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Article ID: 286382 - Last Review: December 5, 2007 - Revision: 2.2
PRB: Errors When You Open ADO Connection in Transactional Components
This article was previously published under Q286382
IMPORTANT: This article contains information about modifying the registry. Before you
modify the registry, make sure to back it up and make sure that you understand how to restore
the registry if a problem occurs. For information about how to back up, restore, and edit the
registry, click the following article number to view the article in the Microsoft Knowledge Base:
256986Â
(http://kbalertz.com/Feedback.aspx?kbNumber=256986/EN-US/
)
Description of the Microsoft Windows Registry
When you open an ActiveX Data Objects (ADO) connection from a transactional component in COM+, Microsoft Transaction Server (MTS), or any transactional Active Server Pages (ASP) page, you may receive the following error message if you use Microsoft OLE DB provider for Oracle:
Cannot connect to the transaction manager or the transaction manager is unavailable
If you use Microsoft Open Database Connectivity (ODBC) driver for Oracle under the same circumstances, you may receive the following error message:
Note These error messages only occur when you open the ADO connection in transactional components. Non-transactional components work as expected.
WARNING: If you use Registry Editor incorrectly, you may cause serious problems that may
require you to reinstall your operating system. Microsoft cannot guarantee that you can solve
problems that result from using Registry Editor incorrectly. Use Registry Editor at your own
risk.
To resolve this problem, follow these steps:
- Verify that the registry keys that pertain to the Oracle client libraries are set properly.For additional information about how to set these registry keys, click the article number below
to view the article in the Microsoft Knowledge Base:
193893Â
(http://kbalertz.com/Feedback.aspx?kbNumber=193893/EN-US/
)
INFO: Using Oracle with Microsoft Transaction Server and COM+
- Verify that the user has full control to the following registry keys:
APPLIES TO
- Microsoft COM+ 1.0
- Microsoft COM+ 1.5
- Microsoft Transaction Services 2.0
- Microsoft Data Access Components 2.1 Service Pack 2
- Microsoft Data Access Components 2.1 Service Pack 2
- Microsoft Data Access Components 2.5
- Microsoft Data Access Components 2.5 Service Pack 1
- Microsoft Data Access Components 2.6
| kberrmsg kboracle kbprb KB286382 |
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