PRB: Oracle TNS: Authentication Service Initialization Error (178391)
The information in this article applies to:
- Microsoft ODBC for Oracle version 2.0 Build 2.73.7269
- Microsoft ODBC for Oracle version 2.0 Build 2.73.7283.03
- Microsoft ODBC for Oracle version 2.0 Build 2.73.7356
- Microsoft ODBC for Oracle version 2.5 Build 2.573.2927
- Microsoft Data Access Components 2.0
- Microsoft Data Access Components 2.1
- Microsoft Data Access Components 2.5
- Microsoft Data Access Components 2.6
This article was previously published under Q178391 SYMPTOMS
Oracle databases authenticate users that are logged on with SQL*Net
Authentication services. This service works fine for users logged into
Oracle through SQLPlus; however, when the logged on user is a service like
Internet Information Server, the authentication fails with the following
error:
[Microsoft][ODBC driver for Oracle][Oracle]ORA-12641: TNS:authentication
service failed to initialize
CAUSE
This is a known limitation of SQL*Net Authentication.
RESOLUTION
The problem may be corrected by editing the Sqlnet.ora file. This
configuration file is usually stored in the Network/Admin subdirectory of
the Oracle Home directory. The following line needs to be added to this
file:
SQLNET.AUTHENTICATION_SERVICES = (none)
STATUS
Microsoft is researching this problem and will post new information here in
the Microsoft Knowledge Base as it becomes available.
| Modification Type: | Major | Last Reviewed: | 12/3/2003 |
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| Keywords: | kb3rdparty kbDatabase kbDriver kbOracle kbprb KB178391 |
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