Oracle Database 26AI Free edition installation in Linux server

Oracle Database 26ai has come up with below editions

On-premise editions:

Oracle AI Database Free
Standard Edition 2 on Oracle Database Appliance
Enterprise Edition on Engineered Systems

OCI editions:

Oracle Base Database Service Standard Edition
Oracle Base Database Service Enterprise Edition
Oracle Base Database Service Enterprise Edition - High Performance
Oracle Base Database Service Enterprise Edition - Extreme Performance
Oracle Exadata Database Service on Dedicated Infrastructure
Oracle Exadata Database Service on Cloud@Customer

The FREE edition has come up with many features. It allows to create upto 16pdbs. However Dataguard and RAC are not available. We can get more details of this edition from https://docs.oracle.com/en/database/oracle/oracle-database/26/dblic/Licensing-Information.html

The following development platforms are not included with Oracle AI Database Free. We can download them separately and use them with Oracle AI Database Free:

Oracle APEX
Oracle Developer Tools for Visual Studio
Oracle REST Data Services (ORDS)
Oracle SQL Developer

Operating system users and groups can be created manually or it can be created by executing preinstall package.

Manual creation of operating system users:

[root@database26ai ~]# grep -i oinstall /etc/group

[root@database26ai ~]# groupadd -g 201 oinstall

[root@database26ai ~]# groupadd -g 202 oracle

[root@database26ai ~]# useradd -g oinstall -G oracle -d /home/oracle oracle

[root@database26ai ~]# cd /home/oracle

[root@database26ai oracle]# mkdir .ssh

Copy the ssh key of opc to oracle to allow direct ssh login to oracle user.

[root@database26ai oracle]# cp /home/opc/.ssh/authorized_keys .ssh/

drwx------. 3 opc opc 74 Nov 1 22:10 opc

drwxr-xr-x. 3 root root 18 Nov 1 22:17 oracle

[root@database26ai home]# chown -R oracle:oinstall oracle

In Oracle linux we can directly invoke preinstall package command.

[root@database26ai home]# dnf install oracle-ai-database-preinstall-26ai

Ksplice for Oracle Linux 9 (x86_64)                                                                                                                           62 MB/s | 13 MB     00:00

Oracle Linux 9 OCI Included Packages (x86_64)                                                                                                                 48 MB/s | 193 MB     00:03

Oracle Linux 9 BaseOS Latest (x86_64)                                                                                                                         81 MB/s | 91 MB     00:01

Oracle Linux 9 Application Stream Packages (x86_64)                                                                                                           98 MB/s | 72 MB     00:00

Oracle Linux 9 Addons (x86_64)                                                                                                                                11 MB/s | 735 kB     00:00

Oracle Linux 9 UEK Release 8 (x86_64)                                                                                                                        9.1 MB/s | 19 MB     00:02

Dependencies resolved.

=============================================================================================================================================================================================

Package                                                     Architecture                    Version                                        Repository                                  Size

=============================================================================================================================================================================================

Installing:

oracle-ai-database-preinstall-26ai                          x86_64                          1.0-1.el9                                      ol9_appstream                               34 k

.

.

.

compat-openssl11                                            x86_64                          1:1.1.1k-5.el9_6.1

                             ol9_appstream                              541 k

xorg-x11-utils                                              x86_64                          7.5-40.el9                                     ol9_appstream                              123 k

xorg-x11-xauth                                              x86_64                          1:1.1-10.el9                                   ol9_appstream                               36 k

Transaction Summary

=============================================================================================================================================================================================

Install 22 Packages

Total download size: 3.9 M

Installed size: 11 M

Is this ok [y/N]: y

Downloading Packages:

(1/22): ksh-1.0.6-7.0.1.el9_6.1.x86_64.rpm                                                                                                                   5.8 MB/s | 889 kB     00:00

(2/22): compat-openssl11-1.1.1k-5.el9_6.1.x86_64.rpm                                                                                                         8.9 MB/s | 1.5 MB     00:00

.

.

.

