Automating SQL scripts in Toad for Oracle (13.1)

I'm not a DBA, so bear with me. I've scheduled tasks through Toad's automation designer, but this uses Windows task scheduler. It's using Oracle 12c. All I'm doing is updating (creating/dropping) tables with the most recent data. Then I use an ODBC to report on that data in another application. How can I ensure my scripts execute on time without running a local machine with scheduled tasks? Can this be done without additional software? Thanks in advance.