SQL SERVER 查看死锁和阻塞的SQL语句

--查看死锁
SELECT
    t1.resource_type [资源锁定类型],
    DB_NAME(resource_database_id) AS 数据库名,
    t1.resource_associated_entity_id 锁定对象,
    t1.request_mode AS 等待者请求的锁定模式,
    t1.request_session_id 等待者SID,
    t2.wait_duration_ms 等待时间,
    (
        SELECT
            TEXT
        FROM
            sys.dm_exec_requests r CROSS apply sys.dm_exec_sql_text (r.sql_handle)
        WHERE
            r.session_id = t1.request_session_id
    ) AS 等待者要执行的SQL,
    t2.blocking_session_id [锁定者SID],
    (
        SELECT
            TEXT
        FROM
            sys.sysprocesses p CROSS apply sys.dm_exec_sql_text (p.sql_handle)
        WHERE
            p.spid = t2.blocking_session_id
    ) 锁定者执行语句
FROM
    sys.dm_tran_locks t1,
    sys.dm_os_waiting_tasks t2
WHERE
    t1.lock_owner_address = t2.resource_address
 
 order by t2.wait_duration_ms desc

 
--查看正在阻塞的SQL
SELECT TOP 20 
  [session_id], 
  [request_id], 
  [start_time] AS '开始时间', 
  [status] AS '状态', 
  [command] AS '命令', 
  dest.[text] AS 'sql语句',  
  DB_NAME([database_id]) AS '数据库名', 
  [blocking_session_id] AS '正在阻塞其他会话的会话ID', 
  [wait_type] AS '等待资源类型', 
  [wait_time] AS '等待时间', 
  [wait_resource] AS '等待的资源', 
  [reads] AS '物理读次数', 
  [writes] AS '写次数', 
  [logical_reads] AS '逻辑读次数', 
  [row_count] AS '返回结果行数' 
 FROM sys.[dm_exec_requests] AS der  CROSS APPLY  sys.[dm_exec_sql_text](der.[sql_handle]) AS dest  
 WHERE [session_id]>50 AND DB_NAME(der.[database_id])='SeedLandContractDB'   
 ORDER BY [cpu_time] DESC