(22/22): oracle-ai-database-preinstall-26ai-1.0-1.el9.x86_64.rpm                                                                                             442 kB/s | 34 kB     00:00

---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

Total                                                                                                                                                         12 MB/s | 3.9 MB     00:00

Running transaction check

Transaction check succeeded.

Running transaction test

Transaction test succeeded.

Running transaction

Preparing        :                                                                                                                                                                     1/1

Installing       : libXi-1.7.10-8.el9.x86_64                                                                                                                                          1/22

Installing       : libICE-1.0.10-8.el9.x86_64 .

.

Running scriptlet: initscripts-10.11.8-4.0.1.el9.x86_64                                                                                                                              21/22

Created symlink /etc/systemd/system/sysinit.target.wants/import-state.service → /usr/lib/systemd/system/import-state.service.

Created symlink /etc/systemd/system/sysinit.target.wants/loadmodules.service → /usr/lib/systemd/system/loadmodules.service.

Installing       : oracle-ai-database-preinstall-26ai-1.0-1.el9.x86_64                                                                                                               22/22

Running scriptlet: oracle-ai-database-preinstall-26ai-1.0-1.el9.x86_64                                                                                                               22/22

Verifying        : initscripts-10.11.8-4.0.1.el9.x86_64                                                                                                                               1/22

Verifying        : compat-openssl11-1:1.1.1k-5.el9_6.1.x86_64                                                                                                                         2/22

Verifying        : ksh-3:1.0.6-7.0.1.el9_6.1.x86_64                                                                                                                                   .

.

.

Installed:

compat-openssl11-1:1.1.1k-5.el9_6.1.x86_64       initscripts-10.11.8-4.0.1.el9.x86_64       ksh-3:1.0.6-7.0.1.el9_6.1.x86_64                          libICE-1.0.10-8.el9.x86_64

libSM-1.2.3-10.el9.x86_64                        libX11-xcb-1.7.0-11.el9.x86_64             libXcomposite-0.4.5-7.el9.x86_64                          libXi-1.7.10-8.el9.x86_64

libXinerama-1.1.4-10.el9.x86_64                  libXmu-1.1.3-8.el9.x86_64                  libXrandr-1.5.2-8.el9.x86_64                              libXt-1.2.0-6.el9.x86_64

libXtst-1.2.3-16.el9.x86_64                      libXv-1.0.11-16.el9.x86_64                 libXxf86dga-1.1.5-8.el9.x86_64                            libXxf86vm-1.1.4-18.el9.x86_64

libdmx-1.1.4-12.el9.x86_64                       lm_sensors-libs-3.6.0-10.el9.x86_64        oracle-ai-database-preinstall-26ai-1.0-1.el9.x86_64       sysstat-12.5.4-9.0.2.el9.x86_64

xorg-x11-utils-7.5-40.el9.x86_64                 xorg-x11-xauth-1:1.1-10.el9.x86_64

Complete!

The installation log can be viewed at /var/log/oracle-ai-database-preinstall-26ai/backup/<Date>/orakernel.log

[root@database26ai home]# ls -lrt /var/log/oracle-ai-database-preinstall-26ai/backup/Nov-01-2025-22-20-34/orakernel.log

-rw-r--r--. 1 root root 9780 Nov 1 22:20 /var/log/oracle-ai-database-preinstall-26ai/backup/Nov-01-2025-22-20-34/orakernel.log

Download the 26ai Database rpm in the Linux server.

[oracle@database26ai ~]$ wget https://download.oracle.com/otn-pub/otn_software/db-free/oracle-ai-database-free-26ai-23.26.0-1.el9.x86_64.rpm?AuthParam=1762036803_f09ff4b8afe93cbce77e64c537288c8d

--2025-11-01 22:38:25-- https://download.oracle.com/otn-pub/otn_software/db-free/oracle-ai-database-free-26ai-23.26.0-1.el9.x86_64.rpm?AuthParam=1762036803_f09ff4b8afe93cbce77e64c537288c8d

Resolving download.oracle.com (download.oracle.com)... 23.222.200.112

Connecting to download.oracle.com (download.oracle.com)|23.222.200.112|:443... connected.

