总耗CPU最多的前20个SQL total_worker_time AS [总消耗CPU 时间(ms)],execution_count [运行次数], qs.total_worker_time AS [平均消耗CPU 时间(ms)], last_execution_time AS [最大执行时间(ms)], , ( THEN DATALENGTH(qt.text) ) AS [使用CPU的语法], qt.text [完整语法], qt.dbid, dbname=db_name(qt.dbid)
--总耗CPU最多的前个SQL SELECT TOP 20 total_worker_time/1000 AS [总消耗CPU 时间(ms)],execution_count [运行次数], qs.total_worker_time/qs.execution_count/1000 AS [平均消耗CPU 时间(ms)], last_execution_time AS [最后一次执行时间],max_worker_time /1000 AS [最大执行时间(ms)], SUBSTRING(qt.te
在linux 系统中 用top命令查出CPU最高的SPID,再将SPID给存储过程,可以查出该进程的SQLTEXT create or replace procedure pro_get_sqltext(pin_spid in varchar2, pout_sqltext out varchar2, pout_sqltests out clob, pout_sql_kill_sid out varchar2) is v_spid number := 0; v_sid number := 0; v
1. 先通过top命令查看产用资源较多的spid号 2.查询当前耗时的会话ID,用户名,sqlID等: select sid,serial#,machine,username,program,sql_hash_value,sql_id, to_char(logon_time,'yyyy/mm/dd hh24:mi:ss') as login_time from v$session where paddr in (select addr from v$process where sp
--CPU相关视图 SELECT * FROM sys.dm_os_sys_info SELECT * FROM sys.dm_exec_sessions SELECT * FROM sys.sysprocesses SELECT * FROM sys.dm_os_tasks SELECT * FROM sys.dm_os_workers SELECT * FROM sys.dm_os_threads SELECT * FROM sys.dm_os_schedulers SELECT * FRO
在这里总结一下查找Linux.Java环境下最耗CPU性能的代码段的方法.基本上原理就是使用top命令查看最耗cpu的进程和线程(子进程).使用jstack把java线程堆栈给dump下来.然后,在堆栈信息中查找出对应的代码块.具体操作如下: 一.查找最耗cpu的进程 执行:top 输出: PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND root 3320m 689m 10m S : java root 2694m 21m S :28.