Below Figure shows SQL Worksheet toolbar. You are already familiar with the Execute Statement icon.
RUN SCRIPT The Run Script icon allows you to execute multiple statements and emulates SQL*Plus as much as possible; the result is displayed in the Script Output tab instead of the Results tab.
COMMIT The Commit icon looks like a database icon with the check mark. Any modifications to the data become permanent and visible to all users.
ROLLBACK The Rollback icon looks like a database icon with an undo arrow. It undoes database changes, provided that they have not yet been committed.
CANCEL, EXECUTE EXPLAIN PLAN, AND AUTOTRACE The Cancel icon stops a running statement that is currently executing. The Execute Explain Plan icon and the Autotrace icons are useful for optimizing SQL statements.
CLEAR The eraser icon (Ctrl-D) at the end of the toolbar clears any statements in the SQL Worksheet.