SQL>set colsep' ';
SQL>set echo off;
SQL> set echo on
SQL> set feedback on;
SQL>set feedback off;
SQL>set heading off;
SQL>set pagesize 0;
SQL>set linesize 80;
SQL>set numwidth 12;
SQL>set termout off;
SQL>set trimout on;
SQL>set trimspool on;
SQL>set serveroutput on;
SQL> set timing on;
SQL> set autotrace on-;
SQL> set verify off
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