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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.

Archives: March 2015

Latches, Spinlocks & Lock-Free Data Structures Recording

A few weeks ago I have spoken at the SQLRally Nordic conference in Copenhagen about Latches, Spinlocks, and Lock-Free Data Structures in SQL Server. Fortunately my 2.5 hour long non-stop session was recorded, and is now finally available at Youtube for watching.

Enjoy!

-Klaus

Read more

4 comments, 1,165 reads

Posted in Klaus Aschenbrenner on 30 March 2015

Statistics on UNIQUEIDENTIFIER columns

During the SQLRally conference in Copenhagen/Denmark, Brent Ozar (Blog, Twitter) and I had a very interesting conversation regarding Statistics on UNIQUEIDENTIFER columns. It seems that SQL Server shows some very nasty behavior here. Let’s have a look.

The repro

To show you the behavior we have complained… Read more

6 comments, 903 reads

Posted in Klaus Aschenbrenner on 16 March 2015

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

Ok, some of you will hate me after this blog posting, but it has to be said. Over the last months I have done a lot of work in the area of In-Memory OLTP, and I also had a lot of customer requests regarding this amazing new technology. Unfortunately none… Read more

10 comments, 766 reads

Posted in Klaus Aschenbrenner on 11 March 2015

Transaction Logging in In-Memory OLTP (Hekaton)

In today’s blog posting I want to talk in more detail about how In-Memory OLTP logs transaction log records into the transaction log. As you might know, In-Memory OLTP offers you 2 durability options for your Memory Optimized Tables:

  • SCHEMA_ONLY
  • SCHEMA_AND_DATA

I don’t want to talk more about SCHEMA_ONLY Read more

0 comments, 967 reads

Posted in Klaus Aschenbrenner on 9 March 2015

In-Memory OLTP & Deadlocking – my SQLBits sessions

After speaking at the SQLRally conference in Copenhagen earlier this week, my next stop was at the SQLBits conference in London, where I have presented 2 sessions:

  • In-Memory OLTP
  • Deadlocking

As promised at the end of both sessions, you can download the slides & samples for your further reference.

If… Read more

0 comments, 535 reads

Posted in Klaus Aschenbrenner on 7 March 2015

Latches, Spinlocks & Lock-Free Data Structures – my SQLRally Nordic session

Whew, this was an intensive session about Latches, Spinlocks & Lock-Free Data Structures at the SQLRally Nordic conference in Copenhagen. I hope you have enjoyed this session as much as I have enjoyed it to present it in front of a fully packed room – with an engaging audience

As… Read more

2 comments, 548 reads

Posted in Klaus Aschenbrenner on 4 March 2015

SQL Server Quickie #22 – The Buffer Pool

Today I have uploaded the 22th SQL Server Quickie to YouTube. This time I’m talking about the Buffer Pool in SQL Server.

[viral-lock message=”Like or share to get the source code.” tweet=”SQL Server Quickie #22 – The Buffer Pool by @Aschenbrenner:” url=”http://www.SQLpassion.at/archive/2015/03/02/sql-server-quickie-22-buffer-pool”]You can find the script used during the demonstration… Read more

5 comments, 640 reads

Posted in Klaus Aschenbrenner on 2 March 2015