Oracle 11g grid infrastructure安装失败时，或者需要卸载时，不像10g的CRS组件卸载那么麻烦了。
以linux系统为例，10g手工删除CRS的操作步骤：
rm -f /etc/init.d/init.cssd
rm -f /etc/init.d/init.crs
rm -f /etc/init.d/init.crsd
rm -f /etc/init.d/init.evmd
rm -f /etc/rc2.d/K96init.crs
rm -f /etc/rc2.d/S96init.crs
rm -f /etc/rc3.d/K96init.crs
rm -f /etc/rc3.d/S96init.crs
rm -f /etc/rc5.d/K96init.crs
rm -f /etc/rc5.d/S96init.crs
rm -rf /etc/oracle/scls_scr
rm -f /etc/inittab.crs
cp /etc/inittab.orig /etc/inittab
在11g中，提供了一个卸载工具deinstall，如Linux系统下软件名称为linux.x64_11gR2_deinstall.zip。解压后可以直接使用。
第一步、使用grid用户登录操作系统，这个用户是grid infrastructure软件安装用户。
/home/grid/deinstall@serv2=>+ASM2$./deinstall
Location of logs /home/grid/deinstall/logs/
############ ORACLE DEINSTALL & DECONFIG TOOL START ############
Usage:
deinstall -home <Complete path of Oracle home>
[ -silent ]
[ -checkonly ]
[ -local ]
[ -paramfile <complete path of input parameter property file> ]
[ -params <name1=value[ name2=value ...]> ]
[ -o <complete path of directory for saving files> ]
[ -help | -h: Type -h or -help to get more information on each o
f the above options. ]
Specify any of the above options.
############# ORACLE DEINSTALL & DECONFIG TOOL END #############
第二步，使用deinstall -home /u01/app/11.2.0/grid 卸载安装了的文件
/home/grid/deinstall@serv2=>+ASM2$./deinstall -home /u01/app/11.2.0/grid
ORACLE_HOME = /u01/app/11.2.0/grid
Location of logs /home/grid/deinstall/logs/
############ ORACLE DEINSTALL & DECONFIG TOOL START ############
######################## CHECK OPERATION START ########################
Install check configuration START
Checking for existence of the Oracle home location /u01/app/11.2.0/grid
Oracle Home type selected for de-install is: CRS
Oracle Base selected for de-install is: /u01/app/grid
Checking for existence of central inventory location /u01/app/oraInventory
Checking for existence of the Oracle Grid Infrastructure home /u01/app/11.2.0/gr
id
The following nodes are part of this cluster: serv1,serv2
Install check configuration END
Traces log file: /home/grid/deinstall/logs//crsdc.log
Enter an address or the name of the virtual IP used on node "serv1"[serv1-vip]
>
The following information can be collected by running ifconfig -a on node "serv1
"
Enter the IP netmask of Virtual IP "192.168.15.189" on node "serv1"[255.255.255.
0]
>
Enter the network interface name on which the virtual IP address "192.168.15.189
" is active
>
Enter an address or the name of the virtual IP used on node "serv2"[serv2-vip]
>
The following information can be collected by running ifconfig -a on node "serv2
"
Enter the IP netmask of Virtual IP "192.168.15.190" on node "serv2"[255.255.255.
0]
>
Enter the network interface name on which the virtual IP address "192.168.15.190
" is active
>
Enter an address or the name of the virtual IP[]
>
Network Configuration check config START
Network de-configuration trace file location: /home/grid/deinstall/logs/netdc_ch
eck59960.log
Network Configuration check config END
Asm Check Configuration START
ASM de-configuration trace file location: /home/grid/deinstall/logs/asmcadc_chec
k59961.log
ASM configuration was not detected in this Oracle home. Was ASM configured in th
is Oracle home (y|n) [n]: y
Specify the ASM Diagnostic Destination [ ]: /u01/app/11.2.0/grid
Specify the diskgroups that are managed by this ASM instance []: CRS
De-configuring ASM will drop all the diskgroups at cleanup time. Do you want dec
onfig tool to drop the diskgroups y|n [y]: y
######################### CHECK OPERATION END #########################
####################### CHECK OPERATION SUMMARY #######################
Oracle Grid Infrastructure Home is: /u01/app/11.2.0/grid
The cluster node(s) on which the Oracle home exists are: (Please input nodes sep
erated by ",", eg: node1,node2,...)serv1,serv2
Oracle Home selected for de-install is: /u01/app/11.2.0/grid
Inventory Location where the Oracle home registered is: /u01/app/oraInventory
ASM instance will be de-configured from this Oracle home
Do you want to continue (y - yes, n - no)? [n]: y
A log of this session will be written to: '/home/grid/deinstall/logs/deinstall_d
econfig2012-04-24_10-21-03-AM.out'
Any error messages from this session will be written to: '/home/grid/deinstall/l
ogs/deinstall_deconfig2012-04-24_10-21-03-AM.err'
######################## CLEAN OPERATION START ########################
ASM de-configuration trace file location: /home/grid/deinstall/logs/asmcadc_clea
n59962.log
ASM Clean Configuration START
ASM Clean Configuration END
Network Configuration clean config START
Network de-configuration trace file location: /home/grid/deinstall/logs/netdc_cl
ean59963.log
De-configuring Naming Methods configuration file on all nodes...
Naming Methods configuration file de-configured successfully.
De-configuring Local Net Service Names configuration file on all nodes...
Local Net Service Names configuration file de-configured successfully.
De-configuring Directory Usage configuration file on all nodes...
Directory Usage configuration file de-configured successfully.
De-configuring backup files on all nodes...
Backup files de-configured successfully.
The network configuration has been cleaned up successfully.
Network Configuration clean config END
---------------------------------------->
Run the following command as the root user or the administrator on node "serv2".
/home/grid/deinstall/perl/bin/perl -I/home/grid/deinstall/perl/lib -I/home/grid/
deinstall/crs/install /home/grid/deinstall/crs/install/rootcrs.pl -force -delet
e -paramfile /home/grid/deinstall/response/deinstall_Ora11g_gridinfrahome1.rsp -
lastnode
Press Enter after you finish running the above commands
这个步骤中就是为了生成配置文件/home/grid/deinstall/response/deinstall_Ora11g_gridinfrahome1.rsp
第三步，使用root在节点上执行上一个步骤中生成的配置文件的perl脚本
/home/grid/deinstall/perl/bin/perl -I/home/grid/deinstall/perl/lib -I/home/grid/
deinstall/crs/install /home/grid/deinstall/crs/install/rootcrs.pl -force -delet
e -paramfile /home/grid/deinstall/response/deinstall_Ora11g_gridinfrahome1.rsp -
lastnode
至此，卸载grid infrastructure工作结束。在/etc/init.d中也不会有ohasd相关的文件了。
更多Oracle相关信息见Oracle 专题页面 http://www.linuxidc.com/topicnews.aspx?tid=12
本篇文章来源于 Linux公社网站(www.linuxidc.com) 原文链接：http://www.linuxidc.com/Linux/2012-05/60113.htm