SQL SERVER 占用资源高的SQL语句
原创曹振华 最后发布于2019-12-03 19:45:05 阅读数 16 收藏
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--SQL SERVER 占用资源高的SQL语句：
--查询占用cpu高的前 50 个 SQL 语句
SELECT total_cpu_time,[total_physical_Reads], total_execution_count, number_of_statements, s2.text
--(SELECT SUBSTRING(s2.text, statement_start_offset / 2, ((CASE WHEN statement_end_offset = -1 THEN (LEN(CONVERT(NVARCHAR(MAX), s2.text)) * 2) ELSE statement_end_offset END) - statement_start_offset) / 2) ) AS query_text
FROM
(SELECT TOP 50
SUM(qs.total_worker_time) AS total_cpu_time,
SUM(total_physical_reads) AS [total_physical_Reads],
SUM(qs.execution_count) AS total_execution_count,
COUNT(*) AS number_of_statements,
qs.sql_handle --,
--MIN(statement_start_offset) AS statement_start_offset,
--MAX(statement_end_offset) AS statement_end_offset
FROM
sys.dm_exec_query_stats AS qs
GROUP BY qs.sql_handle
ORDER BY SUM(qs.total_worker_time) DESC) AS stats
CROSS APPLY sys.dm_exec_sql_text(stats.sql_handle) AS s2
--------------------------------------------------------------------
--查询物理IO高的前 50 个 SQL 语句
SELECT total_cpu_time, total_physical_Reads , total_execution_count, number_of_statements, s2.text
--(SELECT SUBSTRING(s2.text, statement_start_offset / 2, ((CASE WHEN statement_end_offset = -1 THEN (LEN(CONVERT(NVARCHAR(MAX), s2.text)) * 2) ELSE statement_end_offset END) - statement_start_offset) / 2) ) AS query_text
FROM
(SELECT TOP 50
SUM(qs.total_worker_time) AS total_cpu_time,
SUM(total_physical_reads) AS [total_physical_Reads],
SUM(qs.execution_count) AS total_execution_count,
COUNT(*) AS number_of_statements,
qs.sql_handle --,
--MIN(statement_start_offset) AS statement_start_offset,
--MAX(statement_end_offset) AS statement_end_offset
FROM
sys.dm_exec_query_stats AS qs
GROUP BY qs.sql_handle
ORDER BY SUM(qs.total_physical_Reads) DESC) AS stats
CROSS APPLY sys.dm_exec_sql_text(stats.sql_handle) AS s2
--------------------------------------------------------------------
--查看实时数据库占用资源
SELECT st.text, qp.query_plan, rq.*
FROM sys.dm_exec_requests RQ CROSS APPLY sys.dm_exec_sql_text(rq.sql_handle) as st
CROSS APPLY sys.dm_exec_query_plan(rq.plan_handle) as qp order by RQ.CPU_time desc
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版权声明：本文为CSDN博主「曹振华」的原创文章，遵循 CC 4.0 BY-SA 版权协议，转载请附上原文出处链接及本声明。
原文链接：https://blog.csdn.net/chadcao/article/details/103375316