CREATE AND DROP

Question

Hi all,
i have a user in a big database like HR i can create,drop and do any thing with my schema's tables ........now the problem is this
I want some table to create and never to be dropped so can i myself revoke my permission on those table to drop ....If yes tell me how because those table are very important and i want to get free from that no one from that user(HR) can drop or truncate that table........only update can be possible....remember no drop n truncate...this will be really a great help to because it will make my database tension free for me...:).
I am not system user remember i m in HR kinna user
UDAY

Answer 1

> Tigger won't stop him from dropping ......
Really?
SQL> create or replace trigger DDL_GUARD
2 before DROP or TRUNCATE
3 on schema
4 begin
5 raise_application_error( -20001, 'You are not allowed to DROP or TRUNCATE tables in this schema. ' );
6 end;
7 /
Trigger created.
SQL>
SQL>
SQL> create table emp ( emmpid number, deptid number );
Table created.
SQL>
SQL>
SQL> drop table emp;
drop table emp
ERROR at line 1:
ORA-00604: error occurred at recursive SQL level 1
ORA-20001: You are not allowed to DROP or TRUNCATE tables in this schema.
ORA-06512: at line 2
SQL>
SQL> descr emp
Name Null? Type
EMMPID NUMBER
DEPTID NUMBER