Article ID: 262699 - View products that this article applies to.
This article was previously published under Q262699
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BUG #: 54404 (SQLBUG_70)
A user that is already logged into a database, which has the option "single user" set to ON, may fail with the following error when a query is run while other users are trying to open the database:
Msg 924 Database <database name> is already open and can only have one user at a time.
Here are two ways to work around the error:
Microsoft has confirmed this to be a problem in SQL Server 7.0. This problem has been corrected in U.S. Service Pack 3 for Microsoft SQL Server 7.0. For more information, click the following article number to view the article in the Microsoft Knowledge Base:
274799For more information, contact your primary support provider.
(https://support.microsoft.com/kb/274799/ )INF: How to Obtain Service Pack 3 for Microsoft SQL Server 7.0 and Microsoft Data Engine (MSDE) 1.0
The user that is already logged into the database may eventually be allowed to successfully run the query that encounters the 924 error message. However, if several users continually try to use the database, that user may not ever get the query to run successfully.