一、安装需知：
1、数据库版本和grid版本号要一致
2、grid版本比oracle版本低，需要升级grid版本，否则dbca失败。
3、本实验采用oracle11.2.0.3.0
4、本实验最先采用grid[11.2.0.1.0]，最后又升级到grid[11.2.0.3.0]
5、系统采用linux RED5，linux6就不要用了，6不支持asmlib内核。
第2、4、5点需要注意。
二、系统环境：
操作系统版本：
[root@red1 ~]# uname -r
2.6.18-53.el5xen
[root@red1 ~]# uname -a
Linux red1 2.6.18-53.el5xen #1 SMP Wed Oct 10 16:48:44 EDT 2007 x86_64 x86_64 x86_64 GNU/Linux
数据库版本：
SQL> select * from v$version;
BANNER
--------------------------------------------------------------------------------
Oracle Database 11g Enterprise Edition Release 11.2.0.3.0 - 64bit Production
PL/SQL Release 11.2.0.3.0 - Production
CORE 11.2.0.3.0 Production
TNS for Linux: Version 11.2.0.3.0 - Production
NLSRTL Version 11.2.0.3.0 - Production
查看grid版本---需要升级：
[grid@red1 bin]$ crsctl query has softwareversion
Oracle High Availability Services version on the local node is [11.2.0.1.0]
grid版本---升级后的：
[grid@red1 bin]$ crsctl query has softwareversion
Oracle High Availability Services version on the local node is [11.2.0.3.0]
grid升级到[11.2.0.3.0]
查看grid版本：
[grid@red1 bin]$ crsctl query has softwareversion
Oracle High Availability Services version on the local node is [11.2.0.1.0]
升级到11.2.0.3.0
下载地址：
http://blog.csdn.net/tanguooo19866/article/details/8568357
升级包：https://updates.oracle.com/Orion/Services/download/p10404530_112030_Linux-x86-64_3of7.zip?aru=14125322&patch_file=p10404530_112030_Linux-x86-64_3of7.zip
升级手段：建立新的安装目录，需要足够的磁盘空间安装grid软件。2g足够！
1解压：p10404530_112030_Linux-x86-64_3of7.zip
2、验证
建立grid新目录，并切换到升级包目录，执行：
./runcluvfy.sh stage -pre crsinst -upgrade -n red1 -rolling -src_crshome /opt/grid -dest_crshome /opt/grid_11.2.0.3 -dest_version 11.2.0.3.0 -fixup -fixupdir /opt/grid_update_package
./runcluvfy.sh stage -pre crsinst -upgrade -n red1 -src_crshome /opt/grid -dest_crshome /opt/grid_11.2.0.3 -dest_version 11.2.0.3.0 -fixup -fixupdir /opt/grid_update_package
[grid@red1 grid]$ ./runcluvfy.sh stage -pre crsinst -upgrade -n red1 -src_crshome $ORACLE_HOME -dest_crshome /opt/grid_11.2.0.3 -dest_version 11.2.0.3.0 -fixup -fixupdir /tmp -verbose
Performing pre-checks for cluster services setup
Checking node reachability...
Check: Node reachability from node "red1"
Destination Node Reachable?
------------------------------------ ------------------------
red1 yes
Result: Node reachability check passed from node "red1"
Checking user equivalence...
Check: User equivalence for user "grid"
Node Name Status
------------------------------------ ------------------------
red1 failed
Result: PRVF-4007 : User equivalence check failed for user "grid"
ERROR:
User equivalence unavailable on all the specified nodes
Verification cannot proceed
Pre-check for cluster services setup was unsuccessful on all the nodes.
[grid@red1 grid]$
启动图形界面安装，选择update，点下一步就成。
最后执行1个root脚本，选择y覆盖目录，提示
CRS-4664: Node red1 successfully pinned.
Replacing Clusterware entries in inittab
Replacing Clusterware entries in inittab
red1 2014/08/04 11:55:21 /opt/grid_11.2.0.3/cdata/red1/backup_20140804_115521.olr
red1 2014/08/01 15:39:17 /opt/grid/cdata/red1/backup_20140801_153917.olr
Successfully configured Oracle Grid Infrastructure for a Standalone Server
安装完成后修改环境变量到新目录。
修改环境变量：
验证新版本：
[grid@red1 ~]$ crsctl query has softwareversion
Oracle High Availability Services version on the local node is [11.2.0.3.0]