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Former Member
Nov 05, 2008 at 06:41 AM

Unable to connect to database error ORA-12638: Credential retrieval failed

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Dear All,

We are using SAP Ecc5 with oracle 9i on window 2003 and Solution Manager 3.2 SR1.

I am facing problem in taking backup through DB13 all the backup failed with on log details in solution manager . but the solution manager is up and running.

I try to connect to database it shows error.

Microsoft Windows [Version 5.2.3790]

(C) Copyright 1985-2003 Microsoft Corp.

C:\Documents and Settings\soladm.SAPSM>sqlplus

SQL*Plus: Release 9.2.0.7.0 - Production on Tue Nov 4 22:07:09 2008

Copyright (c) 1982, 2002, Oracle Corporation. All rights reserved.

Enter user-name: /as sysdba

ERROR:

*ORA-12638: Credential retrieval failed*

I have search for this problem and there is an solution

Please check the sqlnet.ora file. Change the following entry and try, this will work.

Original Entry - SQLNET.AUTHENTICATION_SERVICES= (NTS)

Modified Entry - SQLNET.AUTHENTICATION_SERVICES= (NONE)

I want to know it is ok to do there changes (offline or online) .

Please suggest, how to solved the problem.

The detail logs.

sqlnet.ora

  1. Filename......: sqlnet.ora

  2. Created.......: created by SAP AG, R/3 Rel. >= 6.10

  3. Name..........:

  4. Date..........:

  5. @(#) $Id: //bc/640-2/src/ins/SAPINST/impl/tpls/ora/ind/SQLNET.ORA#4 $

AUTOMATIC_IPC = ON

TRACE_LEVEL_CLIENT = OFF

NAMES.DEFAULT_DOMAIN = WORLD

NAME.DEFAULT_ZONE = WORLD

SQLNET.EXPIRE_TIME = 0

SQLNET.AUTHENTICATION_SERVICES = (NTS)

TCP.NODELAY=YES

Regards,

Shiva