Hi, guys

I have problem with starting up database on NT server (Windows 2000 Version 5.0 Service Pack 4, CPU type 586, Number of CPU 2).
I am getting errors:

SQL*Plus: Release - Production on Tue Oct 7 05:44:45 2003

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

Connected to an idle instance.

SQL> startup;
ORACLE instance started.

Total System Global Area 135338868 bytes
Fixed Size 453492 bytes
Variable Size 109051904 bytes
Database Buffers 25165824 bytes
Redo Buffers 667648 bytes
ORA-12709: error while loading create database character set

SQL> alter database mount;
alter database mount
ERROR at line 1:
ORA-12709: error while loading create database character set

I checked metalink and found no solution for my problem.
Environmet ORA_NLS33 is set to correct directory (ORA_NLS33=D:\Oracle\Ora92\ocommon\nls\ADMIN\DATA), NLS_LANG is set as well to NLS_LANG=AMERICAN_AMERICA.WE8ISO8859P15

Information I found in metalink :

Actually, Oracle on this machine does not seems to work at all, I have tried install 8.1.7 and I could not compile any trigger, I was getting error: "PLS-00553 character set name is not recognized"

In both cases NLS_ORA33 and NLS_LANG were set.

Please let me know, if you have some ideas about above.