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Oracle Database 19c is the latest stable version for production use and this article describes the all steps to install Oracle Database 19c 64-bit on Oracle Linux 8 (OL8) 64-bit. This article is divided into several sections:
Installation requirements Checklist
Installation Prerequisites
Oracle Installation and its steps
Database Creation
Final Checking database
Please check the checklists that your server hardware and configuration meet minimum requirements for this release, and can help you to ensure you carry out a successful installation. There are the basic requirements checklists to install Oracle Database 19c.
Hardware:
Physical RAM: At least 1 GB RAM for Oracle Database installations. 2 GB RAM recommended. At least 8 GB RAM for Oracle Grid Infrastructure installations.
Swap Space: 2 times the size of RAM. To check,
Space requirement for Oracle 19c Software: Enterprise Edition Minimum 10G
OS:
Linux x86-64 operating system requirements - Oracle Linux 8.5 or Later / Red Hat Enterprise Linux 7.5 or later / SUSE Linux Enterprise Server 12 or later
For full requirement checklists, Please see https://docs.oracle.com/en/database/oracle/oracle-database/19/ladbi/oracle-database-installation-checklist.html#GUID-E847221C-1406-4B6D-8666-479DB6BDB046
Download the latest Long Term Release Oracle Database 19c from https://www.oracle.com/database/technologies/oracle-database-software-downloads.html#19c
Oracle also provides all supported database release software for all platforms on the Oracle Software Delivery Cloud: https://edelivery.oracle.com
You have a Oracle Database 19c and you need to install it in Linux machine. For Linux machine, you need to work some prerequisites where dose not need when you install oracle 19c in windows machine.
Create Oracle Installation Directory:
Create the directories in which the Oracle software will be installed.
mkdir -p /u01/app/oracle/product/19.0.0/dbhome_1 mkdir -p /u02/oradata
Give group and access permission to /u01 /u02 directories
chown -R oracle:oinstall /u01 /u02 chmod -R 775 /u01 /u02
Check hostname:
To check hostname, open the /etc/hosts
# vi /etc/hosts
You will see as follows
127.0.0.1 localhost localhost.localdomain localhost4 localhost4.localdomain4
Add a new hostname with IP as syntax.
<IP> <hostname> <machine-name>
Example:
127.0.0.1 localhost localhost.localdomain localhost4 localhost4.localdomain4 192.192.192.111 oradb.mydomain.org oradb
After you change press Esc then ‘:wq’ and press enter.
NB!! Make sure you can ping the hostname you added in the host file.
Stop Firewalld:
Stop Firewalld by using the command: systemctl stop firewalld
If you have the Linux firewall enabled, you will need to disable or configure it, as shown here. To disable it, do the following.
# systemctl stop firewalld # systemctl disable firewalld
Setup oracle database preinstall:
Before you begin the installation you are required to do so many configurations manually. But Oracle has given a good feature which is called Prebuilt Prerequisites that help you to do the pre-installation configurations easily. That lets you check what are the prerequisites you have and whether your machine is capable to run those prerequisites or not.
If you logged in as the root user, you can directly run the command to install the prerequisites. But if you have logged in as another user, please go to the root user before running the prerequisites installation.
If you plan to use the "oracle-database-preinstall-19c" package to perform all your prerequisite setup, issue the following command.
# yum install -y oracle-database-preinstall-19c
Update for optional: It is probably worth doing a full update as well, but this is optional.
# yum update -y
It's worth running all the YUM commands listed in the manual setup section. Depending on the OS package groups you have selected, some additional packages might also be needed.
RPM for RHEL7 or CentOS7:
Install PRM which will pick up from the OL7 repository and install it. PRM will pull the dependencies from your normal repositories.
# yum install -y https://yum.oracle.com/repo/OracleLinux/OL7/latest/x86_64/getPackage/oracle-database-preinstall-19c-1.0-1.el7.x86_64.rpm
Set the password for the "oracle" user.
passwd reset for oracl:
I told you that a user called oracle has created with the help of prerequisites. Yeah, a user has created, and do you know the password for the oracle user. No. Since we have connected as the root user, we can change the password of the oracle user. Type the following command and it will ask you to enter a new password and retype to confirm the new password.
passwd oracle
Enter New password and retype confirm password which will be used for Oracle User.
Set xhost:
Unless you are working from the console, or using SSH tunnelling, login as root and issue the following command.
xhost +<machine-name>
Update SELINUX:
Since you need to run Oracle Universal Installer, which is a GUI we need to check the Linux Permissive first. Otherwise, you will get an error and graphics will not come for installation. Type the following command on your terminal.
