about ORA-12638: Credential retrieval failed

[rain11er]

I start my oracle database from dos,

C:\>svrmgrl
Oracle Server Manager Release 3.1.6.0.0 - Production
Copyright (c) 1997, 1999, Oracle Corporation. All Rights Reserved.
ORA-12638: Credential retrieval failed

i find sqlnet.ora comment out SQLNET.AUTHENTICATION_SERVICES = (NTS)

restart database,but

C:\>svrmgrl

Oracle Server Manager Release 3.1.6.0.0 - Production

Copyright (c) 1997, 1999, Oracle Corporation. All Rights Reserved.

Oracle8i Release 8.1.6.0.0 - Production
JServer Release 8.1.6.0.0 - Production

SVRMGR> connect internal/oracle
ORA-01017: invalid username/password; logon denied

thanks.

[soniaarora]

From Metalink:

Check the location of your sqlnet.ora file and make
sure that you have only one copy of this file.
Comment out these parameters in the sqlnet.ora file
if you are not using ASO and if it is present.

SQLNET.AUTHENTICATION_SERVICES = (NONE)
sqlnet.crypto_seed = "randomly-chosen text"

[rain11er]

yes, i had Comment out these parameters .this is my sqlnet.ora

# SQLNET.ORA Network Configuration File: D:\Oracle\Ora81\network\admin\sqlnet.ora
# Generated by Oracle configuration tools.

#SQLNET.AUTHENTICATION_SERVICES= (NTS)

NAMES.DIRECTORY_PATH= (TNSNAMES, ONAMES, HOSTNAME)

[rain11er]

this question have resolved.

i restrart my computer,this question resolved.
but i also have a question ,my database can't
auto start ,erery time i must from dos start my database
for example :

svrmgrl
conncet internal
startup

[TomazZ]

If DB on NT/2K in registry ...local_machine/software/oracle/home? you have ORA__AUTOSTART key, which has to be true.

Tomaz