PRB: Error Messages When a Web Method that Requires a Transaction Accesses Oracle Database (320609)
The information in this article applies to:
- Microsoft Web Services (included with the .NET Framework) 1.0
This article was previously published under Q320609 SYMPTOMS If a Web method of a Web service is marked to require a
transaction, and the Web method accesses Oracle, you may receive the following
error messages: Oracle client and networking components
were not found. These components are supplied by Oracle Corporation and are
part of the Oracle Version 7.3.3 or later client software installation.
Provider is unable to function until these components are installed.
-or- XACT_E_TMNOTAVAILABLE(0x8004D01B)
CAUSE When the Microsoft Oracle OLE DB Provider enlists in a
transaction, the provider must access the following registry keys: HKLM\SOFTWARE\Microsoft\MSDTC\MTxOCI on Windows 2000 or Windows XP
HKLM\SOFTWARE\Microsoft\Transaction Server\Local Computer\My Computer on Windows NT 4.0 The Web service is running as a user who does not
have access to these registry keys, and therefore does not have enough
permissions to access the directory in which Oracle is installed.
RESOLUTION To resolve the issue, make sure that the Web service is
running as a user who has FULL PERMISSIONS to access these registry keys and to
access the directory in which Oracle is installed. By default, the Web service
runs as the ASP.NET user. MORE INFORMATION A similar error may occur if a serviced component runs in a
COM+ library application that is called from an ASP.NET page or a Web service.
REFERENCESFor additional information, click the
article numbers below to view the articles in the Microsoft Knowledge Base: 306158 INFO: Implementing Impersonation in an ASP.NET Application
269344 BUG: Microsoft Oracle ODBC Driver and OLE DB Provider Report 'Driver Not Capable'
| Modification Type: | Minor | Last Reviewed: | 4/8/2003 |
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| Keywords: | kbDatabase kbOracle kbprb KB320609 kbAudDeveloper |
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