URGENT!!! How to kill a SYS session

Question

What is the command to kill a SYS session? Let's say someone figured out the SYS password and logged in. Now I want to kill the session. What do I do?
The ALTER SYSTEM KILL SESSION 'SID,SERIAL#' does not work.
URGENT!!!!

Answer 1

Hi,
>>The ALTER SYSTEM KILL SESSION 'SID,SERIAL#' does not work.
Why not ?
C:\>sqlplus sys/******* as sysdba
SQL*Plus: Release 10.1.0.2.0 - Production on Fri Jun 15 17:06:26 2007
Copyright (c) 1982, 2004, Oracle.  All rights reserved.
Connected to:
Oracle Database 10g Enterprise Edition Release 10.1.0.2.0 - Production
With the Partitioning, OLAP and Data Mining options
SYS@ORACLE10> SELECT userenv('ISDBA') from dual;
USEREN
TRUE
SYS@ORACLE10> select sid,serial# from v$session where sid=(select distinct sid from v$mystat);
       SID    SERIAL#
       236      22100
Other session:
[pre]
C:\>sqlplus system/*********
SQL*Plus: Release 10.1.0.2.0 - Production on Fri Jun 15 17:07:02 2007
Copyright (c) 1982, 2004, Oracle.  All rights reserved.
Connected to:
Oracle Database 10g Enterprise Edition Release 10.1.0.2.0 - Production
With the Partitioning, OLAP and Data Mining options
SYSTEM@ORACLE10> alter system kill session '236,22100';
System altered.
Back to one ...
SYS@ORACLE10> select sysdate from dual;
select sysdate from dual
ERROR at line 1:
ORA-00028: your session has been killedCheers