I’m happy that I was able to win Martin Merdes as a contributor to this Blog. Martin is a Microsoft PFE (Premier Field Engineering) engineer working in the SAP/SQL porting group at SAP headquarters in Walldorf. He is the most senior member of our team of PFE engineers with more than 12 years experience in SAP and SQL Server. Initially Martin will explain how to use HANGMAN, a tool he developed over the last years to analyze blocking situations on Database and SAP Application side. You can find this first contribution below. Awesome work Martin, we are looking forward to see more articles from you.