Scheduled JOB, Oracle DB

BEGIN
dbms_scheduler.create_schedule(  
schedule_name  => 'INTERVAL_EVERY_1_MINUTES',  
  start_date    => trunc(sysdate),  
  repeat_interval => 'freq=MINUTELY',  
  comments     => 'Runtime: Every minut');
 
  dbms_scheduler.create_program  
(program_name=> 'PROG_DO_HR_INSERT',  
 program_type=> 'PLSQL_BLOCK',  
 program_action=> 'BEGIN  INSERT INTO HR.HEXA VALUES('actiont','FRM MINUT SCHEDULE-R'); COMMIT; END',  
 enabled=>true,  
 comments=>'Procedure to save sample Data to \hexa table every Minut'  
 );
 
  dbms_scheduler.create_job  
 (job_name => '30_OCT_2011_Job1',  
  program_name=> 'PROG_DO_HR_INSERT',  
  schedule_name=>'INTERVAL_EVERY_1_MINUTES',  
  enabled=>true,  
  auto_drop=>false,  
  comments=>'Job to  save sample Data to \hexa table every Minut');
 COMMIT; 
 END;