今天在安装一套11.2.0.2 RAC数据库时出现了INS-35354的问题：  11gR2-GI-INS-35354因为之前已经成功安装了11.2.0.2的GI，而且Cluster的一切状态都正常，出现这错误都少有点意外: 
[grid@vrh1 ~]$ crsctl check crs
CRS-4638: Oracle High Availability Services is online
CRS-4537: Cluster Ready Services is online
CRS-4529: Cluster Synchronization Services is online
CRS-4533: Event Manager is online
去MOS搜了一圈，发现有可能是oraInventory中的inventory.xml更新不正确导致的： 
Applies to:
Oracle Server - Enterprise Edition - Version: 11.2.0.1 to 11.2.0.2 - Release: 11.2 to 11.2
Information in this document applies to any platform.
Symptoms

Installing 11gR2 database software in a Grid Infrastrsucture environment fails with the error INS-35354:

The system on which you are attempting to install Oracle RAC is not part of a valid cluster.

Grid Infrastructure (Oracle Clusterware) is running on all nodes in the cluster which can be verified with:

crsctl check crs

Changes
This is a new install.
Cause
As per 11gR2 documentation the error description is:

INS-35354: The system on which you are attempting to install Oracle RAC is not part of a valid cluster.

Cause: Prior to installing Oracle RAC, you must create a valid cluster.
This is done by deploying Grid Infrastructure software,
which will allow configuration of Oracle Clusterware and Automatic Storage Management.

However, the problem at hand may be that the central inventory is missing the "CRS=true" flag
(for the Grid Infrastructure Home).
<inventory.xml>
-------------

<HOME_LIST>
<HOME NAME="Ora11g_gridinfrahome1" LOC="/u01/grid" TYPE="O" IDX="1">
<NODE_LIST>
<NODE NAME="node1"/>
<NODE NAME="node2"/>
</NODE_LIST>