But this do happens in my environment. It happens in both "8i on Linux" and "9i on Win".

I can connect use any typing, like aaa/kkk, and aaa is not a username, I can just type anything. See the follow:

8i on Linux
============================================================
[oracle@LYLINUX oracle]$ sqlplus

SQL*Plus: Release 8.1.7.0.0 - Production on Wed Oct 2 09:22:11 2002

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

Enter user-name: aaa/kkk as sysdba

Connected to:
Oracle8i Enterprise Edition Release 8.1.7.0.1 - Production
With the Partitioning option
JServer Release 8.1.7.0.1 - Production

SQL> show user
USER is "SYS"
SQL> exit
Disconnected from Oracle8i Enterprise Edition Release 8.1.7.0.1 - Production
With the Partitioning option
JServer Release 8.1.7.0.1 - Production
[oracle@LYLINUX oracle]$ exit

===========================================================

9i on win2000
***********************************************************
C:\>sqlplus

SQL*Plus: Release 9.2.0.1.0 - Production on Wed Oct 2 09:54:53 2002

Copyright (c) 1982, 2002, Oracle Corporation. All rights reserved.

Enter user-name: ddd/fff
ERROR:
ORA-01017: invalid username/password; logon denied


Enter user-name: ddd/fff as sysdba

Connected to:
Oracle9i Enterprise Edition Release 9.2.0.1.0 - Production
With the Partitioning, OLAP and Oracle Data Mining options
JServer Release 9.2.0.1.0 - Production

SQL>
SQL> show user
USER is "SYS"
SQL> show parameter remote_login

NAME TYPE VALUE
------------------------------------ ----------- -----------
remote_login_passwordfile string EXCLUSIVE
SQL>

***********************************************************

So strange! Any idea? Thanks!

[Edited by ly on 10-01-2002 at 09:54 PM]