終止SQL Server中的用戶進程方法

一、情景：在很多情況下，往往會要求數據庫管理員終止SQL Server中的用戶進程。本文將為大家介紹如何創建一個簡單的存儲過程來實現同時終止多個會話、結束連續的會話和結束連接到數據庫的所有會話等功能。

在很多情況下，往往會要求數據庫管理員終止SQL Server中的用戶進程，例如在停止某個數據庫的運作時，或者還原數據庫之前，或者長時間運行活動事務等情況下。數據庫管理員通常會使用SQL Server中提供的“KILL”命令來完成任務。

但是，SQL Server提供的“KILL”命令靈活性不夠，不能在一次性結束多個會話，一次只能解決掉一個會話。本文將為大家介紹如何創建一個簡單的存儲過程來實現同時終止多個會話、結束連續的會話和結束連接到數據庫的所有會話等功能。

首先，我們在主數據庫中創建“KILL2”這個進程，代碼如下所示(參考圖一):

USE [master]
GO
IF EXISTS (SELECT * FROM master.dbo.sysobjects
WHERE id = OBJECT_ID(N'[kill2]') AND type in (N'P', N'PC'))
DROP PROCEDURE [dbo].[kill2]
GO
--Usage1: Kill2 '51-57' --> Kills all the session IDs from 51 to 57
--Usage2: Kill2 '58' --> Kills the session IDs 58
--Usage3: Kill2 '51,56,100,58'
--> Kills the session IDs 51,56,100 and 58
--Usage4: Kill2 'DB=MyDatabase'
--> Kills all the session IDs that are connected
to the database "MyDatabase"

use master
go
set concat_null_yields_null off
go
create procedure kill2 @param2 varchar(500)
as
--declare @param2 varchar(500)
declare @param varchar(500)
declare @startcount int
declare @killcmd varchar(100)
declare @endcount int
declare @spid int
declare @spid2 int
declare @tempvar varchar(100)
declare @tempvar2 varchar(100)
--set @param2 ='54'
set @param=REPLACE(@param2,' ','')
if CHARINDEX('-',@param) <> 0
begin
select @startcount= convert(int,SUBSTRING(@param,1,charindex('-',@param)-1))
select @endcount=convert(int,SUBSTRING(@param,charindex('-',@param)+1,(LEN(@param)-charindex('-',@param))))
print 'Killing all SPIDs from ' + convert(varchar(100),@startcount)+' to ' +convert(varchar(100),@endcount)
while @startcount <=@endcount
begin
set @spid=(select spid from master.dbo.sysprocesses where spid=@startcount and spid>50)
if @spid = @startcount
begin
print 'Killing '+convert(varchar(100),@startcount)
set @killcmd ='Kill '+convert(varchar(100),@startcount)
exec(@killcmd)
end
else
begin
Print 'Cannot kill the SPID ' +convert(varchar(100),@startcount) + ' because it does not Exist'
end
set @startcount=@startcount + 1
end

end

if CHARINDEX(',',@param) <> 0
begin
set @tempvar =@param
while charindex(',',@tempvar ) <> 0
begin
SET @tempvar2=left(@tempvar,charindex(',',@tempvar)-1)
set @spid=(select spid from master.dbo.sysprocesses where spid=CONVERT(varchar(100),@tempvar2) and spid>50)
if @spid = CONVERT(varchar(100),@tempvar2)
begin
print 'Killing '+CONVERT(varchar(100),@tempvar2)
set @killcmd='Kill '+CONVERT(varchar(100),@tempvar2)
exec (@killcmd)

end
else
begin
Print 'Cannot kill the SPID ' +CONVERT(varchar(100),@tempvar2) + ' because it does not Exist'
end
set @tempvar =REPLACE(@tempvar,left(@tempvar,charindex(',',@tempvar)),'')
end
set @spid=(select spid from master.dbo.sysprocesses where spid=CONVERT(varchar(100),@tempvar) and spid>50)
if @spid = CONVERT(varchar(100),@tempvar)
begin
print 'Killing '+CONVERT(varchar(100),@tempvar)
set @killcmd='Kill '+CONVERT(varchar(100),@tempvar)
exec (@killcmd)

end
else
begin
Print 'Cannot kill the SPID ' +CONVERT(varchar(100),@tempvar) + ' because it does not Exist'
end
end

if CHARINDEX('=',@param2) <>0
begin
print 'Killing all the SPIDs that are connected to the database '+RIGHT(@param2,(len(@param2)-3))
declare dbcursor
cursor forward_only for select SPID from master.dbo.sysprocesses where DB_NAME(dbid) = RIGHT(@param2,(len(@param2)-3))
open dbcursor
fetch dbcursor into @spid
while @@FETCH_STATUS =0
begin
set @spid2=(select spid from master.dbo.sysprocesses where spid=@spid and spid>50)
if @spid = @spid2 begin
print 'Killing '+CONVERT(varchar(100),@spid2)
set @killcmd='Kill '+CONVERT(varchar(100),@spid2)
exec (@killcmd)

end
else
begin
Print 'Cannot kill the SPID ' +CONVERT(varchar(100),@spid2) + ' because it does not Exist'
end

fetch dbcursor into @spid
end
close dbcursor
deallocate dbcursor

end

if CHARINDEX('-',@param)=0 and CHARINDEX(',',@param) = 0 and CHARINDEX('=',@param)=0
begin
set @spid=(select spid from master.dbo.sysprocesses where spid=CONVERT(varchar(100),@param) and spid>50)
if @spid = CONVERT(varchar(100),@param)
begin
print 'Killing '+CONVERT(varchar(100),@param)
set @killcmd='Kill '+CONVERT(varchar(100),@param)
exec (@killcmd)

end
else
begin
Print 'Cannot kill the SPID ' +CONVERT(varchar(100),@param) + ' because it does not Exist'
end

end
go
--kill2 '51'
--go
--kill2 '51-56'
--go
--kill2 '56,57,58,52'
--go
--kill2 'db=AdventureWorks2008'
--kill2 'db=My Database'
--go
--sp_who