Database: Oracle 220.127.116.11
OS: Windows Server 2008 R2
I am trying to create a database link from a RAC database to a remote database. I have added an entry for the remote database in the tnsnames.ora on all RAC servers but when I try a SQLplus connection I get:
ORA-12638 Credential retrieval failed
The sqlnet.ora has the following entry:
I know setting this to (NONE) will prevent this ORA-12638 error but my understanding is that NTS is required for RAC - please correct me if you I'm wrong?
Basically, I want to use Oracle username/password authentication for a database link without setting the SQLNET.AUTHENTICATION_SERVICES= (NONE)
All comments welcome !
Look this thread is about the same error : "ora-12638 credential retrieval failed" .
Also read http://www.dba-oracle.com/t_ora_12638_credential_retrieval_failed.htm
Kind regards, Bruno Reis.
Thanks for the reply, Bruno. Helpful information on that thread but I don't think it resolves my problem.
To simply my problem, does anyone know if there is any issue with setting SQLNET.AUTHENTICATION_SERVICES= (NONE) on the the database home of RAC, but leave the SQLNET.AUTHENTICATION_SERVICES= (NTS) on the Grid Infrastructure home?