11g的psu的安装默认都是用auto的方式来安装，但是在11.2.0.3这个版本aix平台上，我很不幸的遭遇了auto无法安装的bug 16835171，报错如下：
Using configuration parameter file: /opt/app/11.2.0/grid/crs/install/crsconfig_params
Either does not exist or is not readable
Make sure the file exists and it has read and execute access
Clusterware home location does not exist
解决办法就是使用手工安装的方式，比较繁冗，官方描述如下：
Solution
At the time of this writing, the bug is still being worked by Development.
The workaround is to apply the patch manually.
The manual instruction is part of patch readme。
手工安装psu的方式参考以下网页：
http://www.ludatou.com/index.php/archives/1069
