From 19c Oracle can be installed on Oracle Linux OS using an RPM. In this article we’ll perform an RPM installation of Oracle Database 19c 64-bit on Oracle Linux 7 (OL7) 64-bit. 

Step 1: Download the RPM from OTN

Download the oracle-database-ee-19c-1.0-1.x86_64.rpm file from Oracle Technology Network required for performing an RPM-based installation to a directory of your choice.

Step 2: Install it using YUM

Once downloaded, move the rpm file to a directory of your choice and then install the package using yum as shown below:

[root@oracle19c ]# yum -y localinstall oracle-database-ee-19c-1.0-1.x86_64.rpm
Loaded plugins: langpacks, ulninfo
Examining oracle-database-ee-19c-1.0-1.x86_64.rpm: oracle-database-ee-19c-1.0-1.x86_64
Marking oracle-database-ee-19c-1.0-1.x86_64.rpm to be installed
Resolving Dependencies
--> Running transaction check
---> Package oracle-database-ee-19c.x86_64 0:1.0-1 will be installed
--> Processing Dependency: oracle-database-preinstall-19c for package: oracle-database-ee-19c-1.0-1.x86_64
ol7_UEKR5                                                                                                                                                             | 1.2 kB  00:00:00
ol7_latest                                                                                                                                                            | 1.4 kB  00:00:00
--> Running transaction check
---> Package oracle-database-preinstall-19c.x86_64 0:1.0-1.el7 will be installed
--> Finished Dependency Resolution

Dependencies Resolved

=============================================================================================================================================================================================
 Package                                                Arch                           Version                            Repository                                                    Size
=============================================================================================================================================================================================
Installing:
 oracle-database-ee-19c                                 x86_64                         1.0-1                              /oracle-database-ee-19c-1.0-1.x86_64                         6.9 G
Installing for dependencies:
 oracle-database-preinstall-19c                         x86_64                         1.0-1.el7                          ol7_latest                                                    18 k

Transaction Summary
=============================================================================================================================================================================================
Install  1 Package (+1 Dependent package)

Total size: 6.9 G
Total download size: 18 k
Installed size: 6.9 G
Downloading packages:
warning: /var/cache/yum/x86_64/7Server/ol7_latest/packages/oracle-database-preinstall-19c-1.0-1.el7.x86_64.rpm: Header V3 RSA/SHA256 Signature, key ID ec551f03: NOKEY|    0 B  --:--:-- ETA
Public key for oracle-database-preinstall-19c-1.0-1.el7.x86_64.rpm is not installed
oracle-database-preinstall-19c-1.0-1.el7.x86_64.rpm                                                                                                                   |  18 kB  00:00:03
Retrieving key from file:///etc/pki/rpm-gpg/RPM-GPG-KEY-oracle
Importing GPG key 0xEC551F03:
 Userid     : "Oracle OSS group (Open Source Software group) "
 Fingerprint: 4214 4123 fecf c55b 9086 313d 72f9 7b74 ec55 1f03
 Package    : 7:oraclelinux-release-7.6-1.0.15.el7.x86_64 (@anaconda/7.6)
 From       : /etc/pki/rpm-gpg/RPM-GPG-KEY-oracle
Running transaction check
Running transaction test
Transaction test succeeded
Running transaction
Warning: RPMDB altered outside of yum.
  Installing : oracle-database-preinstall-19c-1.0-1.el7.x86_64                                                                                                                           1/2
  Installing : oracle-database-ee-19c-1.0-1.x86_64                                                                                                                                       2/2
[INFO] Executing post installation scripts...
[INFO] Oracle home installed successfully and ready to be configured.
To configure a sample Oracle Database you can execute the following service configuration script as root: /etc/init.d/oracledb_ORCLCDB-19c configure
  Verifying  : oracle-database-preinstall-19c-1.0-1.el7.x86_64                                                                                                                           1/2
  Verifying  : oracle-database-ee-19c-1.0-1.x86_64                                                                                                                                       2/2

Installed:
  oracle-database-ee-19c.x86_64 0:1.0-1

Dependency Installed:
  oracle-database-preinstall-19c.x86_64 0:1.0-1.el7

Complete!
[root@oracle19c]#

That is it, Oracle Software is now Installed and you can now create the database.