Description of the installation of the Oracle database software is included in this guide for informational purposes only.
Installation is done by using https://oracle-base.com/articles/12c/oracle-db-12cr1-installation-on-oracle-linux-7
Note that Oracle 19c on Oracle Linux 7.x. presents an unstable environment. Oracle database might lose connection or stop working at certain times. These problems are not related to the HSM connection.