连续创建多个Oracle触发器失败，单个创建才成功的解决方法
1、当我连续执行创建多个触发器时，总是报编译通过，但存在警告或错误。如下：
create or replace trigger tr_advert
before insert on jcms_advert
for each row
begin
select seq_advert.nextval into :new.id from dual;
end;
create or replace trigger tr_advert_type
before insert on jcms_advert_type
for each row
begin
select seq_advert_type.nextval into :new.id from dual;
end;
这种创建是失败的，因为触发器需要先编译，每创建一个触发器，需要以“/”结束，然后才能执行下一个。
2、正确的创建方法如下：
create or replace trigger tr_advert
before insert on jcms_advert
for each row
begin
select seq_advert.nextval into :new.id from dual;
end;
/
alter trigger tr_advert enable;
create or replace trigger tr_advert_type
before insert on jcms_advert_type
for each row
begin
select seq_advert_type.nextval into :new.id from dual;
end;
/
alter trigger tr_advert_type enable;