Timing Bind variable : Execute Immediate « PL SQL « Oracle PL / SQL

Timing Bind variable

  
SQL>
SQL>  alter system flush shared_pool;

System altered.

SQL>      set serveroutput on
SQL>      declare
  2          l_start number;
  3          l_cnt   number;
  4      begin
  5          l_start := dbms_utility.get_time;
  6
  7          for i in 1 .. 100
  8          loop
  9              execute immediate
 10             'select count(*) from dual where dummy = ''' || to_char(i) || '''' INTO l_cnt;
 11         end loop;
 12
 13         dbms_output.put_line( 'No Binds ' || (dbms_utility.get_time-l_start) || ' hsecs' );
 14         l_start := dbms_utility.get_time;
 15         for i in 1 .. 100
 16         loop
 17             execute immediate 'select count(*) from dual where dummy = :x'
 18             INTO l_cnt
 19             USING to_char(i);
 20         end loop;
 21         dbms_output.put_line( 'Binding ' || (dbms_utility.get_time-l_start) || ' hsecs' );
 22     end;
 23     /
No Binds 7 hsecs
Binding 1 hsecs

PL/SQL procedure successfully completed.

SQL>

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