We must to migrate a RAC SAP CLUSTER 10g for 11gR2.
In the White Paper from Oracle (http://www.google.com/url?sa=t&rct=j&q=configuration%20of%20sap%20netweaver%20for%20oraclegrid%20infrastructure%2011.2.0.2%20and%20oracle%20realapplication%20clusters%2011g%20release%202%3Aa%20best%20practices%20guide&source=web&cd=1&cad=rja&ved=0CC8QFjAA&url=http%3A%2F%2Fwww.oracle.com%2Fus%2Fsolutions%2Fsap%2Fwp-o11g-rac-config-unx-303802.pdf&ei=Vf-tULapHYXk9ASu54G4Bg&usg=AFQjCNE7ITBSEgcJWCTtNMS15gwGTcAk7g)
Note: SAP with RAC requires a Shared Oracle Home. Oracle Grid Infrastructure software is installed locally on each node of the cluster.
My question is: Why SAP require a Shared Oracle Home for software Database?
I know that the Software SAP for Oracle Database does not work with Oracle Clusterware, ie, the runInstaller does not recognize the type of database installation, in case Real Application Clusters database instalation, according SAP.