–display the sql commands or PL/sql statements
SET ECHO ON
–display Exec results of the sql commands or PL/sql statements
SET FeedBACK ON
–display output that DBMS_OUTPUT generates.
SET SERVEROUTPUT ON
–Hide the heading of a select result.
SET heading OFF
–Hide the output on the screen when spooling
SET TERMOUT OFF
–Hide timestamp in the output file
SET TI OFF
