All function keys on Mac might require keying the 'fn' button first. Otherwise, enable "Use all F1, F2, etc. keys as standard function keys" in your keyboard preferences.
You can also go into the Preferences and define the shortcut keys to any sequence, and export, import, and share these preferences with other users.
Developed with OS X 10.11
SQLDev KB Shortcuts OS X Cheat Sheet by thatjeffsmith
shortcut keys for oracle sql developer, on a mac