Harry Kimpel
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XMI to XMI converter

Created: Aug 05, 2010

While playing around with some XMI (XML Metadata Interchange) importing/exporting functionality, I found this great blog: Modeling LAnguages (original URL https://modeling-languages.com). His service to convert from one XMI format to another is just awesome. Have a look at this site: XMI2 - A tool for exchanging UML models among CASE tools (original URL https://modeling-languages.com/content/xmi2-tool-exchanging-uml-models-among-case-tools).

Oracle conflict with Oracle Database and Oracle Containers 4 Java

Created: Jun 29, 2010

Here is a nice conflict between Oracle products. I installed “Oracle Database 10g Express Edition” along with “Oracle Containers 4 Java” as the application server to run my J2EE app on. I installed the database engine first and then configured OC4J. OC4J needs an environment variable called ORACLE_HOME in order to run. This needs to point to the folder where you unzipped it. Everything worked just fine at this stage .

ASP.NET session state store provider for MySQL available on sourceforge

Created: Jun 09, 2010

I finally managed to add this project on sourceforge … here is the link

SQL Server 2008 installation fails due to "Restart required"

Created: Apr 26, 2010

I currently ran into an interesting issue when installing MS SQL Server 2008. During the initial checks at startup of the installation process I got the following error: “Restart required”. So I restarted my computer but without success. I got exactly the same error message again.

I found out that this happens due to a wrong registry entry. In order to get the prerequisite-checks to succeed I had to delete the value of the following registry entry:

ASP.NET session state store provider for MySQL (2nd Update)

Created: Dec 02, 2009

A couple of days ago I received an email from Steven Davis. He proposed some brilliant enhancements to the MySQL session state store provider. Thanks to him, I am able to provide a new release of it today.

New features he incorporated into the provider are:

  • added cluster db support: the ability to retry within a cluster of servers, the web.config can then use connectionStringList=","
  • fixed timeout Minutes to TotalMinutes
  • changed namespace to Kimpel.MySqlSessionDll to make debugging clearer

Release v.03 now also supports MySQL Connector/Net 6.2. I also added a SQL script to create the necessary sessions table.

Reinventing the computer desktop interaction

Created: Nov 23, 2009

I really like the idea and hope to see some of it in the near future. Have a look at this video:

(original URL https://vimeo.com/moogaloop.swf?clip_id=6712657&server=vimeo.com&show_title=1&show_byline=1&show_portrait=0&color=&fullscreen=1)

10/GUI from C. Miller on Vimeo.

Microsoft Virtual PC: lessons learned in virtualization

Created: Oct 16, 2009

I am using Microsoft’s Virtual PC quite heavily in all my development projects since it has lots of advantages in my day to day work … especially when working in multi-project environments.

It is just until this week that I learned a very important lesson in this area. I can’t imagine how difficult and inefficient my setup has been. I found this very interesting blog entry “HOWTO: Use Virtual PC’s Differencing Disks to your Advantage” by Andrew Connell that makes life so much easier and in additon to that saves tons of space on my harddrive.

Hibernate Exception: Unable to instantiate default tuplizer

Created: Sep 22, 2009

I just ran into an interesting exception within a Java project. I implemented a couple of Java classes along with hibernate mapping files. Until today, everything worked just fine.

I then added some attributes/properties to a class and completed the mapping file. After deploying and testing the application I ran into the following hibernate exception:

org.hibernate.HibernateException: Unable to instantiate default tuplizer [org.hibernate.tuple.entity.PojoEntityTuplizer]

I really couldn’t figure out what was wrong and tried almost everything. I just overlooked a little tiny detail: I misspelled a getter-method in the Java class and this led to the exception above.

Home Entertainment System (Win Media Center, Xbox 360)

Created: Aug 14, 2009

I am totally excited about my new home entertainment system. It uses a standard digital satellite dish along with an external FireDTV (Digital Everywhere) digital TV receiver connected to my more or less frumpy desktop PC. The computer runs Windows 7 RC with Media Center configured to use the satellite box.

My living room is equipped with a Xbox 360 connected to the TV. The Xbox 360 and my desktop PC talk to each other via powerline AV ethernet connection (since I totally forgot to put a system of conduits in my home).

Installing Windows 7 RC ... getting around CDBoot code 5

Created: Jul 28, 2009

Just recently I wanted to give Windows 7 RC a test drive. I used to run Windows XP on a pretty old fashioned computer with the following setup:

- AMD Athlon XP 1600+
- 2 GB RAM
- ASROCK K7VT4A Pro
- ASUS V7100 Pro

This setup works quite decently. Well, at least for the purpose I am using this machine for which is emailing, surfing and some document and media management.
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© Harry Kimpel 2025
Disclaimer: The opinions expressed herein are my own personal opinions and do not represent my employer’s view in any way.