FIX: You cannot set a SQL Server 2012 or 2014 database to single-user mode if the database is read-only

Microsoft distributes Microsoft SQL Server 2012 fixes as one downloadable file. Because the fixes are cumulative, each new release contains all the hotfixes and all the security fixes that were included with the previous SQL Server 2012 fix release.
Assume that you set a Microsoft SQL Server 2012 or SQL Server 2014 database to read-only mode. When you then try to set it to single-user mode, you may receive the following error message:

Msg 3906, Level 16, State 1, Line 51 Failed to update database "SDP" because the database is read-only.

Msg 5069, Level 16, State 1, Line 51 ALTER DATABASE statement failed.

Cumulative Update information

This issue was first fixed in the following cumulative update of SQL Server.
Recommendation: Install the latest cumulative update for SQL Server

Each new cumulative update for SQL Server contains all the hotfixes and all the security fixes that were included with the previous cumulative update. Check out the latest cumulative updates for SQL Server:
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.
Learn about the terminology that Microsoft uses to describe software updates.
Note This is a "FAST PUBLISH" article created directly from within the Microsoft support organization. The information contained herein is provided as-is in response to emerging issues. As a result of the speed in making it available, the materials may include typographical errors and may be revised at any time without notice. See Terms of Use for other considerations.

Article ID: 3069154 - Last Review: 08/17/2015 19:08:00 - Revision: 3.0

Microsoft SQL Server 2012 Analysis Services, Microsoft SQL Server 2012 Business Intelligence, Microsoft SQL Server 2012 Developer, Microsoft SQL Server 2012 Enterprise, Microsoft SQL Server 2012 Express, Microsoft SQL Server 2012 Standard, Microsoft SQL Server 2014 Service Pack 1

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