There's nothing wrong with the connection, and nothing wrong with the login. In order to preserve the system information, maybe they tried to replace the physical files with those from a SQL 2000 server and hence, the database engine got confused (it tried to put the DB in single-user for recovery, but failed somewhere in the process). 1. I tried killing a SPID (sp_who2) that I thought had the lock but could not get access to the database and I could not bring the database to muti-user mode. For user databases, you have to make sure there are no active connections to the database you're restoring. In some situations, like restoring system database or during disaster recovery you may need to start SQL in single user mode. In SQL Server Configuration Manager, in the left pane, select SQL Server Services. For a SQL 2016 instance, a DB creation date of 2003 looks odd. Starting SQL Server single user mode using Command Prompt. Sometimes, it is not possible to change to emergency mode to single user mode because there are several active connections. In the right-pane, right-click the instance of SQL Server, and then click Properties. Hi, Suppose you had a database stuck in single user mode that is in a busy OLTP environment. We were able to get it out of single user mode (finally) but it kept going right back in. 3. To start SQL Server in multi-user mode, remove the added -m start parameter from properties of the SQL Server service and restart the SQL Server service. The database is in single-user mode, and a user is currently connected to … The system stored procedure sp_who can be used to detect the active connection in SQL Server: (See the step image) To kill sessions, you can use the kill command. Changes to the state or options of database 'MSDB' cannot be made at this time. These next few steps change SQL Server back to multi-user mode. I logged in through DAC. I logged on as sa, but I could not bring the database to muti-user mode. If you get to the point of seeing the single user mode error, you have to figure out what else is connecting to the instance, and prevent it for at least as long as it takes for you to establish … Try stopping SQL server agent and verify no other sessions connects to it-if any then see what it is doing & nothing is critical then . This T-SQL command will kill the session ID 59: KILL 59; GO 2. On the Startup Parameters tab, in the Existing parameters box, select -m and then click Remove. Still cannot make this work. First of all this is not normal to start SQL Server in single user mode. We can also start SQL Server single user mode using the Command Prompt. I'm using SQL Server 2005. :-/ – Joshua F. Rountree Sep 6 '16 at 13:04 The connection that originally put the database into single user mode is … – Vaccano Feb 2 '12 at 21:30 Given that: 1. 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