--选取了前10个最耗CPU时间的会话
SELECT TOP 10
[session_id],
[request_id],
[start_time] AS '开始时间',
[status] AS '状态',
[command] AS '命令',
dest.[text] AS 'sql语句',
DB_NAME([database_id]) AS '数据库名',
[blocking_session_id] AS '正在阻塞其他会话的会话ID',
[wait_type] AS '等待资源类型',
[wait_time] AS '等待时间',
[wait_resource] AS '等待的资源',
[reads] AS '物理读次数',
[writes] AS '写次数',
[logical_reads] AS '逻辑读次数',
[row_count] AS '返回结果行数'
FROM sys.[dm_exec_requests] AS der
CROSS APPLY
sys.[dm_exec_sql_text](der.[sql_handle]) AS dest
WHERE [session_id]>50 AND DB_NAME(der.[database_id])='gposdb'
ORDER BY [cpu_time] DESC
--在SSMS里选择以文本格式显示结果
SELECT TOP 10
dest.[text] AS 'sql语句'
FROM sys.[dm_exec_requests] AS der
CROSS APPLY
sys.[dm_exec_sql_text](der.[sql_handle]) AS dest
WHERE [session_id]>50
ORDER BY [cpu_time] DESC
--等待资源
SELECT TOP 10
[session_id],
[request_id],
[start_time] AS '开始时间',
[status] AS '状态',
[command] AS '命令',
dest.[text] AS 'sql语句',
DB_NAME([database_id]) AS '数据库名',
[blocking_session_id] AS '正在阻塞其他会话的会话ID',
der.[wait_type] AS '等待资源类型',
[wait_time] AS '等待时间',
[wait_resource] AS '等待的资源',
[dows].[waiting_tasks_count] AS '当前正在进行等待的任务数',
[reads] AS '物理读次数',
[writes] AS '写次数',
[logical_reads] AS '逻辑读次数',
[row_count] AS '返回结果行数'
FROM sys.[dm_exec_requests] AS der
INNER JOIN [sys].[dm_os_wait_stats] AS dows
ON der.[wait_type]=[dows].[wait_type]
CROSS APPLY
sys.[dm_exec_sql_text](der.[sql_handle]) AS dest
WHERE [session_id]>50
ORDER BY [cpu_time] DESC
--CPU占用率高的
SELECT TOP 10
total_worker_time/execution_count AS avg_cpu_cost, plan_handle,
execution_count,
(SELECT SUBSTRING(text, statement_start_offset/2 + 1,
(CASE WHEN statement_end_offset = -1
THEN LEN(CONVERT(nvarchar(max), text)) * 2
ELSE statement_end_offset
END - statement_start_offset)/2)
FROM sys.dm_exec_sql_text(sql_handle)) AS query_text
FROM sys.dm_exec_query_stats
ORDER BY [avg_cpu_cost] DESC
SELECT CASE when dbid =32767
then'Resource'
else DB_NAME(dbid) end[DB_NAME],
OBJECT_SCHEMA_NAME(objectid,dbid) AS[SCHEMA_NAME],
OBJECT_NAME(objectid,dbid)AS[OBJECT_NAME],
SUM(usecounts) AS[Use_Count],
SUM(total_elapsed_time) AS[total_elapsed_time],
SUM(total_elapsed_time) /SUM(usecounts) *1.0AS[avg_elapsed_time],
substring(convert(char(23),DATEADD(ms,sum(total_elapsed_time)/1000,0),121),12,23)
AS total_elapsed_time_ms,
dbid,
objectid
FROM sys.dm_exec_cached_plans cp
CROSS APPLY sys.dm_exec_sql_text(cp.plan_handle)
JOIN
(SELECT SUM(total_elapsed_time) AS[total_elapsed_time],
plan_handle
FROM sys.dm_exec_query_stats
GROUP BY plan_handle) qs
ON cp.plan_handle = qs.plan_handle
WHERE objtype ='Proc'
AND UPPER(
-- remove white space first
REPLACE(
REPLACE(
REPLACE(
REPLACE(
REPLACE(
REPLACE(
REPLACE(text,'',''),
'',''),
'',''),
'', ''),
'',''),
'',''),
'','')
)
LIKE'%CREATE PROC%'
GROUP BY dbid, objectid
ORDER BY SUM(total_elapsed_time) /SUM(usecounts) *1.0 DESC;
