To restart an Oracle Database or Automatic Storage Management instance: If required, repeat Steps 1 and 2 of the preceding procedure to set the ORACLE_SID and ORACLE_HOME environment variables to identify the SID and Oracle home directory for the instance that you want to start.
I’ve now created a new tutorial that uses OpenCore instead of Clover, and it fixes a lot of problems. I recommend using the new tutorial for all new builds. This tutorial for installing macOS Catalina has been adapted for Proxmox 6 from Kholia’s GitHub project for installing into vanilla KVM.