SQL Server Performance Tuning

Some Useful Undocumented SQL Server 7.0 Trace Flags

In this article, I want to tell you what should you know about some undocumented SQL Server 7.0 trace flags, and how you can use them for administration and monitoring.Trace flags are used to temporarily set specific server characteristics, or to switch on or off a particular behavior. You can set trace flags by using […]

Are SQL Server Temp Tables Really Necessary?

You will find articles on this website, as well as others, advising you to avoid the use of temporary tables to maximize the performance of your queries. I agree with the articles, but would like to add that sometimes you cannot avoid the use of a temporary table. For those of you who have not […]

An Exclusive Interview with Edward Whalen Co-Author of Microsoft SQL Server 2000 Performance Tuning

Read the SQL-Server-Performance.Com Book Review Edward Whalen is the co-author on four SQL Server books from Microsoft Press: SQL Server 7 Administrator’s Companion, SQL Server 7 Performance Tuning Technical Reference, SQL Server 2000 Administrator’s Companion, and SQL Server 2000 Performance Tuning Technical Reference. He has also authored four Oracle books. Edward Whalen is also vice […]

SQL Server 2000 I/O Configuration in a SAN/NAS Environment

Some of the most common SQL Server performance problems involve the I/O subsystem. Since SQL Server’s main function is to manipulate data, and that data resides either in memory or on the I/O subsystem, any I/O performance problems will result in SQL Server performance problems. Much of the design of the SQL Server RDBMS is […]

An Exclusive Interview with Author Fernando Guerrero On How to Get the Most of ADO.NET and SQL Server

Read the SQL-Server-Performance.Com Book Review Fernando Guerrero, SQL Server MVP (Most Valuable Professional), is the author of the Que book, Microsoft SQL Server 2000 Programming, and is currently writing a book on ADO.NET and SQL Server for Apress. He is the Principal Technologist and SQL Server Product Consultant for QA, which is the leading IT […]

Optimizing SQL Server Stored Procedures to Avoid Recompiles

One of the most overlooked areas in optimizing SQL Server and Transact-SQL is the recompilations of stored procedures. I recently started looking at this issue where I worked, and I noticed that there is an issue with SQL developers not taking recompiles into account when they create new code. Because of this, Transact-SQL performance is […]

Data Page Structures in SQL Server 6.5

In this article, I want to tell you about data page structure in MS SQL Server 6.5, which are substantially different that what you currently find in SQL Server 7.0 and SQL Server 2000.There are five kinds of pages in MS SQL 6.5: Data pages Index pages Allocation pages Text/Image pages Distribution pages The size […]

SQL Server Replication from 6.5 to 2000

These are the steps needed to successfully establish transactional replication from SQL Server 6.5 to 2000. They has been tested and are known to successfully work. This article assumes you have some previous experience with SQL Server replication. Prepare publishing server/database Set subscribing servers Update sp_articleview in master (6.5) Publish tables Configure security on 2000 […]

SQL Server Join Nastiness Tamed: Finding Joy In The INNER LOOP

Microsoft SQL Server sometimes uses hash and merge joins when querying large tables when uncomplicated nested loop joins would result in better performance and less server impact. In many such cases, query times go from many milliseconds to many seconds because hash table joins require that large amounts of data be processed and temporarily stored, […]

How Updates are Performed in SQL Server 6.5

SQL Server 6.5 can use two different methods to update records, depending on the circumstances. They include: Direct Update Deferred Update Each method affects performance in a different way, as we shall see in this article.A Direct Update includes three different methods of modification: In-place update On-page delete/insert Full delete/insert Think of these above three […]
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