利用触发器锁住自己的代码防止他人改动

create or replace trigger LockSourcebeforecreateon  SCHEMA
declare
beginif SYS_CONTEXT('USERENV','OS_USER') = '自己的机器名'thenreturn;end if;if ora_dict_obj_name in ('xxxx1_PACKAGE','xxxx2_PACKAGE')thenraise_application_error(-20001, 'Stop!!!');end if;
end LockSource;
/