Sorry, I didn't mean to imply all of OEM was based on Oratcl, just the Tcl extension used to access the database. I was listed in one of the OEM manuals in the copyright statement, along with the RBOC where I worked when I created Oratcl. I don't recall the names of the people at Oracle who contacted me to tell me they were using Oratcl, perhaps 'Mario' or 'Eric' ??
The funny part was when I got an email from someone at Oracle, perhaps in legal, who wanted me to sign an "indemnify and hold harmless" statement for my code, code that I shared freely, received no compensation for, and had no control on how it was used by Oracle in their product -- Rrriiight. I replied "no thanks", and if Oracle wanted to use my software, they simply should comply with the BSD license that it shipped with, including the attribution clause.