查询长事务和SQL执行等待间隔时间
通过SQL Profile跟踪SQL,并将跟踪的sql存入表中,运行下列语句就可以获取长事务的id,在EXCEL中通过TransactionID 筛选就可以得到事务的sql和运行时间。
select TransactionID [事务编号],
count(*) [SQL条数],
datediff(second, min(StartTime), max(EndTime)) [事务时间S]
from yy
where TransactionID is not null
group by TransactionID
order by 3
count(*) [SQL条数],
datediff(second, min(StartTime), max(EndTime)) [事务时间S]
from yy
where TransactionID is not null
group by TransactionID
order by 3
SQL执行等待间隔时间
SELECT t.TransactionID 事务ID,DATEDIFF(s,t.EndTime,t2.StartTime) [事务SQL间隔时间S],
t.StartTime,t.EndTime FROM
(SELECT TransactionID, DENSE_RANK() OVER (partition BY TransactionID ORDER BY eventsequence) rn,
StartTime,EndTime,TextData
FROM yy
WHERE TransactionID IS NOT NULL) t ,
(SELECT TransactionID, DENSE_RANK() OVER (partition BY TransactionID ORDER BY eventsequence) rn,
StartTime,EndTime,TextData
FROM yy
WHERE TransactionID IS NOT NULL) t2
WHERE t.TransactionID=t2.TransactionID AND t2.rn=t.rn+1
ORDER BY 2 desc
t.StartTime,t.EndTime FROM
(SELECT TransactionID, DENSE_RANK() OVER (partition BY TransactionID ORDER BY eventsequence) rn,
StartTime,EndTime,TextData
FROM yy
WHERE TransactionID IS NOT NULL) t ,
(SELECT TransactionID, DENSE_RANK() OVER (partition BY TransactionID ORDER BY eventsequence) rn,
StartTime,EndTime,TextData
FROM yy
WHERE TransactionID IS NOT NULL) t2
WHERE t.TransactionID=t2.TransactionID AND t2.rn=t.rn+1
ORDER BY 2 desc
分类:
SQL Server 性能分析
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