HTTP request sent, awaiting response... 200 OK

Length: 1431761556 (1.3G) [application/x-redhat-package-manager]

Saving to: ‘oracle-ai-database-free-26ai-23.26.0-1.el9.x86_64.rpm?AuthParam=1762036803_f09ff4b8afe93cbce77e64c537288c8d’

oracle-ai-database-free-26ai-23.26.0-1.el9.x86_ 100%[====================================================================================================>] 1.33G 114MB/s in 11s

2025-11-01 22:38:37 (119 MB/s) - ‘oracle-ai-database-free-26ai-23.26.0-1.el9.x86_64.rpm?AuthParam=1762036803_f09ff4b8afe93cbce77e64c537288c8d’ saved [1431761556/1431761556]

Install the downloaded RPM. It perform 26ai database software installation. By default the ORACLE_HOME : /opt/oracle/product/26ai/dbhomeFree/
ORACLE_BASE : /opt/oracle

[root@database26ai oracle]# dnf -y install oracle-ai-database-free-26ai-23.26.0-1.el9.x86_64.rpm

Last metadata expiration check: 3:17:40 ago on Sat 01 Nov 2025 10:54:34 PM GMT.

Dependencies resolved.

=============================================================================================================================================================================================

Package                                                    Architecture                         Version                                    Repository                                  Size

=============================================================================================================================================================================================

Installing:

oracle-ai-database-free-26ai                               x86_64                               23.26.0-1                                  @commandline                               1.3 G

Transaction Summary

=============================================================================================================================================================================================

Install 1 Package

Total size: 1.3 G

Installed size: 3.6 G

Downloading Packages:

Running transaction check

Transaction check succeeded.

Running transaction test

Transaction test succeeded.

Running transaction

Preparing        :                                                                                                                                                                     1/1

Running scriptlet: oracle-ai-database-free-26ai-23.26.0-1.x86_64                                                                                                                       1/1

Installing       : oracle-ai-database-free-26ai-23.26.0-1.x86_64                                                                                                                       1/1

Running scriptlet: oracle-ai-database-free-26ai-23.26.0-1.x86_64                                                                                                                       1/1

[INFO] Executing post installation scripts...

[INFO] Oracle home installed successfully and ready to be configured.

To configure Oracle AI Database Free, optionally modify the parameters in '/etc/sysconfig/oracle-free-26ai.conf' and then run '/etc/init.d/oracle-free-26ai configure' as root.

Verifying        : oracle-ai-database-free-26ai-23.26.0-1.x86_64                                                                                                                       1/1

Installed:

oracle-ai-database-free-26ai-23.26.0-1.x86_64

Configure the database. It collect sys and system user passwords and configures a new database. The Oracle database files will be located at /opt/oracle/oradata/FREE

[root@database26ai oracle]# /etc/init.d/oracle-free-26ai configure

Specify a password to be used for database accounts. Oracle recommends that the password entered should be at least 8 characters in length, contain at least 1 uppercase character, 1 lower case character and 1 digit [0-9]. Note that the same password will be used for SYS, SYSTEM and PDBADMIN accounts:

Confirm the password:

Configuring Oracle Listener.

Listener configuration succeeded.

Configuring Oracle AI Database FREE.                                                                                                                                                        Enter SYS user password:

****************

Enter SYSTEM user password:

*************

Enter PDBADMIN User Password:

*************

Prepare for db operation

7% complete

Copying database files

29% complete

Creating and starting Oracle instance

30% complete

33% complete

36% complete

39% complete

43% complete

Completing Database Creation

47% complete

49% complete

50% complete

Creating Pluggable Databases

54% complete

71% complete

Executing Post Configuration Actions

93% complete

Running Custom Scripts

100% complete

Database creation complete. For details check the logfiles at:

/opt/oracle/cfgtoollogs/dbca/FREE.

Database Information:

Global Database Name:FREE

System Identifier(SID):FREE

Look at the log file "/opt/oracle/cfgtoollogs/dbca/FREE/FREE.log" for further details.

