Re: ORA-12638 Credential Retrieval Failed

From: Dan Metzger <Dan_Metzger_at_bobcat.com>
Date: Thu, 6 Jan 2000 09:08:18 -0600
Message-ID: <Dd2d4.399$Z4.39359@news.corpcomm.net>

FYI, here's the error generated int eh sqlnet log on the server...

Fatal NI connect error 12638, connecting to: (LOCAL=NO)   VERSION INFORMATION:
TNS for 32-bit Windows: Version 8.1.5.0.0 - Production Oracle Bequeath NT Protocol Adapter for 32-bit Windows: Version 8.1.5.0.0 - Production
Windows NT TCP/IP NT Protocol Adapter for 32-bit Windows: Version 8.1.5.0.0 - Production
  Time: 06-JAN-00 08:59:42
  Tracing not turned on.
  Tns error struct:
    nr err code: 0
    ns main err code: 12638
    TNS-12638: Credential retrieval failed     ns secondary err code: 0
    nt main err code: 0
    nt secondary err code: 0
    nt OS err code: 0

Dan

Rick Wessman <rwessman_at_us.oracle.com> wrote in message news:socln63l1b1.fsf_at_rwessman-sun.us.oracle.com...
> Frank van Bortel <f.van.bortel_at_vnl.nl> writes:
>
> > Dan Metzger wrote:
> >
> > > I just set up up 8.1.5 on NT and am trying to connect to the db via a
win95
> > > client now. The DB runs fine on the server and I can connect to the
data
> > > source but whenever I test the service name I've created on the
client, I
> > > get this error.
> > >
> > > ORA-12638 Credential retrieval failed
> > >
> > > Any ideas?
> > >
> > > Dan M
> >
> > Off the top of my head: any 12xxx is a networking error. Not familiar
with this
> > one.
> In this case, this error means that the Windows 95 client cannot
authenticate
> itself to the NT server. This is a known bug and (I believe) there is a
fix
> for it. Oracle Support will know for sure.
>
>
> BTW, this error is a "catchall" and can be generated in many ways.
>
> > Do you have CRYPTO_SEED on either side (but not the other?).
> > This forces encrypted connections. If the server is set up to accept
only
> > encrypted
> > connections, but the client is not, I can imagine something like the
above to
> > appear.
> In a word, no. :-) the CRYPTO_SEED parameter does not affect network
> authentication, only encryption.
>
> Rick
>
> P.S. In previous posts, I stated that there was no workaround to this
> problem. I was mistaken.
>
> >
> > HTH
> > --
> > Met vriendelijke groet/kind regards,
> >
> > Frank van Bortel
> > Technical consultant Oracle
> >
> >
>
> --
> Rick Wessman
> Server Security Group
> Oracle Corporation
> rwessman_at_us.oracle.com
>
> The opinions expressed above are mine and do not necessarily reflect
> those of Oracle Corporation.
Received on Thu Jan 06 2000 - 09:08:18 CST

Re: ORA-12638 Credential Retrieval Failed - newbie question