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Oracle client connectivity to Database in different Windows work Domain [message #640108] Wed, 22 July 2015 07:39 Go to next message
veeravenkatesh.b
Messages: 1
Registered: July 2015
Location: INDIA
Junior Member
Hi,

Data Base instance is created in a server connected windows work domain "A". I want to connect same DB instance to client. The client Computer is in another work Domain "B".
By connecting through net service manger it is showing an error "ORA-12638: Credential retrieval failed". If client is in same computer work domain "A", connecting successfully.

Is it possible to connect to DB where the client is in another work domain?
If it is possible please guide me.

Thanks & Regards,
Veera
Re: Oracle client connectivity to Database in different Windows work Domain [message #640112 is a reply to message #640108] Wed, 22 July 2015 08:29 Go to previous messageGo to next message
Michel Cadot
Messages: 66048
Registered: March 2007
Location: Nanterre, France, http://...
Senior Member
Account Moderator

You have to show us what you did when you got the error.
The best way is copy and paste your SQL*Plus session.
Otherwise:
ORA-12638: Credential retrieval failed
 *Cause:  The authentication service failed to retrieve the credentials of a
          user.
 *Action: Enable tracing to determine the exact error.


Re: Oracle client connectivity to Database in different Windows work Domain [message #640236 is a reply to message #640112] Fri, 24 July 2015 06:20 Go to previous message
ashokkhdba
Messages: 4
Registered: June 2015
Location: Bangalore
Junior Member
The ORA-12638 is an Oracle database error, indicating that the SQL*Net client was unable to connect to the database. In Windows, the Oracle Windows client attempt to use your current Windows domain credentials to authenticate you with the Oracle server. This could fail because the Windows box is not configured to support Windows authentication or because the credentials you use to login to your local machine are not sufficient to allow you to login to the server. There are several possible resolutions for the ORA-12638 error:

1: In on Windows, bounce the server (stop and re-start) the Windows services for Oracle.

2: The following direction was given, and once administered, was a successful resolution to ORA-12638:

Please change the sqlnet.ora file in the $ORACLE_HOME/network/admin directory. Change the following entry and the ORA-12638 error will disappear:

Change - SQLNET.AUTHENTICATION_SERVICES= (NTS)

To: - SQLNET.AUTHENTICATION_SERVICES= (NONE)
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