I can understand your pain , This RAC clusterware installations sucks , i have been trying to install RAC on windows 2003 server and its been three weeks still i am stuck , most of the documentation Oracle has is full of shit , no relevant information , so i Opened a TAR , and there were something which i had to tell them how it will work , this Installer is probably worst ever
There is a thing called cluster verify , you run that and it checks that the nodes can be reached , user equivalence is ok and checks that shared storage can be accessed and all other stuff in end say cluster verification passed , its full of crap when you try to install it cries at each step , infact i have TAR still open , since it installs the clusterware but while configuring it fails to start CRS stack on one node and fails and Gread Oracle Support is still not able to figure why , they say 10gR2 was released only last year and there are some issues , and there are already 6 patches for 10gR2 in five months. i have raised the severity level to 2 for TAR and still Oracle is struggling
i am telling you this Clusterware is nothing but beta software being released by Oracle to make customers go crazy while installing it and there by helping Oracle as to how this shit works , its amazing how you pay such a fat license fee and the End product is not even tested fully or documentation is incomplete and vague
i think Oracle should start making better products or it will loose market very soon. but as long as there are lot of stupids who buy this shit no matter how bad it is and how costly it is , they will not change.