设置linux重启后oracle自动启动的步骤

数据库单机，为什么这么慢呢，这么空闲

DB Name	DB Id	Instance	Inst num	Startup Time	Release	RAC
XE	2672432555	XE	1	16-Aug-12 16:08	11.2.0.2.0	NO

Host Name	Platform	CPUs	Cores	Sockets	Memory (GB)
localhost.localdomain	Linux x86 64-bit				.00

	Snap Id	Snap Time	Sessions	Cursors/Session
Begin Snap:	355	29-Aug-12 12:00:20
End Snap:	356	29-Aug-12 13:00:40
Elapsed:		60.34 (mins)
DB Time:		0.00 (mins)

Report Summary

那是应该有很多应用（CPU 和Mem没有了）

top - 13:23:32 up 12 days, 21:05, 14 users, load average: 0.13, 3.69, 6.22

Tasks: 433 total, 1 running, 431 sleeping, 1 stopped, 0 zombie

Cpu(s): 13.6%us, 1.3%sy, 0.0%ni, 85.1%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st

Mem: 32841032k total, 31489664k used,
1351368k free, 5940k buffers

Swap: 32767992k total, 403456k used, 32364536k free, 102016k cached

PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND

14248 root 20 0 1380m 377m 1048 S 195.0 1.2 2398:51 BrdUnostat_pd

28460 root 20 0 1024m 11m 836 S 28.9 0.0 4950:43 BrdUnostat_Abis

以下步骤是自动启动步骤（断电开机后，自动拉起）：

[root@localhost ~]# uname -a

Linux localhost.localdomain 2.6.32-71.el6.x86_64 #1 SMP Wed Sep 1 01:33:01 EDT 2010 x86_64 x86_64 x86_64 GNU/Linux

1.用root在/etc/rc.d/rc.local(是个文件)中添加下面红色的内容

[root@ksdb rc.d]# more rc.local;

#!/bin/sh

#

# This script. will be executed *after* all the other init scripts.

# You can put your own initialization stuff in here if you don't

# want to do the full Sys V style. init stuff.

touch /var/lock/subsys/local

##the script. add /etc/rc.d/rc.local##

##start db script###

export ORACLE_SID=XE

export ORACLE_HOME=/u01/app/oracle/product/11.2.0/xe

su - oracle -c
"/u01/app/oracle/product/11.2.0/xe/bin/dbstart"

2.设置：用root在

/etc/oratab中设置下面：

[root@localhost ~]# more /etc/oratab

XE:/u01/app/oracle/product/11.2.0/xe:N

把N改成Y

3.修改$ORACLE_HOME/bin/dbstart脚本(先备份dbstart）

注释掉下面一行

ORACLE_HOME_LISTNER=$1

效果如下：

# Set this to bring up Oracle Net Listener

#ORACLE_HOME_LISTNER=$1

添加下面一行：

export ORACLE_HOME_LISTNER=$ORACLE_HOME

效果：

# Set this to bring up Oracle Net Listener

#ORACLE_HOME_LISTNER=$1

export ORACLE_HOME_LISTNER=$ORACLE_HOME

保存dbstart脚本

3.用root.重启，应该就没有问题了