right hardware. Tune the operating system and server memory use. Optimize queries against the database, with the right indexes. Monitor every layer, from hardware to queries, using some tools that are inside PostgreSQL and others that are external. Using monitoring insight, continuously rework the design and configuration. On reaching the limits of a single server, break things up; connection pooling, caching, partitioning, and replication can all help handle increasing database workloads.The path to a high performance database system isn't always easy. But it doesn't have to be mysterious with the right guide. ApproachA clear, step-by-step guide to optimizing and scaling up PostgreSQL database servers. Improving database performance requires an equal mix ofunderstanding theoretical concepts and working through hands-onexamples. You'll find both here. Many of the examples given will beimmediately useful for monitoring and improving your PostgreSQLdeployments, providing insight into hard-to-obtain information aboutyour database.

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