Re: ORA-12641: Authentication service failed to initalize

From: eric <>
Date: Tue, 11 Mar 2008 12:57:53 -0700 (PDT)
Message-ID: <>

On Mar 7, 3:07 pm, Frank van Bortel <> wrote:
> eric wrote:
> > i've already gone through the steps to obtain my ticket with ktpass,
> > and setup krb5.conf, krb.conf, and tnsnames.ora.
> > when i obtain my ticket (it appears to work -- no errors produced).
> > however, when i go to connect: sqlplus /@kb_oracle i get the following
> > error: ERROR: ORA-12641: Authentication service failed to initalize,
> > and get prompted to enter my password? anyone have any ideas??
> > thanks,
> > eric
> Check if you have the correct encryption mechanism; MS Windows 2000
> uses CRC by default, not MD5. MS Windows 2003 seems to use MD5
> by default, but better make sure. Oracle wants MD5.
> More options on, the "Kerberos errors"
> entry.
> If the encryption type is the cause, it should become visible
> when tracing.
> Just curious - why kerberos on Windows when OS authetication
> will work? Even AD for LDAP is supported on MS.
> --
> Regards,
> Frank van Bortel
> Top-posting in UseNet newsgroups is one way to shut me up

thanks. i'll have a look at that. here's what i was using for ktpass:

ktpass -princ oraclesrv/oracle11gtest.mydomain.com_at_MYDOMAIN.COM - DesOnly -crypto DES-CBC-CRC -ptype KRB5_NT_PRINCIPAL -mapuser -pass {my password omitted} -out C: \keytab.svcoracle

we wanted to test out something secure (i'm very light-skilled in dbastuff),  and our "team" wanted to use kerberos. i'll ask them why we're not using os authentication. do you have an article, or best practices to point me in the right direction? (i'd check out your website), but i'm at work -- and can't get to it.

eric Received on Tue Mar 11 2008 - 14:57:53 CDT

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