Наиболее часто встречающиеся слова в статье:
Статья:
-- создадим событие
IF EXISTS(SELECT * FROM sys.server_event_sessions WHERE name='LockCounts')
DROP EVENT session LockCounts ON SERVER
GO
DECLARE @dbid int
SELECT @dbid = db_id('DB_Light')
DECLARE @sql nvarchar(1024)
SET @sql = '
CREATE event session LockCounts ON SERVER
ADD EVENT sqlserver.lock_acquired (WHERE database_id =' + CAST(@dbid AS nvarchar) +')
ADD TARGET package0.histogram(
SET filtering_event_name=''sqlserver.lock_acquired'', source_type=0, source=''resource_0'')'
EXEC (@sql)
GO
ALTER EVENT session LockCounts ON SERVER
STATE=start
GO
--
-- Посмотрим таблицы с блокировками
use [DB_Light]
declare @tt table(lobject_id bigint, lock_count bigint)
;WITH lock (lobject_id, lock_count)
AS (
SELECT objstats.value('.','bigint') AS lobject_id,
objstats.value('@count', 'bigint') AS lock_count FROM (
SELECT CAST(xest.target_data AS XML)
LockData
FROM sys.dm_xe_session_targets xest
JOIN sys.dm_xe_sessions xes ON xes.address = xest.event_session_address
JOIN sys.server_event_sessions ses ON xes.name = ses.name
WHERE xest.target_name = 'histogram' AND xes.name = 'LockCounts'
) Locks
CROSS APPLY LockData.nodes('//HistogramTarget/Slot') AS T(objstats)
)
insert into @tt (lobject_id , lock_count)
select lobject_id , lock_count from lock;
select * from @tt LockedObjects
INNER JOIN sys.objects o
ON LockedObjects.lobject_id = o.object_id
WHERE o.type != 'S' AND o.type = 'U'
ORDER BY lock_count desc
--
-- Stop the event session.
--
ALTER EVENT SESSION LockCounts ON SERVER
state=stop
GO