This article is a step by step guide for installing Oracle Database 19c on the Oracle Enterprise Linux 7 (OL7). The database created for demonstration purpose in this guide will use local file system.
This article describes how to install Oracle Database 19c Release 3 (19.3.0.0.0) on Linux x86-64 systems (Oracle Linux 7.4).
The procedures in this guide describe how to:
- Configure your system to support Oracle Database
- Install Oracle Database on a local file system by using the Typical Installation option
- Configure a general-purpose Oracle Database that uses the local file system for database file storage
Oracle Official Documentation:
Server / Environment Details:
| Operating System Name / Version | Oracle Linux 7.4 (64 bit) |
| Oracle Database Version | Oracle 19c (19.3.0.0) |
| Hostname | demohost |
| IP Address | 192.168.0.20 |
| Database Name | demodb |
| Database Owner User | oracle |
Download Software:
Download the Oracle software from OTN or MOS.Network Configuration:
Ensure that the node name (demohost) is not included for the loopback address in the /etc/hosts file. It should be like below:
127.0.0.1 localhost.localdomain localhost
Also, the /etc/hosts file must contain a fully qualified name for the server. As shown below:
192.168.0.20 demohost.localdomain demohost
Kindly update the hosts file accordingly. Screenshot for your reference:
Set secure Linux to permissive by editing the "/etc/selinux/config" file, update SELINUX flag to permissive.
[root@demohost ~]# vim /etc/selinux/config
Screenshot for your reference:
If Linux firewall is enabled, you will need to disable it. To disable it, do the following.
# systemctl disable firewalld
Configure Linux Operating System Parameters for Oracle:
Kernel Parameters:
Verify that the kernel parameters mentioned in this section are set to values greater than or equal to the recommended values.
Create a file called "/etc/sysctl.d/98-oracle.conf" and give below mentioned parameters.
kernel.sem = 250 32000 100 128
kernel.shmmni = 4096
kernel.shmall = 1073741824
kernel.shmmax = 4398046511104
kernel.panic_on_oops = 1
net.core.rmem_default = 262144
net.core.rmem_max = 4194304
net.core.wmem_default = 262144
net.core.wmem_max = 1048576
net.ipv4.conf.all.rp_filter = 2
net.ipv4.conf.default.rp_filter = 2
fs.aio-max-nr = 1048576
net.ipv4.ip_local_port_range = 9000 65500
Run following command to change the current kernel parameters.
[root@demohost ~]# /sbin/sysctl -p /etc/sysctl.d/98-oracle.conf
Resource Limits:
update the resource limits in the /etc/security/limits.conf configuration file for the Oracle installation owner by adding the following lines.
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
Install Required Linux Packages for Oracle:
The OUI performs checks during installation to verify that it meets the appropriate operating system package requirements.
binutils
compat-libcap1
compat-libstdc++-33
elfutils-libelf
elfutils-libelf-devel
fontconfig-devel
glibc
glibc-devel
ksh
libaio
libaio-devel
libXrender
libXrender-devel
libX11
libXau
libXi
libXtst
libgcc
libstdc++
libstdc++-devel
libxcb
make
smartmontools
sysstat
unixODBC
Here used yum utility to install the packages.
[root@demohost ~]# yum install -y binutils
Similarly, install all the missing packages.
Create oracle User and Directories:
Create the operating system user and groups that will be used to install and manage the Oracle Database. Create the directories in which the Oracle software will be installed.
[root@demohost ~]# groupadd -g 54301 dba
[root@demohost ~]# groupadd -g 54302 oper
[root@demohost ~]# useradd -u 54300 -g oinstall -G dba,oper oracle
[root@demohost ~]# passwd oracle
[root@demohost ~]# mkdir -p /u01/app/oracle
[root@demohost ~]# chown -R oracle:oinstall /u01
[root@demohost ~]# chown -R oracle:oinstall /oracle_sw/
[root@demohost ~]# chmod -R 775 /u01 /oracle_sw
Install Oracle Database:
Here, we will install Oracle Database software first. The database will be created later using Database Configuration Assistant (DBCA).
Login as root and issue the following command.
xhost +
Switch to oracle user. If using X emulation then set the DISPLAY environmental variable as follows:
DISPLAY=<machine-name>:0.0; export DISPLAY
For example:
[root@demohost ~]# su - oracle
[oracle@demohost ~]$ cd /oracle_sw/db_sw/
[oracle@demohost db_sw]$ export DISPLAY=192.168.0.4:0.0
[oracle@demohost db_sw]$ ./runInstaller
Kindly note that, database software is copied to '/oracle_sw/db_sw/' directory. Also, it will be ORACLE_HOME as well.
Database Creation:
Set ORACLE_HOME and ORACLE_BASE Environment variables for oracle user.
export ORACLE_BASE=/u01/app/oracle
export ORACLE_HOME=/oracle_sw/db_sw
export LD_LIBRARY_PATH=$ORACLE_HOME/lib:/lib:/usr/lib
PATH=$PATH:$HOME/.local/bin:$HOME/bin:$ORACLE_HOME/bin
export PATH
[oracle@demohost ~]$ . ~/.bash_profile
Create a database using the Database Configuration Assistant (DBCA). Lets start listener services before invoking dbca to create database.
Now, we can connect to the database.
[oracle@demohost ~]$ export ORACLE_SID=DEMODB
[oracle@demohost ~]$ sqlplus / as sysdba
With this, we have completed Oracle 19c Database Installation on Oracle Linux successfully.
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