I'm Klaus Aschenbrenner

I help people to bring their sql server installations to a new level of excellence.

“Klaus resolved our performance problems quickly and easily and gave us perfect guidance to avoid them in the future.” Michael from Mannheim, Germany

SQLpassion Offerings

SQLpassion, a European SQL Server consulting company, provides high-quality SQL Server consulting services. We are based in Vienna, Austria, but our client base is spread across the continent. We provide the following SQL Server services:

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You have seen my Blog Postings?

How to find your worst performing SQL Server queries

I get asked this question over and over again: “I have a SQL Server that is performing badly. How can ...


Introduction to Wait Statistics in SQL Server

Learn about SQL Server 2014 Performance Improvements

Latches, Spinlocks & Lock-Free Data Structures Recording

Statistics on UNIQUEIDENTIFIER columns

Why I don’t (yet) recommend In-Memory OLTP to my customers


Time for a latest SQL Server Quickie:

Upcoming Events

SQL Server Query Tuning Workshop
SQL Server Performance Tuning Workshop

SQLday Poland, Wroclaw/Poland, May 11 – 13


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