USE MASTER   
DECLARE @i INT   
SELECT   @i=1   
DECLARE @sSPID VARCHAR(100) 
DECLARE KILL_CUR SCROLL CURSOR FOR     
SELECT SPID FROM sysprocesses WHERE DBID=DB_ID(‘你要KILL连接的数据库名字‘)                            
OPEN KILL_CUR                   
IF @@CURSOR_ROWS=0 GOTO END_KILL_CUR   
FETCH FIRST FROM KILL_CUR INTO @sSPID               
EXEC(‘KILL   ‘+@sSPID)                 
WHILE @i<@@CURSOR_ROWS   
BEGIN       
    FETCH NEXT FROM KILL_CUR INTO @sSPID               
    EXEC(‘KILL ‘+@sSPID)   
    SELECT @i=@i+1   
END   
END_KILL_CUR:   
CLOSE KILL_CUR   
DEALLOCATE KILL_CUR