zoukankan      html  css  js  c++  java
  • 查询高消耗的sql语句

    查询高消耗的sql语句

    高消耗IO:

    SELECT TOP 10
    [Average IO] = (total_logical_reads + total_logical_writes) / qs.execution_count
    ,[Total IO] = (total_logical_reads + total_logical_writes)
    ,[Execution count] = qs.execution_count
    ,[Individual Query] = SUBSTRING (qt.text,qs.statement_start_offset/2,
             (CASE WHEN qs.statement_end_offset = -1
                THEN LEN(CONVERT(NVARCHAR(MAX), qt.text)) * 2
              ELSE qs.statement_end_offset END - qs.statement_start_offset)/2)
            ,[Parent Query] = qt.text
    ,DatabaseName = DB_NAME(qt.dbid)
    FROM sys.dm_exec_query_stats qs
    CROSS APPLY sys.dm_exec_sql_text(qs.sql_handle) as qt
    ORDER BY [Average IO] DESC;

    高消耗CPU:

    SELECT TOP 10
    [Average CPU used] = total_worker_time / qs.execution_count
    ,[Total CPU used] = total_worker_time
    ,[Execution count] = qs.execution_count
    ,[Individual Query] = SUBSTRING (qt.text,qs.statement_start_offset/2,
             (CASE WHEN qs.statement_end_offset = -1
                THEN LEN(CONVERT(NVARCHAR(MAX), qt.text)) * 2
              ELSE qs.statement_end_offset END -
    qs.statement_start_offset)/2)
    ,[Parent Query] = qt.text
    ,DatabaseName = DB_NAME(qt.dbid)
    FROM sys.dm_exec_query_stats qs
    CROSS APPLY sys.dm_exec_sql_text(qs.sql_handle) as qt
    ORDER BY [Average CPU used] DESC;

  • 相关阅读:
    Linux 命令
    oracle sqlplus链接和sid
    sql 应用记录
    数据库接口基础类 oracle,sql server
    oracle 触发器
    js json -> <-object
    Docker学习总结(三)--常用命令
    MySQL之binlog日志
    Redis学习总结(九)-- Redis常用技巧
    Redis学习总结(八)--Redis云平台
  • 原文地址:https://www.cnblogs.com/huige1004/p/1355186.html
Copyright © 2011-2022 走看看