1,查看CPU占用量最高的会话及SQL语句 select spid,cmd,cpu,physical_io,memusage, (select top 1 [text] from ::fn_get_sql(sql_handle)) sql_text from master..sysprocesses order by cpu desc,physical_io desc 2,查看缓存重用次数少,内存占用大的SQL语句 SELECT TOP 100 usecounts, objtype,
SQLServer 查询数据死锁语句 我们可以通过以下SQL 语句用来查询,当前数据中存在的死锁语句,定位数据库出现死锁的根本原因. --每秒死锁数量 SELECT * FROM sys.dm_os_performance_counters WHERE counter_name LIKE 'Number of Deadlocksc%'; --查询当前阻塞 WITH CTE_SID ( BSID, SID, sql_handle ) AS ( SELECT blocking_session
qs.total_worker_time/qs.execution_count as [Avg CPU Time], , ( ) as query_text, qt.dbid, dbname=db_name(qt.dbid), qt.objectid FROM sys.dm_exec_query_stats qs cross apply sys.dm_exec_sql_text(qs.sql_handle) as qt ORDER BY [Avg CPU Time] DESC
原文:sqlserver查询所有表的行数的sql语句 select object_name(id),rowcnt from sysindexes where indid<2 and objectproperty(id,'ismsshipped')=0 order by rowcnt desc select a.name, b.rows from sysobjects a inner join sysindexes b on a.id = b.id where a.type = 'u' and b
最近在学mongoDB,安装倒没什么困难,有yum仓库.不过接入ctl后的一条warning倒挺让人烦心的. 1 2 2015-03-22T09:27:00.222+0800 I CONTROL [initandlisten] ** WARNING: /sys/kernel/mm/transparent_hugepage/defrag is 'always'. 2015-03-22T09:27:00.222+0800 I CONTROL [initandlisten] ** W