text: alter session set nls_date_format='yyyy-mm-dd hh24:mi:ss';
  
  set autocommit off
  
  set classic on
  
  set ddl pretty on
  
  set exitcommit off
  
  set history blacklist history
  set history limit 2000
  set history nofails
  
  set null NULL
  
  set serveroutput on
  
  set sqlformat ansiconsole
  
  set time on
  set timing on
  