In the days when I contentedly cut procedural code, I was puzzled by the visceral rages of the database specialists; they were like the ship’s cook occasionally going berserk with a meat-cleaver. After I switched to database work, I realized why.”
2006-01-02
3,504 reads
2005-12-30
2,121 reads
Continuing with his series on working with SQL Server, Andy Warren looks at how long it can take to start or restart the services and why.
2005-12-29
9,483 reads
This process uses ITWIZ.EXE the command line version of the Index Tuning Wizard. SQL trace file information is stored in a table on production then transferred to a non-production server. ITWIZ is then run against the transferred trace data resulting in a UNICODE SQL script. This script has index creation and deletion information as well as script parameters in a remarks section.
2005-12-29
1,973 reads
When programming in T-SQL, the impact of NULL values can be severe in many cases, especially aggregates. New Author Peter Ward brings us a great explanation on how NULLs can impact things like SUM operations.
2005-12-28
11,048 reads
This article is the third in a series of four where I share my findings on baselining, monitoring, stress testing and performance tuning. It builds on the foundations of my previous articles on baselining and monitoring.
2005-12-28
3,845 reads
The first phase of Project REAL included the migration of existing SQL Server 2000 DTS packages to SQL Server 2005 Integration Services (SSIS) for a large electronic retailer. One source of information for the data warehouse was from TLog files, which contained data from point-of-sale cash registers in stores. TLog files store data in packed decimal format. To extract and transform this data into a format suitable for loading into the relational data warehouse tables, it was necessary to unpack and parse the files. To achieve this, custom pipeline components were implemented to read and transform the data by extending the SSIS object model. This paper discusses what we learned while implementing the pipeline components for extracting and parsing data from the TLog parser
2005-12-27
2,067 reads
Analyzing and detecting performance problems is a big part of a DBA's job and also one of the more difficult ones to learn. New author Terry Troisi brings us a few things that you can use the next time your server spikes to 100% CPU.
2005-12-26
17,430 reads
It has been widely publicized that Analysis Services 2005 uses XML for Analysis 1.1 (XMLA) as its only network protocol for communication between client and server. XMLA is standard public protocol defined by XMLA council and full description can be found at www.xmla.org
2005-12-26
1,771 reads
One thing that often amazes me is that many SQL Server developers do not actually measure the performance of their queries. Many of them thought that you needed external tools, more or less complicated, to run against your server, and they did not have the time or inclination to learn and try these. This article will describe a couple of much easier methods of measuring performance of queries.
2005-12-23 (first published: 2004-04-02)
37,769 reads
By Vinay Thakur
I wrote about TempDB Internals and understand that Tempdb plays very important role on...
By Vinay Thakur
continuing from Day 1 where we covered the history of AI and GPT family,...
Comments posted to this topic are about the item A Quick Restore
Comments posted to this topic are about the item Guarding Against SQL Injection at...
I have a quick question on Ola Hallengren Index Optimize Maintenance . Do we...
While doing some testing of an application, I wanted to reset my environment after doing some testing with this code:
USE DNRTest BACKUP DATABASE DNRTest TO DISK = 'dnrtest.bak' GO /* Bunch of stuff tested here */RESTORE DATABASE DNRTest FROM DISK = 'dnrtest.bak' WITH REPLACEWhat happens if this runs, assuming the "bunch of stuff" isn't anything affecting the instance. See possible answers