SELECT*FROM sys.sysprocesses where spid>50 and blocked>0 --可以查看阻塞         SELECT SPID=p.spid, DBName =convert(CHAR(20),d.name),  ProgramName =program_name, LoginName =convert(CHAR(20),l.name), HostName =convert(CHAR(20),hostname), Status= p.status, BlockedBy = p.blocked,LoginTime = login_time, QUERY =CAST(TEXT AS VARCHAR(MAX))   FROM MASTER.dbo.sysprocesses p    INNER JOIN MASTER.dbo.sysdatabases d  ON p.dbid= d.dbid      INNER JOIN MASTER.dbo.syslogins l  ON p.sid= l.sid       CROSS APPLY sys.dm_exec_sql_text(sql_handle) WHERE  p.blocked = 0        AND EXISTS(SELECT 1   FROM MASTER..sysprocesses p1  WHERE  p1.blocked = p.spid)  --可以查看阻塞的具体语句