System Packages Oracle PLSQL Tutorial

SQL>
SQL> -------------------------------
SQL> set serveroutput on
SQL> set lines 200
SQL> -------------------------------
SQL> DECLARE
  2      BEGIN
  3          dbms_output.enable(200000) ;
  4          dbms_output.new_line ;
  5          dbms_output.new_line ;
  6      END ;
  7  /
PL/SQL procedure successfully completed.
SQL>