Connect to Oracle AI Database using one of the connect strings:

     Pluggable database: database26ai/FREEPDB1

     Multitenant container database: database26ai

[oracle@database26ai FREE]$ ps -ef | grep pmon

oracle 62187 1 0 Nov02 ? 00:00:22 db_pmon_FREE

oracle 235321 235132 0 18:04 pts/0 00:00:00 grep --color=auto pmon

[oracle@database26ai FREE]$ export ORACLE_SID=FREE

[oracle@database26ai FREE]$ sqlplus "/ as sysdba"

SQL*Plus: Release 23.26.0.0.0 - Production on Tue Nov 4 18:04:55 2025

Version 23.26.0.0.0

Connected to:

Oracle AI Database 26ai Free Release 23.26.0.0.0 - Develop, Learn, and Run for Free

Version 23.26.0.0.0

SQL> select * from v$version;

BANNER

BANNER_FULL

BANNER_LEG

CON_ID

Oracle AI Database 26ai Free Release 23.26.0.0.0 - Develop, Learn, and Run for Free

Oracle AI Database 26ai Free Release 23.26.0.0.0 - Develop, Learn, and Run for

Free Version 23.26.0.0.0

Oracle AI Database 26ai Free Release 23.26.0.0.0 -Develop, Learn, and

Run for Free

SQL> show pdbs

CON_ID CON_NAME OPEN MODE RESTRICTED

---------- ------------------------------ ---------- ----------

2 PDB$SEED READ ONLY NO

3 FREEPDB1 READ WRITE NO

SQL> select comp_name, version from dba_registry ;

COMP_NAME VERSION

---------------------------------------- ------------------------------

Oracle Database Catalog Views 23.0.0.0.0

Oracle Database Packages and Types 23.0.0.0.0

Oracle Real Application Clusters 23.0.0.0.0

JServer JAVA Virtual Machine 23.0.0.0.0

Oracle XDK 23.0.0.0.0

Oracle Database Java Packages 23.0.0.0.0

OLAP Analytic Workspace 23.0.0.0.0

Oracle XML Database 23.0.0.0.0

Oracle Workspace Manager 23.0.0.0.0

Oracle Text 23.0.0.0.0

Oracle OLAP API 23.0.0.0.0

COMP_NAME VERSION

---------------------------------------- ------------------------------

Spatial 23.0.0.0.0

Oracle Label Security 23.0.0.0.0

Oracle Database Vault 23.0.0.0.0

14 rows selected.

[oracle@database26ai OPatch]$ ./opatch version

OPatch Version: 12.2.0.1.47

OPatch succeeded.

[oracle@database26ai OPatch]$ ./opatch lsinventory

Oracle Interim Patch Installer version 12.2.0.1.47

Oracle Home : /opt/oracle/product/26ai/dbhomeFree

Central Inventory : /opt/oracle/oraInventory

from : /opt/oracle/product/26ai/dbhomeFree/oraInst.loc

OPatch version : 12.2.0.1.47

OUI version : 12.2.0.9.0

Log file location : /opt/oracle/product/26ai/dbhomeFree/cfgtoollogs/opatch/opatch2025-11-04_18-07-26PM_1.log

Lsinventory Output file location : /opt/oracle/product/26ai/dbhomeFree/cfgtoollogs/opatch/lsinv/lsinventory2025-11-04_18-07-26PM.txt

--------------------------------------------------------------------------------

Local Machine Information::

Hostname: database26ai.publicsubnet.tfvcn.oraclevcn.com

ARU platform id: 226

ARU platform description:: Linux x86-64

Installed Top-level Products (1):

Oracle Database 26ai 23.0.0.0.0

There are 1 products installed in this Oracle Home.

CLID: O

There are no Interim patches installed in this Oracle Home.

--------------------------------------------------------------------------------

OPatch succeeded.

CloudZen

Tuesday, November 4, 2025

Oracle Database 26AI Free edition installation in Linux server

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