/opt/oracle/oak/bin/oakcli apply core_configuration_key key_file_location
For example:
/opt/oracle/oak/bin/oakcli apply core_configuration_key /home/myfile.txt
After the system restarts, Oracle Database Appliance is reconfigured. Both servers run with the specified CPU core count. You must always assign cores on Oracle Database Appliance X5-2 bare-metal deployments in multiples of two, with a minimum of two cores.