Locks & Waits – SQLpowered.com https://sqlpowered.com SQL Server + BI Wed, 09 Oct 2019 11:10:58 +0000 en-US hourly 1 https://sqlpowered.com/wp-content/uploads/2020/07/FavIcon-e1594067873682-99x100.png Locks & Waits – SQLpowered.com https://sqlpowered.com 32 32 Deadlock Chart from XE Ring Buffer https://sqlpowered.com/script/deadlock-chart-from-xe-ring-buffer/ Wed, 09 Oct 2019 11:10:18 +0000 https://sqlpowered.com/?post_type=script&p=3184 Simple script to obtain deadlock graph from default XE session system_health. Contains only deadlocks capture for certain period of time back (hours).

SELECT 
	[xe].[query]('(event/data/value/deadlock)[1]') [DeadlockGraph]
FROM ( SELECT [xe].[query]('.') [xe]
	   FROM ( SELECT CAST([target_data] AS XML) [td]
			  FROM [sys].[dm_xe_session_targets] [st]
				INNER JOIN [sys].[dm_xe_sessions] [s] ON [s].[address] = [st].[event_session_address]
			  WHERE [s].[NAME] = 'system_health' AND [st].[target_name] = 'ring_buffer'
        ) [Data]
		CROSS APPLY [td].[nodes]('RingBufferTarget/event[@name="xml_deadlock_report"]') AS [XEventData]([xe])
) [a]
GO
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