SqlServer并发事务：死锁跟踪（三）3种跟踪死锁的方法总结

方法一：打开profiler跟踪事件 locks: deadlock graph

方法二：打开1222或者1204标志记录死锁,在sqlserver日志查看

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DBCC TRACEON(1222,-1)  
DBCC TRACEON(1204,-1)

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如果日志太多就不好找了，这时可以用系统扩展存储过程筛选！


--查看是否死锁，确定死锁的的时间
exec xp_readerrorlog 0,1,'DeadLock',NULL,'2015-01-01','2015-01-10','DESC'

--按时间查看sqlserver日志，即为死锁信息
exec xp_readerrorlog 0,1,NULL,NULL,'2015-01-07 22:13:10.300','2015-01-07 22:13:10.330','DESC'

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方法三：系统扩展事件会话system_health自动记录

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--扩展事件会话的信息
select * from sys.dm_xe_sessions where name = 'system_health'


SELECT 
	xed.value('@timestamp','datetime')as Creation_Date,  
	xed.query('.')AS Extend_Event  
FROM 
(  
	SELECT CAST([target_data] AS XML)AS Target_Data  
	FROM sys.dm_xe_session_targets AS xt  
	INNER JOIN sys.dm_xe_sessions AS xs  
	ON xs.address= xt.event_session_address  
	WHERE xs.name=N'system_health'  
	AND xt.target_name=N'ring_buffer'
) AS XML_Data  
CROSS APPLY Target_Data.nodes('RingBufferTarget/event[@name="xml_deadlock_report"]')AS XEventData(xed)  
ORDER BY Creation_Date DESC

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