Can any senior member help me:
1) I connected from my workstation to oracle database usiing sqlplus window by giving /nolog@utl1 as user value which gave the sql> as shown below
2) When I am connecting to utl1 database as sysdba as shown below I am getting an error, but when I am connecting as sys it is connecting without any problem. Why is it so?
NOTE: It can be seen that I set the timing to make it evident that the commands have been issued immediately one after other and no alterations were made in between
When I am trying to connect from sqlplus window I am getting the error as shown below:

SQL*Plus: Release - Production on Tue Oct 29 14:19:18 2002

(c) Copyright 2000 Oracle Corporation. All rights reserved.

SQL> set time on
14:19:24 SQL> connect sys/sysau19@utl1 as sysdba
ORA-01017: invalid username/password; logon denied

14:19:39 SQL> connect sys/sysau19@utl1
14:19:52 SQL> show user
14:19:54 SQL>