Article ID: 903944 - View products that this article applies to.
Important This article contains information about how to modify the registry. Make sure to back up the registry before you modify it. Make sure that you know how to restore the registry if a problem occurs. For more information about how to back up, restore, and modify the registry, click the following article number to view the article in the Microsoft Knowledge Base:
(http://support.microsoft.com/kb/256986/ )Description of the Microsoft Windows registry
This article discusses the Microsoft Windows account that the Microsoft Distributed Transaction Coordinator (MSDTC) service must run under in Microsoft Windows Server 2003 and in Microsoft Windows XP.
Starting in Windows XP and then continuing in Windows Server 2003, the MSDTC service must run under the NT AUTHORITY\NetworkService Windows account.
If you change the account to an account other than the NetworkService account, the distributed transaction fails. The transaction fails because the MSDTC service cannot do mutual authentication together with other parties that are involved in the transaction. Local transactions that use the MSDTC service may also fail.
Note Other parties can be transaction managers, resource manager, or clients.
In both Microsoft Windows NT 4.0 and Microsoft Windows 2000, you can change the default MSDTC service account to a domain account. You may change the account to perform Windows authentication when you are performing an XA recovery operation on an XA database such as an Oracle database.
However, in both Windows Server 2003 and Windows XP, you cannot change the account. Instead, you must give the permissions and the roles that are required to perform an XA recovery operation to the NetworkService account on the computer where the MSDTC service is running.
The exact method of setting up an XA recovery operation is specific to each XA database. Typically, you have to add the computer account of the computer where the MSDTC service is running to the list of users who can perform an XA recovery operation on the XA database. Additionally, because the NetworkService account is a restricted account, you must provide the NetworkService account access to the folder where the XA DLL is located.
To change the account that the MSDTC service runs under back to the NetworkService account, follow these steps.
Warning Serious problems might occur if you modify the registry incorrectly by using Registry Editor or by using another method. These problems might require that you reinstall your operating system. Microsoft cannot guarantee that these problems can be solved. Modify the registry at your own risk.
For more information, click the following article number to view the article in the Microsoft Knowledge Base:
816633For more information about how to manage accounts and user rights for Microsoft Distributed Transaction Coordinator (MSDTC), visit the following Microsoft Developer Network (MSDN) Web site:
(http://support.microsoft.com/kb/816633/ )"The call to the GetXaSwitch function failed" error message with the Oracle 9.x client installed
http://msdn2.microsoft.com/en-us/library/ms682801.aspxThe third-party products that this article discusses are manufactured by companies that are independent of Microsoft. Microsoft makes no warranty, implied or otherwise, regarding the performance or reliability of these products.
Article ID: 903944 - Last Review: November 16, 2007 - Revision: 1.4
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