Install Oracle AI Database 26ai (23.26.1) for Linux x86-64
Pre-requisites already been taken care like memory, swap, kernel parameters, add groups, profile and users…etc
Table of Contents
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1. Hardware Requirements
2. Verify OS version
3. Download 19c db software
4. Oracle Installation Prerequisites
5. Unzip
6. Invoke ./runInstaller
7. Verify
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The first thing we need to verify the hardware requirements — Check Physical RAM. [root@lxicborasgv01 ~]# grep MemTotal /proc/meminfo MemTotal: 17516840 kB [root@lxicborasgv01 ~]# — Check Swap Space. [root@lxicborasgv01 ~]# grep SwapTotal /proc/meminfo SwapTotal: 8253436 kB [root@lxicborasgv01 ~]# -– Check space available in /tmp [root@lxicborasgv01 ~]# df -h /tmp Filesystem Size Used Avail Use% Mounted on /dev/mapper/ol_10-root 62G 7.2G 54G 12% / [root@lxicborasgv01 ~]# -– Check space for Oracle Software and pre-configured database. [root@lxicborasgv01 ~]# df -h /u01 Filesystem Size Used Avail Use% Mounted on /dev/mapper/ol_10-home 30G 246M 30G 1% /u01 [root@lxicborasgv01 ~]# —- Check CPU [root@lxicborasgv01 ~]# lscpu | grep -i "CPU(s):" | head -n 1 CPU(s): 4 [root@lxicborasgv01 ~]#
[root@lxicborasgv01 ~]# cat /etc/redhat-release Red Hat Enterprise Linux release 9.6 (Plow) [root@lxicborasgv01 ~]# [root@lxicborasgv01 ~]# cat /etc/hosts | grep -i lxicborasgv01 192.168.2.52 lxicborasgv01 [root@lxicborasgv01 ~]#
Download the Oracle software from OTN or MY ORACLE SUPPORT (MOS). https://www.oracle.com/database/technologies/oracle26ai-linux-downloads.html
4. Oracle Installation Prerequisites
[root@lxicborasgv01 ~]# dnf install -y oracle-ai-database-preinstall-26ai Last metadata expiration check: 0:44:40 ago on Wed 28 Jan 2026 06:14:51 PM. Dependencies resolved. ============================================================================================================================================================================================================== Package Architecture Version Repository Size ============================================================================================================================================================================================================== Installing: oracle-ai-database-preinstall-26ai x86_64 1.0-1.el9 ol9_appstream 34 k Installing dependencies: compat-openssl11 x86_64 1:1.1.1k-5.el9_6.1 ol9_appstream 1.5 M Transaction Summary ============================================================================================================================================================================================================== Install 2 Packages Total download size: 1.5 M Installed size: 3.8 M Downloading Packages: (1/2): oracle-ai-database-preinstall-26ai-1.0-1.el9.x86_64.rpm 295 kB/s | 34 kB 00:00 (2/2): compat-openssl11-1.1.1k-5.el9_6.1.x86_64.rpm 3.4 MB/s | 1.5 MB 00:00 -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Total 3.4 MB/s | 1.5 MB 00:00 Running transaction check Transaction check succeeded. Running transaction test Transaction test succeeded. Running transaction Preparing : 1/1 Installing : compat-openssl11-1:1.1.1k-5.el9_6.1.x86_64 1/2 Installing : oracle-ai-database-preinstall-26ai-1.0-1.el9.x86_64 2/2 Running scriptlet: oracle-ai-database-preinstall-26ai-1.0-1.el9.x86_64 2/2 Verifying : compat-openssl11-1:1.1.1k-5.el9_6.1.x86_64 1/2 Verifying : oracle-ai-database-preinstall-26ai-1.0-1.el9.x86_64 2/2 Installed: compat-openssl11-1:1.1.1k-5.el9_6.1.x86_64 oracle-ai-database-preinstall-26ai-1.0-1.el9.x86_64 Complete! [root@lxicborasgv01 ~]# [root@lxicborasgv01 ~]# id oracle uid=54321(oracle) gid=54321(oinstall) groups=54321(oinstall),54322(dba),54323(oper),54324(backupdba),54325(dgdba),54326(kmdba),54330(racdba) [root@lxicborasgv01 ~]#
