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Klaus Aschenbrenner

Klaus Aschenbrenner provides independent SQL Server Consulting Services across Europe and the US. Klaus works with the .NET Framework and especially with the SQL Server 2005/2008 from the very beginnings. In the years 2004 - 2005 Klaus was entitled with the MVP award from Microsoft for his tremendous support in the .NET Community. Klaus has also written the book Pro SQL Server 2008 Service Broker which was published by Apress in the Summer of 2008. Further information about Klaus you can find on his homepage at http://www.SQLpassion.at. He also twitters at http://twitter.com/Aschenbrenner.

A ever-increasing Clustered Key value doesn’t scale!

(Be sure to checkout the FREE SQLpassion Performance Tuning Training Plan, where you are getting week by week via email all the essential knowledge you need to know about performance tuning on SQL Server.)

You know all the best practices how to choose a Clustered Key value? A good… Read more

13 comments, 68 reads

Posted in Klaus Aschenbrenner on 15 April 2014

Improving Query Performance by using correct Search Arguments

(Be sure to checkout the FREE SQLpassion Performance Tuning Training Plan, where you are getting week by week via email all the essential knowledge you need to know about performance tuning on SQL Server.)

In today’s blog posting I want to talk about a very specific performance problem related… Read more

0 comments, 127 reads

Posted in Klaus Aschenbrenner on 8 April 2014

Goodbye SQL Server, Hello FileMaker…

The last weeks were very time consuming for me, because I had to make a very tough decision: staying independent and providing high quality SQL Server consulting and training services, or getting employed (again), and being part of a greater team to influence how the IT industry will be in… Read more

0 comments, 120 reads

Posted in Klaus Aschenbrenner on 1 April 2014

SQL Server Quickie #12 – Nested Loop Operator

(Be sure to checkout the FREE SQLpassion Performance Tuning Training Plan, where you are getting week by week via email all the essential knowledge you need to know about performance tuning on SQL Server.)

Today I have uploaded the 12th SQL Server Quickie to YouTube. This time I’m talking… Read more

0 comments, 101 reads

Posted in Klaus Aschenbrenner on 31 March 2014

The Illusion of Updateable Clustered ColumnStore Indexes

(Be sure to checkout the FREE SQLpassion Performance Tuning Training Plan, where you are getting week by week via email all the essential knowledge you need to know about performance tuning on SQL Server.)

In todays blog posting I want to concentrate in more details on the Updateable Clustered… Read more

1 comments, 886 reads

Posted in Klaus Aschenbrenner on 25 March 2014

Performance improvements in SQL Server 2014

(Be sure to checkout the FREE SQLpassion Performance Tuning Training Plan, where you are getting week by week via email all the essential knowledge you need to know about performance tuning on SQL Server.)

SQL Server 2014 will be an amazing release regarding all the various performance enhancements that… Read more

2 comments, 137 reads

Posted in Klaus Aschenbrenner on 18 March 2014

Buffer Pool Extensions in SQL Server 2014

(Be sure to checkout the FREE SQLpassion Performance Tuning Training Plan, where you are getting week by week via email all the essential knowledge you need to know about performance tuning on SQL Server.)

In todays blog posting I want to talk about Buffer Pool Extensions that are introduced… Read more

0 comments, 258 reads

Posted in Klaus Aschenbrenner on 11 March 2014

SQL Server Quickie #11 – Non Clustered Indexes

(Be sure to checkout the FREE SQLpassion Performance Tuning Training Plan, where you are getting week by week via email all the essential knowledge you need to know about performance tuning on SQL Server.)

Today I have uploaded the 11th SQL Server Quickie to YouTube. This time I’m talking… Read more

0 comments, 49 reads

Posted in Klaus Aschenbrenner on 3 March 2014

Lock Escalations

(Be sure to checkout the FREE SQLpassion Performance Tuning Training Plan, where you are getting week by week via email all the essential knowledge you need to know about performance tuning on SQL Server.)

In todays blog posting I want to talk about Lock Escalations in SQL Server. Lock… Read more

0 comments, 1,515 reads

Posted in Klaus Aschenbrenner on 25 February 2014

Improving SQL Server Performance by using Instant File Initialization

(Be sure to checkout the FREE SQLpassion Performance Tuning Training Plan, where you are getting week by week via email all the essential knowledge you need to know about performance tuning on SQL Server.)

