Gary Propeck earned a Ph.D. in Physical Organic Chemistry from the University of South Florida in 1984. In 1990, while working at a DOE facility, he began working with the Oracle Database in a chemistry laboratory environment. In 1995, Gary went to work for Oracle Education (now Oracle University) as an instructor and taught the OU curricula for Database Administration, Tools (Forms, Reports, etc.), Oracle Application Server, and Languages (SQL, PL/SQL, and Java) and made numerous presentations at events such as Open World and RMOUG Training Days. In 2002, Gary went to work for Corporate Express as a DBA, then decided to go back to teaching as an independent contractor, teaching much of the same curricula as before, while adding new courses such as OEM and APEX to his repertoire. In 2009 Gary went to Hotsos, where he began teaching as a contractor then as a Hotsos employee where he taught the Performance Tuning curriculum. Currently, Gary is semi-retired, teaching on an occasional contract basis.