All about oracle Jobs

This is how a basic job is written :

BEGIN
  DBMS_SCHEDULER.create_job (
    job_name        => 'myJob', 
    job_type        => 'PLSQL_BLOCK',
    job_action      => 'BEGIN procedure_name ; END;',
    start_date      => SYSTIMESTAMP,
    repeat_interval => 'freq=hourly; byminute=0; bysecond=0;',
    end_date        => NULL,
    enabled         => TRUE,
    comments        => 'Job defined entirely by the CREATE JOB procedure.');
END;

Note :  Other types of repeat_interval 
repeat_interval => 'freq=weekly; BYDAY=sun; byhour=8; byminute=0',

repeat_interval  =>  'FREQ=SECONDLY;INTERVAL=10',

This is how job details can be seen :

SELECT * FROM dba_scheduler_jobs;

Stopping job :

BEGIN
DBMS_SCHEDULER.STOP_JOB('procedure_name,job_class');  
END;

Job class can been seen from "dba_scheduler_jobs"  table.

For dropping job use  => DBMS_SCHEDULER.DROP_JOB('procedure_name,job_class');

For disabling job use => DBMS_SCHEDULER.DISABLE('procedure_name,job_class');

For enabling job use => DBMS_SCHEDULER.ENABLE ('procedure_name,job_class'); 

for more info use links : 

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