#vi /etc/selinux/config
Making sure the SELINUX flag is set as follows.
SELINUX=permissive
After you change press Esc then ‘:wq’ and press enter.
Once the change is complete, restart the server or run the following command.
# setenforce Permissive
Create script for Oracle Environment Configuration:
First of all, create a directory for all scripts as follows:
mkdir /home/oracle/scripts
Create an environment file called "setEnv.sh". Check all path and value of following script and if everything is fine according to your machine, then execute.
cat > /home/oracle/scripts/setEnv.sh <<EOF # Oracle Settings export TMP=/tmp export TMPDIR=\$TMP export ORACLE_HOSTNAME=oracle.mydomain.org export ORACLE_UNQNAME=cdb1 export ORACLE_BASE=/u01/app/oracle export ORACLE_HOME=\$ORACLE_BASE/product/19.0.0/dbhome_1 export ORA_INVENTORY=/u01/app/oraInventory export ORACLE_SID=cdb1 export PDB_NAME=pdb1 export DATA_DIR=/u02/oradata export PATH=/usr/sbin:/usr/local/bin:\$PATH export PATH=\$ORACLE_HOME/bin:\$PATH export LD_LIBRARY_PATH=\$ORACLE_HOME/lib:/lib:/usr/lib export CLASSPATH=\$ORACLE_HOME/jlib:\$ORACLE_HOME/rdbms/jlib EOF
***The "$" characters are escaped using "\". If you are not creating the file with the cat command, you will need to remove the escape characters.
Add a reference to the "setEnv.sh" file at the end of the "/home/oracle/.bash_profile" file.
echo ". /home/oracle/scripts/setEnv.sh" >> /home/oracle/.bash_profile
Create a "start_all.sh" and "stop_all.sh" script that can be called from a startup/shutdown service. Make sure the ownership and permissions are correct.
cat > /home/oracle/scripts/start_all.sh <<EOF #!/bin/bash . /home/oracle/scripts/setEnv.sh export ORAENV_ASK=NO . oraenv export ORAENV_ASK=YES dbstart \$ORACLE_HOME EOF cat > /home/oracle/scripts/stop_all.sh <<EOF #!/bin/bash . /home/oracle/scripts/setEnv.sh export ORAENV_ASK=NO . oraenv export ORAENV_ASK=YES dbshut \$ORACLE_HOME EOF chown -R oracle:oinstall /home/oracle/scripts chmod u+x /home/oracle/scripts/*.sh
Once the installation is complete and you've edited the "/etc/oratab", you should be able to start/stop the database with the following scripts run from the "oracle" user.
~/scripts/start_all.sh ~/scripts/stop_all.sh
Unzip the File
# Unzip software.
Switch to the ORACLE_HOME directory, unzip the software directly into this path and start the Oracle Universal Installer (OUI) by issuing one of the following commands in the ORACLE_HOME directory.
cd $ORACLE_HOME unzip -oq /home/oracle/Downloads/LINUX.X64_193000_db_home.zip
Update DISPLAY:
Log into the oracle user. If you are using X emulation then set the DISPLAY environmental variable.
DISPLAY=<machine-name>:0.0; export DISPLAY
The interactive mode will display GUI installer screens to allow user input, while the silent mode will install the software without displaying any screens, as all required options are already specified on the command line.
# Interactive mode. ./runInstaller
Now, proceed according to the OUI instruction and click next.....
Step1 : Click create and configure a single instance database
Step2 : Click Server class
Step3 : Select Enterprise Edition
Step 4:Choose location for ORACLE_BASE
Step 5: Select configuration type as General Purpose / Transaction Processing.
Step 6: Enter Database name
Step 7: Enter database file location
Step 8: Enable Archivelog mode option for database
Step 9: Enter SYS and SYSTEM user password
Step 10: Check OS groups for installation
Step 11: Check Prerequisite checks for 19c database installation
Step 12: Check Summary
Step 13: Run root.sh and Orainventory scripts :
Run the root scripts when prompted.
As a root user, execute the following script(s):
1. /u01/app/oraInventory/orainstRoot.sh
2. /u01/app/oracle/product/19.0.0/dbhome_1/root.sh
Step 14: Check database status
Type sqlplus and enter,
type sys as sysdba and enter
give password and enter
type show con_name and enter
Commands and outputs are as like:
To uninstall Oracle database:
[oracle@vm ~]$ cd $ORACLE_HOME/deinstall/
