Cannot drop database because it is currently in use

I want to drop a database. I have used the following code, but to no avail.

public void DropDataBase(string DBName,SqlConnection scon) { try { SqlConnection.ClearAllPools(); SqlCommand cmd = new SqlCommand("ALTER DATABASE " + DBName + " SET SINGLE_USER WITH ROLLBACK IMMEDIATE", scon); cmd.CommandType = CommandType.Text; scon.Open(); cmd.ExecuteNonQuery(); scon.Close(); SqlCommand cmddrpdb = new SqlCommand("drop database " + DBName + "", scon); cmddrpdb.CommandType = CommandType.Text; scon.Open(); cmddrpdb.ExecuteNonQuery(); scon.Close(); } catch (Exception ex) { MessageBox.Show("DropDataBase : " +ex.Message); } } 

I am getting Error as cannot drop database because it is currently in use. Please help me out in the above mentioned issue.

18 Answers

Before dropping a database, you will need to drop all the connections to the target database first.

I have found a solution at http://www.kodyaz.com/articles/kill-all-processes-of-a-database.aspx

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

It's too late, but it may be useful for future users.

You can use the below query before dropping the database query:

 use master go alter database [MyDatbase] set single_user with rollback immediate drop database [MyDatabase] 

It will work. You can also refer to

How do I specify "close existing connections" in sql script

I hope it will help you :)

Someone connected to the database. Try to switch to another database and then, to drop it:

Try

SP_WHO to see who connected

and KILL if needed

For SQL server mgmt. studio:

Right click database: Properties -> Options -> Restrict Access : Set to "Single User" and perform the drop afterwards

In SQL Server Management Studio 2016, perform the following:

• Right click on database

• Click delete

• Check close existing connections

• Perform delete operation

select * from sys.sysprocesses where dbid = DB_ID('Test') 

(Replace 'Test' with the name of the database you are trying to drop) This will tell you which processes are using it.

If you still want to force drop then, the ultimate approach is:

USE master; GO ALTER DATABASE Test SET SINGLE_USER WITH ROLLBACK IMMEDIATE; GO DROP DATABASE Test; 

Hope this helps !

If your dropping the database in SQL Management Studio and you get the message, don't forget that you use Master as selected database otherwise your query is also an connection to the database.

USE Master; GO DROP DATABASE AdventureWorks; GO 

First make your data base offline after that detach it e.g.

Use Master GO ALTER DATABASE dbname SET OFFLINE GO EXEC sp_detach_db 'dbname', 'true' 

First check the connected databases

SP_WHO 

Second Disconnect your database

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

FINALLY DROP IT

drop database your_database 

A brute force workaround could be:

I wanted to call out that I used a script that is derived from two of the answers below.

Props to @Hitesh Mistry and @unruledboy

DECLARE @DatabaseName nvarchar(50) SET @DatabaseName = N'[[[DatabaseName]]]' DECLARE @SQL varchar(max) SELECT @SQL = COALESCE(@SQL,'') + 'Kill ' + Convert(varchar, SPId) + ';' FROM MASTER..SysProcesses WHERE DBId = DB_ID(@DatabaseName) AND SPId <> @@SPId EXEC(@SQL) alter database [[[DatabaseName]]] set single_user with rollback immediate DROP DATABASE [[[DatabaseName]]] 

Using MS SQL Server 2008, in DELETE dialog with Close connection options, this is the generated script, I guess it is the best:

EXEC msdb.dbo.sp_delete_database_backuphistory @database_name = N'YOUR_DATABASE_NAME' GO USE [master] GO ALTER DATABASE [YOUR_DATABASE_NAME] SET SINGLE_USER WITH ROLLBACK IMMEDIATE GO USE [master] GO /****** Object: Database [YOUR_DATABASE_NAME] Script Date: 01/08/2014 21:36:29 ******/ DROP DATABASE [YOUR_DATABASE_NAME] GO 

Just wanted to give a vb.net (as with c language if want to convert..) I was having similar problem for uninstal of one of my programs, dropping the DB was bit tricky, yes could get users to go into server drop it using Express, but thats not clean, after few looks around got a perfect little bit of code together...

 Sub DropMyDatabase() Dim Your_DB_To_Drop_Name As String = "YourDB" Dim Your_Connection_String_Here As String = "SERVER=MyServer;Integrated Security=True" Dim Conn As SqlConnection = New SqlConnection(Your_Connection_String_Here) Dim AlterStr As String = "ALTER DATABASE " & Your_DB_To_Drop_Name & " SET OFFLINE WITH ROLLBACK IMMEDIATE" Dim AlterCmd = New SqlCommand(AlterStr, Conn) Dim DropStr As String = "DROP DATABASE " & Your_DB_To_Drop_Name Dim DropCmd = New SqlCommand(DropStr, Conn) Try Conn.Open() AlterCmd.ExecuteNonQuery() DropCmd.ExecuteNonQuery() Conn.Close() Catch ex As Exception If (Conn.State = ConnectionState.Open) Then Conn.Close() End If MsgBox("Failed... Sorry!" & vbCrLf & vbCrLf & ex.Message) End Try End Sub 

Hope this helps anyone looking xChickenx

UPDATE Using this converter here is the C# version :

public void DropMyDatabase() { var Your_DB_To_Drop_Name = "YourDB"; var Your_Connection_String_Here = "SERVER=MyServer;Integrated Security=True"; var Conn = new SqlConnection(Your_Connection_String_Here); var AlterStr = "ALTER DATABASE " + Your_DB_To_Drop_Name + " SET OFFLINE WITH ROLLBACK IMMEDIATE"; var AlterCmd = new SqlCommand(AlterStr, Conn); var DropStr = "DROP DATABASE " + Your_DB_To_Drop_Name; var DropCmd = new SqlCommand(DropStr, Conn); try { Conn.Open(); AlterCmd.ExecuteNonQuery(); DropCmd.ExecuteNonQuery(); Conn.Close(); } catch(Exception ex) { if((Conn.State == ConnectionState.Open)) { Conn.Close(); } Trace.WriteLine("Failed... Sorry!" + Environment.NewLine + ex.Message); } } 

To delete a database even if it's running, you can use this batch file

@echo off set /p dbName= "Enter your database name to drop: " echo Setting to single-user mode sqlcmd -Q "ALTER DATABASE [%dbName%] SET SINGLE_USER WITH ROLLBACK IMMEDIATE" echo Dropping... sqlcmd -Q "drop database %dbName%" echo Completed. pause 

You cannot drop a database currently being used however you can use sp_detach_db stored procedure if you want to remove a database from the server without deleting the database files.

just renaming the DB (to be delete) did the trick for me. it got off the hold of whatever process was accessing the database, and so I was able to drop the database.

Go to available databases section and select master. Then Try DROP DATABASE the_DB_name.

Use this:

/* Delete Database Backup and Restore History from MSDB System Database */ EXEC msdb.dbo.sp_delete_database_backuphistory @database_name = N'[dba]' GO /* Query to Get Exclusive Access of SQL Server Database before Dropping the Database */ USE [master] GO ALTER DATABASE [dba] SET SINGLE_USER WITH ROLLBACK IMMEDIATE GO /* Query to Drop Database in SQL Server */ DROP DATABASE [dba] GO 

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