Oracle recommends that you complete these tasks after installation.

• Creating a Backup of the root.sh Script
  Oracle recommends that you back up the root.sh script after you complete an installation.
• Updating the Oracle ORAchk Health Check Tool
  Update the existing version of your Oracle ORAchk utility to perform proactive heath checks for the Oracle software stack.
• Creating a Fast Recovery Area
  During an Oracle Restart installation, you can create only one disk group. During an Oracle Clusterware installation, you can create multiple disk groups. If you plan to add an Oracle Database for a standalone server or an Oracle RAC database, then you should create the fast recovery area for database files.
• Checking the SCAN Configuration
  The Single Client Access Name (SCAN) is a name that is used to provide service access for clients to the cluster. Because the SCAN is associated with the cluster as a whole, rather than to a particular node, the SCAN makes it possible to add or remove nodes from the cluster without needing to reconfigure clients.
• Setting Resource Limits for Oracle Clusterware and Associated Databases and Applications
  After you have completed Oracle Grid Infrastructure installation, you can set resource limits in the Grid_home/crs/install/s_crsconfig_nodename_env.txt file.