I try to login to SQL using the below actions.
$ cd bin

$ sqlplus

SQL*Plus: Release - Production on Thu Dec 12 08:30:22 2002

(c) Copyright 2001 Oracle Corporation. All rights reserved.

Enter user-name: system
Enter password:
ORA-01090: shutdown in progress - connection is not permitted

How can I login or, shut down SQL so i can gert in normally? ANy clues?