SQL Server查看事务锁

本文详细介绍了SQL Server中如何查看和理解事务锁的工作原理。通过查询系统动态视图,你可以获取关于当前数据库中锁定信息的深入洞察,包括锁定类型、资源和模式等。这对于诊断和解决并发问题至关重要。

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SELECT
       Blocked.Session_ID AS Blocked_Session_ID
       , Blocked_SQL.text AS Blocked_SQL
       , waits.wait_type AS Blocked_Resource
       , Blocking.Session_ID AS Blocking_Session_ID
       , Blocking_SQL.text AS Blocking_SQL
        , GETDATE()
FROM sys.dm_exec_connections AS Blocking INNER JOIN sys.dm_exec_requests AS Blocked
       ON Blocked.Blocking_Session_ID = Blocking.Session_ID
CROSS APPLY
       (
         SELECT * FROM sys.dm_exec_sql_text(Blocking.most_recent_sql_handle)
       ) AS Blocking_SQL
CROSS APPLY
       (
         SELECT * FROM sys.dm_exec_sql_text(Blocked.sql_handle)
       ) AS Blocked_SQL
INNER JOIN sys.dm_os_waiting_tasks AS waits 
       ON waits.Session_ID = Blocked.Session_ID
 
 
-- What SQL Statements Are Currently Running?

SELECT 'Duration(secs)' = datediff(ss,start_time, getdate()) 
, [Spid] = session_Id
, ecid
, [Database] = DB_NAME(sp.dbid)
, [User] = nt_username
, 
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