Oracle Database 19c Installation on Oracle Linux 7.6 Step by Step | Offline and Manual install

In this video we are going to demonstrate how to install Oracle Database 19c in Oracle Linux 7.6.
Oracle Database 19c is RDBMS software from Oracle Corporation with tons of features including Cloud Support.
Oracle Database 19c installation in Oracle Linux 7 Platform is very easy.
This video guides step by step installation of oracle 19c includes:
1. Preparing the Oracle Linux 7.6 Operating System for Database 19c installation.
2. Virtual Box Settings for Oracle Linux 7 VM.
3. Setting the static ip address
4. kernel parameters configuration
5. Resource limit configuration and stopping the Firewall
6. dependencies installation
7. oracle database installation
8. Host name configuration for Oracle Linux VM.
9. Oracle listener configuration after installation.
10. Starting the Database in SQL Plus
11. Create one Common user called “c##scott”
12. SQL Developer 19.1 Connectivity with Oracle database 19c (19.3)
13. Mounting the pluggable database orclpdb and check connectivity on SQL Developer.
14. Access the Oracle Enterprise Manager on host machine browser.

Hardware Requirements : Enough Hard disk space, RAM and Swap Memory which satisfies the Oracle Installer during prerequisites checks.
Software Requirements : Oracle Linux 7.6 (minimum 7.4) with dependencies for oracle database 19c to be installed and Kernel Parameters and resource limits configured.
Oracle 19c zip (LINUX.X64_193000_db_home) file for linux downloaded and installed, SQL Developer 19.1 which will connects the latest 19c database.
Installation Class : Desktop class is choosen, which is easy to configure for desktops and laptops.
Installation method : Offline
Download Oracle database 19c from: https://www.oracle.com/technetwork/database/enterprise-edition/downloads/index.html
Download SQL Developer from : https://www.oracle.com/technetwork/developer-tools/sql-developer/downloads/index.html

Important Note on hostname configuration: To avoid Port already in use error I will be configuring hostname at the end of installation.
Important Note on Linux OS Partitions: Linux Partitions can be configured based on your needs, if you have enough RAM, Processor cores and Hard disk space.
More the swap and RAM space, Oracle performance will be good.

/etc/sysctl.conf settings used in this video

fs.aio-max-nr = 1048576
fs.file-max = 6815744
kernel.shmall = 1073741824
kernel.shmmax = 4398046511104
kernel.shmmni = 4096
kernel.sem = 250 32000 100 128
kernel.panic_on_oops = 1
net.ipv4.ip_local_port_range = 9000 65500
net.core.rmem_default = 262144
net.core.rmem_max = 4194304
net.core.wmem_default = 262144
net.core.wmem_max = 1048576

/etc/security/limits.conf settings used in this video
oracle soft nofile 1024
oracle hard nofile 65536
oracle soft nproc 16384
oracle hard nproc 16384
oracle soft stack 10240
oracle hard stack 32768
oracle hard memlock 134217728
oracle soft memlock 134217728