Configure your system to meet the software requirements, if you did not complete your system configuration during the Oracle Grid Infrastructure installation.

• Load SSH Keys Into Memory Before Starting DBCA
  Load SSH keys into memory for the terminal session where you start Oracle DBCA, to avoid user equivalency errors while starting Oracle DBCA.
• Decide on a Naming Convention to Use for Your Oracle RAC Database
  Review this information for naming conventions for Oracle RAC database.
• Configure Shared Storage for the Oracle RAC Database
  Install Oracle Grid Infrastructure for a cluster and configure shared storage for Oracle RAC files before creating an Oracle RAC database using Oracle DBCA.