Why do you need SSH to install Oracle Database with the RAC option on Linux?
A.
To authenticate the installation user
B.
To copy software to other nodes in the cluster
C.
Oracle Clusterware processes require SSH for post-install authentication across nodes
D.
To authenticate the listener process for inter-node communication
Explanation:
During the installation of Oracle RAC, OUI needs to copy files to and execute
programs on the other nodes in the cluster. In order to allow OUI to do that, you must configure
SSH to allow user equivalence. Establishing user equivalence with SSH provides a secure means
of copying files and executing programs on other nodes in the cluster without requiring password
prompts.