/var/log/messages showed the following error messages
<Month date time> <hostname> seload[390316]: Loading CA ControlMinder kernel extension. <Month date time> <hostname> seload[390316]: Error 1 in loading CA ControlMinder kernel <hostname> seload[390316]: Loading CA ControlMinder kernel extension. <Month date time> <hostname> seload[390316]: Error 1 in loading CA ControlMinder kernel <hostname> seload[390316]: Error 1 in loading CA ControlMinder kernel.
Cause
UEFI Secure Boot was enabled in this Oracle Exadata machine.
Environment
Red Hat Enterprise Linux Server release 6.10 (Santiago) 4.1.12-94.8.6.el6uek.x86_64 # Privileged Identity Manager 12.8 SP1
Resolution
In OEL Exadata machine Secure Boot needs to be disabled to load CA Privileged Identity Manager kernel. Once UEFI Secure Boot was disabled in this Oracle Exadata machine, CA Privileged Identity Manager kernel loaded fine.