Server Administration :: OS Authentication Is Not Working In 11G?

OS authentication is not working

Does 11g need any different setting?

Following are the settings

1)

SQL> show parameter os_a

NAME TYPE VALUE
------------------------------------ ----------- --------------
os_authent_prefix string OPS$
remote_os_authent boolean FALSE

2) sqlnet.ora has following setting

SQLNET.AUTHENTICATION_SERVICES = (NTS)

3) I have created user like following

sql> create user OPS$CLASS
2 identified externally
3 default tablespace user_data
4 temporary tablespace temporary_data
5 profile clas_prof
6 account unlock;

user created.

sql> grant connect to OPS$CLASS;

Grant succeeded.

With the same settings it successfully connects from my 9i client to the 9i database
(DB01, below)

C:Documents and SettingsCLASS_user>sqlplus

SQL*Plus: Release 9.2.0.1.0 - Production on Wed Apr 20 10:18:58 2011

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

Enter user-name: /@DB01

Connected to:
Oracle9i Enterprise Edition Release 9.2.0.6.0 - 64bit Production
With the Partitioning, OLAP and Oracle Data Mining options
JServer Release 9.2.0.6.0 - Production

SQL> exit
Disconnected from Oracle9i Enterprise Edition Release 9.2.0.6.0 - 64bit Production
With the Partitioning, OLAP and Oracle Data Mining options
JServer Release 9.2.0.6.0 - Production

However it fails to connect to 11G database (DB02, below)

C:Documents and SettingsCLASS_user>sqlplus

SQL*Plus: Release 9.2.0.1.0 - Production on Wed Apr 20 10:19:29 2011

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

Enter user-name: /@DB02
ERROR:
ORA-01017: invalid username/password; logon denied