In chapter 13 - Profiling for Performance - of your book 'Expert PL/SQL Practices' your examples reference version 2.5 of ILO. Is ILO version 2.5 available? A working example of ILO was one of the reasons I purchased the book (it was the first chapter I read!).
Much like Ian, I too am using the book "Expert PL/SQL Practices" and found the examples for ILO that requires version 2.5. Have you made this version available and if so, how may I obtain it? I did get one update that provides package updates to take advantage of the ELAPSED_TIME table. Perhaps that's what made up version 2.4 ? Addtionally, in reviewing Robyn Sands presentation on "Using Instrumentation to Ensure Performance from RMOUG 2011" she references a table named ilo_config_module which seems to be an option to start a trace and timing by updating a table. Perhaps this is part of version 2.5
This is something I would love to try out if available.
Thank you very much for your time and I look forward to hearing back from you