Introductory Scripts for Active Session History and Automatic Workload Repository

A client of mine asked me to provide a short introductory talk on Oracle's Active Session History (ASH) and Automatic Workload Repository (AWR). I now have put the demonstration scripts on github at https://github.com/ReneNyffenegger/oracle_scriptlets/tree/master/ash-awr/Introduction-Nov-3rd-14. Maybe, someone can profit from the scripts?