create or replace trigger tr_ddl
before ddl on database
declare
l_errmsg varchar2(100) := '你无权修改,项目组!!!';
begin
if (Ora_dict_obj_type = 'TABLE' or Ora_dict_obj_type='INDEX') AND
(ora_dict_obj_owner ='NCCMOLTP_HNS' or ora_dict_obj_owner='NCCMHIST_HNS') and ora_login_user not in ('SYS', 'SYSTEM') and
     (Ora_sysevent = 'ALTER' OR Ora_sysevent = 'DROP') then
    raise_application_error(-20001,
                            ora_dict_obj_owner || '.' || ora_dict_obj_name || ' ' ||
                            l_errmsg);
end if;

   if (Ora_dict_obj_type = 'TRIGGER' ) AND
(ora_dict_obj_owner ='NCCMOLTP_HNS' or ora_dict_obj_owner='NCCMHIST_HNS') and ora_login_user not in ('SYS', 'SYSTEM') and
     (Ora_sysevent = 'ALTER' OR Ora_sysevent = 'DROP' or Ora_sysevent = 'CREATE') then
    raise_application_error(-20001,
                            ora_dict_obj_owner || '.' || ora_dict_obj_name || ' ' ||
                            l_errmsg);
end if;

exception
when no_data_found then
    null;
end;

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ORACLE DDL触发器

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