There is a nice feature of Oracle SQL Developer that allows once to assign numbers to tabs and then via a keystrokes one can switch between the tabs like Windows ALT-Tab does for applications in the Windows OS.
Assign a number like 1 to a tab by pressing SHIFT-ALT-1 while that is the active tab. You will see a miniature "1" at the beginning of the tab. Then whenever you want to go to that tab press ALT-1. Nice!!