| ORA-12638 [message #68375] |
Wed, 02 July 2003 00:38  |
Andrew
Messages: 144
Registered: March 1999
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Senior Member |
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Then I Create DB appears error ORA-12638:
Credential retrieval failed.
Error appears not dependent from that where i create DB:
by script or by DB Configuration Assitant
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| Re: ORA-12638 [message #68720 is a reply to message #68375] |
Wed, 28 July 2004 13:06  |
Frank Naude
Messages: 4581
Registered: April 1998
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Senior Member |
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Hi,
Outcomment or set the following parameter to NONE in your "sqlnet.ora" file:
# SQLNET.AUTHENTICATION_SERVICES= (NTS)
Best regards.
Frank
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| Re: ORA-12638 [message #68919 is a reply to message #68720] |
Mon, 07 February 2005 01:16 |
megart
Messages: 1
Registered: February 2005
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Junior Member |
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Hi,
this correction helps me
to resolve some other problems
related with ASP and oricle
connection.
Thank you muchly
Мю
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| Re: ORA-12638 [message #117283 is a reply to message #68375] |
Tue, 26 April 2005 05:14 |
Thomf
Messages: 4
Registered: April 2005
Location: Paris, France
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Junior Member |
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Hi,
I did the same on a custom PC but it did not solve anything.
So, my question is: do I have to do it on sqlnet.ora server
file instead of custom file.
Thanks for your answer.
Thomas
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| Re: ORA-12638 [message #171712 is a reply to message #68375] |
Thu, 11 May 2006 03:42 |
akr54
Messages: 1
Registered: May 2006
Location: FRANCE
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Junior Member |
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You may change your "SQLNET.ORA" file with both :
SQLNET.AUTHENTICATION_SERVICES= (NONE,NTS)
And thanks for your answers that solved my problem too.
AK from FRANCE
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 Re: ORA-12638 [message #211375 is a reply to message #188466] |
Thu, 28 December 2006 04:38 |
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Well Guys, I'm not that much expert guy in Oracle, but from what can make out the NTS (Network Telephony Services)makes the Oracle client attempt to use your current Windows domain credentials to authenticate you with the Oracle server. This could fail for a couple of reasons:
- The Oracle server is not configured to support Windows authentication
- The credentials you use to login to your local machine are not sufficient to allow you to login to the server.
In my case, our Network Administrator had changed the password OS user, while rebooting the system, the Oracle popped up with the Credential Failure.
Replacing the line:
SQLNET.AUTHENTICATION_SERVICES= (NTS)
with
SQLNET.AUTHENTICATION_SERVICES= (NONE)
in sqlnet.ora resolved the issue by disabling local support for authenticating using Windows credentials.
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 Re: ORA-12638 [message #211391 is a reply to message #118770] |
Thu, 28 December 2006 06:30 |
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The NTS (Network Telephony Services)makes the Oracle client attempt to use your current Windows domain credentials to authenticate you with the Oracle server. This could fail for a couple of reasons:
- The Oracle server is not configured to support Windows authentication
- The credentials you use to login to your local machine are not sufficient to allow you to login to the server.
In my case, our Network Administrator had changed the password OS user, while rebooting the system, the Oracle popped up with the Credential Failure.
Replacing the line:
SQLNET.AUTHENTICATION_SERVICES= (NTS)
with
SQLNET.AUTHENTICATION_SERVICES= (NONE)
in sqlnet.ora resolved the issue by disabling local support for authenticating using Windows credentials.
Warm rgds/Zmarak
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| Re: ORA-12638 [message #304586 is a reply to message #218951] |
Wed, 05 March 2008 13:48 |
jplanaro
Messages: 1
Registered: August 2006
Location: Brazil
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Junior Member |
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Hi, I am facing this problem between 2 instances in different servers.
I have to use SQLNET.AUTHENTICATION_SERVICES= (NTS) because we use windows (AD) authentication.
Does anybody know something about it ?
Thanks in advance
Joao
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