Are you really cloning to a RAC target? Have you already installed the Grid infrastructure? Please see the following notes:
Cloning Oracle E-Business Suite Release 12 RAC-Enabled Systems with Rapid Clone (Doc ID 559518.1)
Using Oracle Real Application Clusters 11g Release 2 with Oracle E-Business Suite Release 12 (Doc ID 823587.1)
Yes we have installed grid and already several databases are in.
Please check MOS - 443667.1
Can you please tell me when runing
on a node of cluster (here is server51)
on RAC, what should we answer to the question:
Target System Hostname (virtual or normal) [server51]
Should we keep default answer or give cluster_name?
If you are able to ping server51 then keep the same name.