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@wsmelton
Created October 6, 2016 20:00
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Script to parse Deadlock information from System_Health XEvent session in SQL Server
;WITH xDeadlock (Contents)
AS
(
select CAST(XEventData.XEvent.value('(data/value)[1]', 'varchar(max)') as xml) as DeadlockGraph
FROM
(select CAST(target_data as xml) as TargetData
from sys.dm_xe_session_targets st
join sys.dm_xe_sessions s on s.address = st.event_session_address
where name = 'system_health') AS Data
CROSS APPLY TargetData.nodes ('RingBufferTarget/event[@name="xml_deadlock_report"]') AS XEventData (XEvent)
), Victims AS
(
SELECT ID = Victims.List.value('@id', 'varchar(50)')
FROM xDeadlock
CROSS APPLY xDeadlock.Contents.nodes('//deadlock/victim-list/victimProcess') AS Victims (List)
), Locks AS
(
SELECT --xDeadlock.DeadlockID,
MainLock.Process.value('@id', 'varchar(100)') AS LockID,
OwnerList.Owner.value('@id', 'varchar(200)') AS LockProcessId,
REPLACE(MainLock.Process.value('local-name(.)', 'varchar(100)'), 'lock', '') AS LockEvent,
MainLock.Process.value('@objectname', 'sysname') AS ObjectName,
OwnerList.Owner.value('@mode', 'varchar(10)') AS LockMode,
MainLock.Process.value('@dbid', 'INTEGER') AS Database_id,
MainLock.Process.value('@associatedObjectId', 'BIGINT') AS AssociatedObjectId,
MainLock.Process.value('@WaitType', 'varchar(100)') AS WaitType,
WaiterList.Owner.value('@id', 'varchar(200)') AS WaitProcessId,
WaiterList.Owner.value('@mode', 'varchar(10)') AS WaitMode
FROM xDeadlock
CROSS APPLY xDeadlock.Contents.nodes('//deadlock/resource-list') AS Locks (list)
CROSS APPLY Locks.List.nodes('*') AS MainLock (Process)
CROSS APPLY MainLock.Process.nodes('owner-list/owner') AS OwnerList (Owner)
CROSS APPLY MainLock.Process.nodes('waiter-list/waiter') AS WaiterList (Owner)
), Process AS
(
-- get the data from the process node
SELECT --xDeadlock.DeadlockID,
[Victim] = CONVERT(BIT, CASE WHEN Deadlock.Process.value('@id', 'varchar(50)') = ISNULL(Deadlock.Process.value('../../@victim', 'varchar(50)'), v.ID)
THEN 1
ELSE 0
END),
[LockMode] = Deadlock.Process.value('@lockMode', 'varchar(10)'), -- how is this different from in the resource-list section?
[ProcessID] = Process.ID, --Deadlock.Process.value('@id', 'varchar(50)'),
[KPID] = Deadlock.Process.value('@kpid', 'int'), -- kernel-process id / thread ID number
[SPID] = Deadlock.Process.value('@spid', 'int'), -- system process id (connection to sql)
[SBID] = Deadlock.Process.value('@sbid', 'int'), -- system batch id / request_id (a query that a SPID is running)
[ECID] = Deadlock.Process.value('@ecid', 'int'), -- execution context ID (a worker thread running part of a query)
[IsolationLevel] = Deadlock.Process.value('@isolationlevel', 'varchar(200)'),
[WaitResource] = Deadlock.Process.value('@waitresource', 'varchar(200)'),
[LogUsed] = Deadlock.Process.value('@logused', 'int'),
[ClientApp] = Deadlock.Process.value('@clientapp', 'varchar(100)'),
[HostName] = Deadlock.Process.value('@hostname', 'varchar(20)'),
[LoginName] = Deadlock.Process.value('@loginname', 'varchar(20)'),
[TransactionTime] = Deadlock.Process.value('@lasttranstarted', 'datetime'),
[BatchStarted] = Deadlock.Process.value('@lastbatchstarted', 'datetime'),
[BatchCompleted] = Deadlock.Process.value('@lastbatchcompleted', 'datetime'),
[InputBuffer] = Input.Buffer.query('.'),
xDeadlock.[Contents],
[QueryStatement] = Execution.Frame.value('.', 'varchar(max)'),
TranCount = Deadlock.Process.value('@trancount', 'int')
FROM xDeadlock
CROSS APPLY xDeadlock.Contents.nodes('//deadlock/process-list/process') AS Deadlock (Process)
CROSS APPLY (SELECT Deadlock.Process.value('@id', 'varchar(50)') ) AS Process (ID)
LEFT JOIN Victims v ON Process.ID = v.ID
CROSS APPLY Deadlock.Process.nodes('inputbuf') AS Input (Buffer)
CROSS APPLY Deadlock.Process.nodes('executionStack') AS Execution (Frame)
)
-- get the columns in the desired order
SELECT p.Victim,
p.LockMode,
LockedObject = NULLIF(l.ObjectName, ''),
l.database_id,
l.AssociatedObjectId,
LockProcess = p.ProcessID,
p.KPID,
p.SPID,
p.SBID,
p.ECID,
p.TranCount,
l.LockEvent,
LockedMode = l.LockMode,
l.WaitProcessID,
l.WaitMode,
p.WaitResource,
l.WaitType,
p.IsolationLevel,
p.LogUsed,
p.ClientApp,
p.HostName,
p.LoginName,
p.TransactionTime,
p.BatchStarted,
p.BatchCompleted,
p.InputBuffer
FROM
Locks l
JOIN Process p ON p.ProcessID = l.LockProcessID
--WHERE p.TransactionTime > '2013-10-01'
ORDER BY p.Victim DESC,
p.ProcessId;
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