NOTE: During installation using OUI, you cannot manually edit the Oracle Home location. The installer automatically detects the ORACLE_HOME from the directory where the database binaries are unzipped. Therefore, make sure to unzip the binaries directly inside the intended ORACLE_HOME directory before running ./runInstaller. Also note that after unzipping, the files will not be placed under a single directory as in Oracle 10g, 11g, and 12c. [root@lxicborasgv01 ~]# mkdir -p /u01/app/oracle/product/23.26.1/dbhome_1 [root@lxicborasgv01 ~]# chown -R oracle:oinstall /u01 [root@lxicborasgv01 ~]# chmod -R 775 /u01 [root@lxicborasgv01 ~]# [root@lxicborasgv01 ~]# passwd oracle Changing password for user oracle. New password: BAD PASSWORD: The password is shorter than 8 characters Retype new password: passwd: all authentication tokens updated successfully. [root@lxicborasgv01 ~]# [oracle@lxicborasgv01 ~]$ cd /u01/app/oracle/product/23.26.1/dbhome_1/ [oracle@lxicborasgv01 dbhome_1]$ ls -ltr total 2349668 -rw-r--r--. 1 oracle oinstall 2406058543 Jan 28 12:25 LINUX.X64_2326100_db_home.zip [oracle@lxicborasgv01 dbhome_1]$ [oracle@lxicborasgv01 dbhome_1]$ unzip LINUX.X64_2326100_db_home.zip Archive: LINUX.X64_2326100_db_home.zip inflating: META-INF/MANIFEST.MF inflating: META-INF/ORACLE_C.SF inflating: META-INF/ORACLE_C.RSA creating: OPatch/ inflating: OPatch/README.txt creating: OPatch/auto/ .. .. rdbms/mesg/ocius.msg -> ./oraus.msg rdbms/mesg/ocizhs.msb -> orazhs.msb rdbms/mesg/ocizht.msb -> orazht.msb [oracle@lxicborasgv01 dbhome_1]$
Start the Oracle Universal Installer (OUI) by issuing the following command. [oracle@lxicborasgv01 ~]$ cd /u01/app/oracle/product/23.26.1/dbhome_1/ [oracle@lxicborasgv01 dbhome_1]$ ./runInstaller Launching Oracle AI Database Setup Wizard...
[root@lxicborasgv01 ~]# /u01/app/oraInventory/orainstRoot.sh Changing permissions of /u01/app/oraInventory. Adding read,write permissions for group. Removing read,write,execute permissions for world. Changing groupname of /u01/app/oraInventory to oinstall. The execution of the script is complete. [root@lxicborasgv01 ~]# [root@lxicborasgv01 ~]# /u01/app/oracle/product/23.26.1/dbhome_1/root.sh Performing root user operation. The following environment variables are set as: ORACLE_OWNER= oracle ORACLE_HOME= /u01/app/oracle/product/23.26.1/dbhome_1 Enter the full pathname of the local bin directory: [/usr/local/bin]: Copying dbhome to /usr/local/bin ... Copying oraenv to /usr/local/bin ... Copying coraenv to /usr/local/bin ... Creating /etc/oratab file... Entries will be added to the /etc/oratab file as needed by Database Configuration Assistant when a database is created Finished running generic part of root script. Now product-specific root actions will be performed. [root@lxicborasgv01 ~]#
[root@lxicborasgv01 ~]# 
[oracle@lxicborasgv01 ~]$ export ORACLE_HOME=/u01/app/oracle/product/23.26.1/dbhome_1 [oracle@lxicborasgv01 ~]$ export PATH=$ORACLE_HOME/bin:$PATH [oracle@lxicborasgv01 ~]$ which sqlplus /u01/app/oracle/product/23.26.1/dbhome_1/bin/sqlplus [oracle@lxicborasgv01 ~]$ [oracle@lxicborasgv01 ~]$ sqlplus /nolog SQL*Plus: Release 23.26.1.0.0 - Production on Wed Jan 28 21:15:21 2026 Version 23.26.1.0.0 Copyright (c) 1982, 2025, Oracle. All rights reserved. SQL>
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