Possibly, one of the most commonly used group of SQL*Plus commands are those that run scripts:
@@, and start. The script runner emulates a limited set of SQL*Plus features. You can often enter SQL and SQL*Plus statements and execute them by clicking the Run Script icon, which is shown in the next screenshot. The Script Output pane displays the output.
You need to use
@@ when running one script that calls a second or third script. In this case, it is necessary to set the path for the top-level file.
For either, set the path navigating to Database | Worksheet. Press F5 to run the script.
Set the default path for executing ...