The Oracle VM Manager Installer and the oracle-rdbms-server-12cR1-preinstall RPM and soft nofile settings
If the oracle-rdbms-server-12cR1-preinstall RPM is part of your standatrd OS install you'll run into an issue with the Oracle VM Manager installer complaining about the wrong soft nofile settings. The oracle-rdbms-server-12cR1-preinstall RPM makes a file named "/etc/security/limits.d/oracle-rdbms-server-12cR1-preinstall.conf" that overrides the limits.conf setting. You will need to edit the /etc/security/limits.d/oracle-rdbms-server-12cR1-preinstall.conf file to properly set the soft nofile settings.
# oracle-rdbms-server-12cR1-preinstall setting for nofile soft limit is 1024
# oracle soft nofile 1024
# changed for Oracle VM requirements
oracle soft nofile 8192
Document Created: 09/19/11
Last Update: 9/7/15
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