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Home 2016 December SQL Server: Kill your running Sessions or Change Database Mode (Multi_User to Single_User)

SQL Server: Kill your running Sessions or Change Database Mode (Multi_User to Single_User)

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In this post, I am sharing scripts to kill all your running processes or sessions of SQL Server.

DBA always set time of database maintenance activities, but sometimes they find few running sessions so they require closing all connections of a SQL Server Database.

Before executing this script, please take care and verify all running connections and processes otherwise this script will harm to your data.

You require this type of script very occasionally, but I am sharing here because this is also one of the important scripts for SQL DBA.

How to find running sessions or processes in SQL Server?

Script to find Running Process and Session in SQL Server

Command to Kill particular session_id:

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KILL 'session_id'

Script to kill multiple sessions:

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DECLARE @DatabaseName nvarchar(50)
SET @DatabaseName = 'dbrnd'
 
DECLARE @SQL varchar(max)
SET @SQL = ''
 
SELECT @SQL = @SQL + 'Kill ' + Convert(varchar, SPId) + ';'
FROM MASTER..SysProcesses
WHERE DBId = DB_ID(@DatabaseName) AND SPId <> @@SPId
 
EXEC(@SQL)

Change your database mode from multi-user to single-user:

Once you change the database mode from multi-user to single-user, SQL Server immediately stops all the connections of the database. No one can connect to that database.

The DBA can perform the maintenance activity and after that, they can again change the database mode from single-user to multi-user.

To set Single User:

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ALTER DATABASE [Database_Name] SET SINGLE_USER WITH ROLLBACK IMMEDIATE

To set Multi User:

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ALTER DATABASE [Database_Name] SET MULTI_USER WITH ROLLBACK IMMEDIATE

Dec 23, 2016Anvesh Patel
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Anvesh Patel
Anvesh Patel

Database Engineer

December 23, 2016 SQL ServerAnvesh Patel, block transaction, database, database mode, database research and development, dbrnd, kill, multi_user, process, rename database, Session, single_user, SQL Query, SQL Server, SQL Server Administrator, SQL Server Monitoring, SQL Server Performance Tunning, SQL Server Tips and Tricks, transaction, TSQL
About Me!

I'm Anvesh Patel, a Database Engineer certified by Oracle and IBM. I'm working as a Database Architect, Database Optimizer, Database Administrator, Database Developer. Providing the best articles and solutions for different problems in the best manner through my blogs is my passion. I have more than six years of experience with various RDBMS products like MSSQL Server, PostgreSQL, MySQL, Greenplum and currently learning and doing research on BIGData and NoSQL technology. -- Hyderabad, India.

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