1.创建触发器

create or replace trigger trigger_name_xxx
after delete or update or insert
on table_name_yyy for each row
[declare var_name_zzz type_name_ttt;]
begin
    if delete then
        .....;
    end if;
    if update then
        .....;
    end if;
    if insert then
        .....;
    end if;
end;

2.创建过程

create or replace procedure procedure_name_xxx
as
[var_name_zzz type_name_ttt;]
begin
       ......;
end;

3.创建任务调度

declare job_name_xxxx number;   
begin
 　　dbms_job.submit(job_name_xxxx,‘proc_name_yyyy;‘,TRUNC(sysdate+1)+2/24,‘TRUNC(sysdate+1)+2/24‘);
end;

Oracle的触发器、任务的创建方式