Today I want to talk about a very specific topic in SQL Server – Instant… Read more

0 comments, 1,840 reads

Posted in Klaus Aschenbrenner on 18 February 2014

DELETE operations on tables

(Be sure to checkout the FREE SQLpassion Performance Tuning Training Plan, where you are getting week by week via email all the essential knowledge you need to know about performance tuning on SQL Server.)

In todays blog posting I want to show you quickly about what happens in SQL… Read more

0 comments, 164 reads

Posted in Klaus Aschenbrenner on 11 February 2014

Announcing the SQLpassion Performance Tuning Training Plan

You are a developer and/or DBA and want to learn in a very compact way the essential things about performance tuning & troubleshooting SQL Server installations? In our new free 6 month long SQLpassion Performance Tuning Training Plan we give you week by week via email all the essential knowledge… Read more

0 comments, 209 reads

Posted in Klaus Aschenbrenner on 3 February 2014

SQL Server Quickie #10 – Forwarding Records

(Be sure to checkout the FREE SQLpassion Performance Tuning Training Plan, where you are getting week by week via email all the essential knowledge you need to know about performance tuning on SQL Server.)

Today I have uploaded the 10th SQL Server Quickie to YouTube. This time I’m talking… Read more

0 comments, 200 reads

Posted in Klaus Aschenbrenner on 29 January 2014

Inside the Statistics Histogram & Density Vector

(Be sure to checkout the FREE SQLpassion Performance Tuning Training Plan, where you are getting week by week via email all the essential knowledge you need to know about performance tuning on SQL Server.)

You know the problem: the “Estimated Number of Rows” in an operator in the Execution… Read more

0 comments, 1,095 reads

Posted in Klaus Aschenbrenner on 28 January 2014

Myths and Misconceptions about Transaction Isolation Levels

(Be sure to checkout the FREE SQLpassion Performance Tuning Training Plan, where you are getting week by week via email all the essential knowledge you need to know about performance tuning on SQL Server.)

In todays blog posting I want to talk about myths & misconceptions about the various… Read more

0 comments, 1,923 reads

Posted in Klaus Aschenbrenner on 21 January 2014

How to throttle your Storage with Resource Governor in SQL Server 2014

(Be sure to checkout the FREE SQLpassion Performance Tuning Training Plan, where you are getting week by week via email all the essential knowledge you need to know about performance tuning on SQL Server.)

In todays blog posting I want to talk about a very cool enhancement in SQL… Read more

0 comments, 221 reads

Posted in Klaus Aschenbrenner on 14 January 2014

Why Transaction Log Auto Growths are degrading your performance

(Be sure to checkout the FREE SQLpassion Performance Tuning Training Plan, where you are getting week by week via email all the essential knowledge you need to know about performance tuning on SQL Server.)

In this blog posting I want to talk a little bit in more detail why… Read more

0 comments, 878 reads

Posted in Klaus Aschenbrenner on 7 January 2014

SQL Server Quickie #9 – Clustered Indexes

(Be sure to checkout the FREE SQLpassion Performance Tuning Training Plan, where you are getting week by week via email all the essential knowledge you need to know about performance tuning on SQL Server.)

Today I have uploaded the 9th SQL Server Quickie to YouTube. This time I’m talking… Read more

0 comments, 206 reads

Posted in Klaus Aschenbrenner on 6 January 2014

How SQL Server 2014 improves Online Operations that aren’t Online Operations

(Be sure to checkout the FREE SQLpassion Performance Tuning Training Plan, where you are getting week by week via email all the essential knowledge you need to know about performance tuning on SQL Server.)

In todays blog posting I want to talk a little bit about Online Index Rebuild… Read more

0 comments, 302 reads

Posted in Klaus Aschenbrenner on 2 January 2014

SQL Server Quickie #8 – Hash Indexes

(Be sure to checkout the FREE SQLpassion Performance Tuning Training Plan, where you are getting week by week via email all the essential knowledge you need to know about performance tuning on SQL Server.)

Today I have uploaded the 8th SQL Server Quickie to YouTube. This time I’m talking… Read more

0 comments, 231 reads

Posted in Klaus Aschenbrenner on 5 December 2013

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