Create and scheduler a scheduler job - oracle database script

-- TO schedule a job, first create a schedule, then a program and then a job --Create a schedule  BEGIN DBMS_SCHEDULER.CREATE_SCHEDULE ( Schedule_name => 'DAILYBILLINGJOB',  Start_date => SYSTIMESTAMP,  Repeat_interval =>'FREQ=DAILY;BYHOUR=11; BYMINUTE=30',  Comments => 'DAILY BILLING JOB' ); END;  -- Create a program  BEGIN DBMS_SCHEDULER.CREATE_PROGRAM ( program_name => 'DAILYBILLINGJOB', program_type => 'STORED_PROCEDURE', program_action => 'DAILYJOB.BILLINGPROC' number_of_arguments =>0, enabled => TRUE, comments => 'DAILY BILLING JOB' ); END;   -- Now create the job:  DBMS_SCHEDULER.CREATE_JOB ( job_name => 'DAILYBILLINGJOB_RUN', program_name => 'DAILYBILLINGJOB', schedule_name => 'DAILYBILLINGJOB_SCHED', enabled => FLASE, comments => 'daily billing job' ); END;  -- ENABLE THE JOB  DBMS_SCHEDULER.ENABLE('DAILYBILLINGJOB_RUN');