第一步:连接服务器,输入sqlplus 第二步:以sysdba身份登陆 第三步:查看和修改processes和sessions参数 1. 查看processes和sessions参数 select * from v$resource_limit; //查看process和sessions,更方便 SQL> show parameter processes NAME TYPE VALUE db_writer_
Oracle中有三类进程: 1 User Process 2 Server Process Server Process is a program that directly interacts with the Oracle Server. Once a user has established a connection, a server is started to handle the user processes requests. The user process does not i
1.查看当前磁盘 [root@std u01]# fdisk -l Disk /dev/sda: bytes heads, sectors/track, cylinders Units = cylinders of * = bytes Device Boot Start End Blocks Id System /dev/sda1 * + Linux /dev/sda2 Linux swap / Solaris Disk /dev/sdb: MB, bytes heads, sectors/tr
1.查看当前系统版本 [oracle@std Disk1]$ sqlplus '/as sysdba' SQL*Plus: Release - Production on Thu Jan :: Copyright (c) , , Oracle. All rights reserved. Connected to: Oracle Database 10g Enterprise Edition Release - Production With the Partitioning, Oracle La
怎样查看oracle当前的连接数呢?只需要用下面的SQL语句查询一下就可以了. #查看当前不为空的连接select * from v$session where username is not null #查看不同用户的连接数 select username,count(username) from v$session where username is not null group by username #连接数 select count(*) from v$session #并发连接数
遭遇cpu过多占用,表现为%usr很高,top 或者topas中cpu占用最多的进程为oracle server process. 则根据pid可以找出该pid对应的sql_text select se.username,se.machine,sq.cpu_time,sq.sql_text from v$process p,v$session se,v$sqlarea sq where p.addr=se.paddr and se.sql_hash_value=sq.hash_value and
Version 11.1 Actions As SYS Note: USERENV is an Oracle provided namespace that describes the current session. Syntax SELECT sys_context('<namespace>', '<parameter>', <length>); FROM DUAL; Attribute Return Value ACTION Identifies the