The AUR package uses the RPM to install it, this is from the PKGBUILD:
source=('https://download.oracle.com/otn-pub/otn_software/db-express/oracle-database-xe-18c-1.0-1.x86_64.rpm'The AUR package uses the RPM to install it, this is from the PKGBUILD:
source=('https://download.oracle.com/otn-pub/otn_software/db-express/oracle-database-xe-18c-1.0-1.x86_64.rpm'