SQL Server 查看进程阻塞及处理

一、进程分析

--首先，查看进程，查看否存在阻塞进程，blocked>0都是当前被阻塞的进程 
SELECT * FROM sys.sysprocesses WHERE blocked >0 ORDER BY blocked;

--找到被阻塞的线程后，想要继续查看进程被谁阻塞,分析导致阻塞的源头
SELECT * FROM sys.sysprocesses WHERE spid =@spid --这是你要分析的进程ID

--查看此进程执行的SQL 语句
DBCC inputbuffer(@spid);

--如果想要结束当前进程，KILL 掉当前导致阻塞的SQL
KILL @spid

二、分析死锁还是阻塞

USE master;
GO
DECLARE @spid INT,@bl INT;
DECLARE s_cur CURSOR FOR
    SELECT 0,blocked FROM sys.sysprocesses a
        WHERE blocked > 0 
        AND NOT EXISTS( SELECT 1 FROM sys.sysprocesses b WHERE b.blocked > 0 AND a.blocked = b.spid)
    UNION
    SELECT spid,blocked FROM sys.sysprocesses WHERE blocked > 0;
OPEN s_cur;
FETCH NEXT FROM s_cur
INTO @spid,
     @bl;
WHILE @@FETCH_STATUS = 0
BEGIN
    IF @spid = 0
        SELECT '进程号SPID:[' + CAST(@bl AS VARCHAR(10)) + ']引起死锁,其执行的SQL语法如下';
    ELSE
        SELECT '进程号SPID：[' + CAST(@spid AS VARCHAR(10)) + ']被' + ' 进程号SPID：['  + CAST(@bl AS VARCHAR(10)) + ']阻塞,其当前进程执行的SQL语法如下';
    DBCC INPUTBUFFER(@bl);
    FETCH NEXT FROM s_cur INTO @spid,@bl;
END;
CLOSE s_cur;
DEALLOCATE s_cur;