Oracle Database 23ai introduces the next generation of Oracle client software with improved AI-ready capabilities, enhanced security, and better performance. Whether you’re preparing a server for SQL*Plus, RMAN, Data Pump, or application connectivity, installing the Oracle Database 23ai Client is straightforward.

This guide walks through the complete installation process on Oracle Linux using the graphical installer.

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Prerequisites

Before starting the installation, ensure the following requirements are met.

• Oracle Linux 8 or later
• X11 Display configured (for GUI installation)
• Oracle software owner created
• Required packages installed
• Oracle Base directory created
• Minimum 3 GB free disk space

Example directory structure:

Oracle Base : /u01/app/oracle
Oracle Home : /u01/app/oracle/product/23.0.0/client_2

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Step 1 – Launch the Installer

Navigate to the extracted client software.

cd /home/oracle/install/client

Start the installer.

./runInstaller

The Oracle Database Client Installer opens.

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Step 2 – Select Installation Type

Choose the installation type according to your requirements.

Available options include:

• Administrator (Recommended)
  • SQL*Plus
  • Oracle Net
  • Data Pump
  • Recovery Manager (RMAN)
  • Oracle utilities
  • Management tools
• Runtime
• Custom

For most DBA environments, select Administrator.

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Step 3 – Specify Installation Location

Configure Oracle Base and Oracle Home.

Example:

Oracle Base:
/u01/app/oracle

Oracle Home:
/u01/app/oracle/product/23.0.0/client_2

Click Next.

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Step 4 – Perform Prerequisite Checks

The installer validates:

• Available disk space
• Operating system version
• Kernel parameters
• Required packages
• User groups
• Environment configuration

If all checks pass, continue by clicking Next.

If warnings appear, review and resolve them before proceeding.

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Step 5 – Review Installation Summary

Verify all selected options.

Typical summary:

Setting	Value
Installation Type	Administrator
Oracle Base	/u01/app/oracle
Oracle Home	/u01/app/oracle/product/23.0.0/client_2
Disk Space	2.4 GB Required

Click Install to begin copying files.

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Step 6 – Install Oracle Client

The installer performs several operations.

• Prepare installation
• Copy files
• Link binaries
• Configure Oracle Base
• Configure Oracle Client

The installation progress window displays the current status.

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Step 7 – Verify the Installation

Load the Oracle environment.

export ORACLE_HOME=/u01/app/oracle/product/23.0.0/client_2
export PATH=$ORACLE_HOME/bin:$PATH

Verify the installation.

sqlplus -v

Example output:

SQL*Plus: Release 23.0.0.0.0 Production
Version 23.x.x.x.x

Verify Oracle Net.

lsnrctl version

Verify Data Pump.

expdp help=y

Verify RMAN.

rman target /

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Optional – Configure Environment Variables

Add the following to the Oracle user’s profile.

export ORACLE_BASE=/u01/app/oracle
export ORACLE_HOME=/u01/app/oracle/product/23.0.0/client_2
export PATH=$ORACLE_HOME/bin:$PATH
export LD_LIBRARY_PATH=$ORACLE_HOME/lib
export TNS_ADMIN=$ORACLE_HOME/network/admin

Reload the profile.

source ~/.bash_profile

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Configure Oracle Net

Create or copy the network configuration files into:

$ORACLE_HOME/network/admin

Common files include:

• tnsnames.ora
• listener.ora
• sqlnet.ora

Test connectivity.

tnsping ORCL

Connect to the database.

sqlplus system@ORCL

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Common Installation Issues

Display Error

Could not execute auto check for display colors.

Solution:

export DISPLAY=<hostname>:0.0
xhost +

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Missing Packages

Install required packages.

sudo dnf install oracle-database-preinstall-23ai

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Permission Issues

Ensure Oracle owns the installation directories.

chown -R oracle:oinstall /u01/app/oracle
chmod -R 775 /u01/app/oracle

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Insufficient Swap Space

Increase swap if prerequisite checks fail.

free -h
swapon --show

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Post-Installation Checklist

• Oracle Client installed successfully
• SQL*Plus verified
• RMAN verified
• Data Pump verified
• Oracle Net configured
• Environment variables configured
• TNS connectivity tested

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Conclusion

Installing the Oracle Database 23ai Client is a simple process when the operating system prerequisites are satisfied. The Administrator installation provides all essential tools required by DBAs, including SQL*Plus, RMAN, Data Pump, Oracle Net, and other utilities. After installation, verify the client binaries, configure Oracle Net, and test database connectivity to ensure the client environment is ready for production use.