E parameter is here for trusted connection and -S is for server nameĪfter you are able to connect, run the restore command. SQLCMD –S hostanme\instance_name - E-for named instance Now go ahead and launch new Command prompt as admin and login as below This will cause SQL Server to start in single user mode. Sqlservr -m -s instance_name-for named instance Now open new command prompt(as administrator) go to Binn folder and run If you have named instance it would be.Īfter above is done check SQL Server services are stopped.
First stop SQL Server agent and then open command prompt with admin privileges.
To simply start SQL Server in single user mode. As a fact you cannot bring master database in single user mode you would get error what you have pasted in the question. To restore master database SQL Server must be brought in single user mode, not the master database. It seems all operations above didn't really turn the SQL Server in single user mode for me.ĭon't know which part I am doing wrong or what should I do next. Unfortunately, this also threw the first error message. Then connect it by sqlcmd and send my restore by it, like sqlcmd -S localhostĪnd execute the restore cmd in dos command window. My last attempt was to launch SQL Server service by net start MSSQLSERVER /m I still got the first error message while I was trying to restore master by RESTORE DATABASE master FROM DISK='C:\.\master.bak' WITH REPLACE So I searched a bit and found an instruction from Microsoftīut after I added the startup parameter with -m and restarted the MSSQL Service. : Option 'SINGLE_USER' cannot be set inĭatabase 'master'. I thought it would be simple however I have tried three different approach to meet the requirement but none of them worked.įirst I used SSMS, right click on master DB > Tasks > Restore > Database.Īnd check Close existing connections to destination database after selecting the backup. "How to: Start an Instance of SQL Server (sqlservr.exe)" in Books For information on starting in single-user mode, see To restore the master database, the server must be running in I am trying to restore master DB from a backup and getting below error:
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