Monitoring Performance
Vicktor has a bunch of scripts he uses to monitor performance, he explains why he built them and how to use them. Good coverage of the different reasons for slow performance.
2003-06-09
16,455 reads
Performance Tuning
COM+, SQL Server, Serializable isolation level and the issues!
This article shows you how to identify SQL Server performance problems and explains how the SERIALIZABLE transaction isolation level effected the performance of an OLTP application.
2003-05-22
1,874 reads
Troubleshooting SQL Server with the Sysperfinfo Table
Joe discusses why he prefers command line tools over GUI, then launches into a how-to about querying sysperfinfo to resolve performance issues. Couple nice sample queries included!
2006-04-21 (first published: 2003-05-14)
32,883 reads
Dynamic SQL or Stored Procedure
We've had a lot of coverage of dynamic sql (including another great one from Robert Marda later this week) but this one is a little different. Done in a question/answer format, Andy tries to explain to junior developers why dynamic sql is to be avoided, how to do so, what to do when you can't.
2005-08-26 (first published: 2003-04-23)
48,526 reads
Transaction Processing Performance Council
We've all seen the numbers published about how well very db vendors do on the TPC tests - have you ever visited the site that sponsors the tests? Or looked to see what hardware and software configuration was used to achieve the score? Lots of good information on this site!
2003-04-10
825 reads
Cluster That Index!
Quite a while back Andy wrote an article about why not using primary keys and clustered indexes was a worst practice. Chris weighs in this week with a great article that gives some more in depth info on clustered indexes and why he thinks they should be used on every table.
2003-03-30
18,854 reads
Analyzing and Optimizing T-SQL Query Performance on SQL Server
This white paper discusses the basics of indexes, such as density and selectivity, effects of many versus few indexes, long versus short keys, covering indexes, and how the SQL Server optimizer chooses indexes
2003-03-14
2,229 reads
Analyzing and Optimizing T-SQL Query Performance Part 1
In this series by Quest Software's Kevin Kline, he shows you some tips to performance tuning T-SQL. This was contributed by Quest from their recent webcast. This white paper discusses various T-SQL discovery, optimization and tuning techniques using the SET and DBCC commands.
2003-03-06
2,673 reads
Saving Space To Increase Performance
Disk space is getting cheaper everyday. Why should you worry about the amount of space your data is consuming? This article by Neil Boyle presents some great reasons why you should be concerned.
2003-02-21
10,105 reads
What is the search order for Procedures prefixed sp_?
In this article, James Travis covers a common performance topic of prefixing stored procedures sp_. Does it really slow down performance?
2002-11-14
7,135 reads
Blogs
Why sys.fn_dblog Is Undocumented And Why It's Still There
By SQLPals
Why sys.fn_dblog Is Undocumented And Why It's Still There Why sys.fn_dblog...
T-SQL Tuesday #202 SQL Server Outage You’ll Never Forget: A Roundup
When I put together the invitation for T-SQL Tuesday #202, I wasn't sure what...
A Last Minute Trip to the EU
By Steve Jones
My life has some crazy travel stretches for sure. Between speaking, office visits, customer...
Forums
Implementing Type 4 Slowly Changing Dimensions in SQL Server
Comments posted to this topic are about the item Implementing Type 4 Slowly Changing...
The Disabled Index
Comments posted to this topic are about the item The Disabled Index
Server-Level Table sizes
Comments posted to this topic are about the item Server-Level Table sizes
Question of the Day
The Disabled Index
I run this code on SQL Server 2022.
CREATE TABLE Drink
(
drinkid INT NOT NULL
CONSTRAINT DrinkPK PRIMARY KEY CLUSTERED,
drinkname VARCHAR(20),
rating NUMERIC(2, 1)
)
GO
INSERT INTO Drink
(
drinkid,
drinkname,
rating
)
VALUES
(1, 'Margarita', 4.5),
(2, 'Mojito', 4.3),
(3, 'Old Fashioned', 4.7),
(4, 'Martini', 4.4),
(5, 'Cosmopolitan', 4.2)
GO
ALTER INDEX drinkpk ON dbo.drink DISABLE
GO
SELECT * FROM dbo.Drink
GO
What is the result? See possible answers