Cannot kill a user connected to the database

Hi,

I have to kill this user on my database but it cannot be killed.

When I check v$session, there's the user.

However, when I try to kill the user by

alter system kill session 'sid,serial#' immediate

It says ORA-00030: User session ID does not exist.

How should I do in this case?

I couldn't even shutdown the database.

Whenever I try to shutdown the database, it just hangs.

Thank you. Received on Mon Mar 19 2007 - 15:12:01 CDT