In this post I will describe the installation of Oracle
Database 26ai 64-bit on Oracle Linux 9 (OL8) 64-bit. The installation requires
a minimum of 2g swap memory and secure Linux set to permissive or disabled.
Add hosts entry in hosts file
[root@dbvm-1 opc]# cat
/etc/hosts
127.0.0.1 localhost localhost.localdomain localhost4
localhost4.localdomain4
::1 localhost localhost.localdomain
localhost6 localhost6.localdomain6
10.0.0.45
dbvm-1.subnet09221504.vcn09221504.oraclevcn.com dbvm-1
Download
the RPM for oracle installation:-
The
required rpm can be downloaded directly from oracle website
https://www.oracle.com/database/free/get-started/
Rpm url : oracle-ai-database-preinstall-26ai-1.0-1.el9.x86_64.rpm
Download
the rpm as root user
|
[root@dbvm-1 opc]# wget https://yum.oracle.com/repo/OracleLinux/OL9/appstream/x86_64/getPackage/oracle-ai-database-preinstall-26ai-1.0-1.el9.x86_64.rpm
|
|
[root@dbvm-1 opc]# dnf install
-y oracle-ai-database-preinstall-26ai
Last metadata expiration check:
0:04:32 ago on Sat 06 Jun 2026 06:11:34 AM GMT. Dependencies resolved. ============================================================================================================================================================================================== Package
Architecture
Version
Repository Size ============================================================================================================================================================================================== Installing: oracle-ai-database-preinstall-26ai x86_64 1.0-1.el9
ol9_appstream 34 k
Transaction Summary ============================================================================================================================================================================================== Install 1 Package
Total download size: 34 k Installed size: 81 k Downloading Packages: oracle-ai-database-preinstall-26ai-1.0-1.el9.x86_64.rpm
416 kB/s | 34 kB 00:00 ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Total
407 kB/s | 34 kB 00:00 Running transaction check Transaction check succeeded. Running transaction test Transaction test succeeded. Running transaction
Preparing :
1/1
Installing :
oracle-ai-database-preinstall-26ai-1.0-1.el9.x86_64
1/1
Running scriptlet:
oracle-ai-database-preinstall-26ai-1.0-1.el9.x86_64
1/1
Verifying :
oracle-ai-database-preinstall-26ai-1.0-1.el9.x86_64
1/1
Installed:
oracle-ai-database-preinstall-26ai-1.0-1.el9.x86_64
Complete! [root@dbvm-1 opc]# dnf
install -y oracle-ai-database-preinstall-26ai
Last metadata expiration check:
0:04:32 ago on Sat 06 Jun 2026 06:11:34 AM GMT. Dependencies resolved. ============================================================================================================================================================================================== Package
Architecture
Version
Repository Size ============================================================================================================================================================================================== Installing: oracle-ai-database-preinstall-26ai x86_64 1.0-1.el9
ol9_appstream 34 k
Transaction Summary ============================================================================================================================================================================================== Install 1 Package
Total download size: 34 k Installed size: 81 k Downloading Packages: oracle-ai-database-preinstall-26ai-1.0-1.el9.x86_64.rpm
416 kB/s | 34 kB 00:00 ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Total
407 kB/s | 34 kB 00:00 Running transaction check Transaction check succeeded. Running transaction test Transaction test succeeded. Running transaction
Preparing :
1/1
Installing :
oracle-ai-database-preinstall-26ai-1.0-1.el9.x86_64
1/1
Running scriptlet:
oracle-ai-database-preinstall-26ai-1.0-1.el9.x86_64
1/1
Verifying :
oracle-ai-database-preinstall-26ai-1.0-1.el9.x86_64
1/1
Installed:
oracle-ai-database-preinstall-26ai-1.0-1.el9.x86_64
Complete! |
Now Download
and install the 26ai binary as root user
|
[root@dbvm-1 opc]# wget
https://download.oracle.com/otn-pub/otn_software/db-free/oracle-ai-database-free-26ai-23.26.2-1.el9.x86_64.rpm |
|
[root@dbvm-1 opc]# dnf -y
install
oracle-ai-database-free-26ai-23.26.2-1.el9.x86_64.rpm Last metadata expiration check:
0:37:25 ago on Sat 06 Jun 2026 06:11:34 AM GMT. Dependencies resolved. ============================================================================================================================================================================================== Package
Architecture
Version
Repository Size ============================================================================================================================================================================================== Installing: oracle-ai-database-free-26ai x86_64
23.26.2-1
@commandline 1.4 G Transaction Summary ============================================================================================================================================================================================== Install 1 Package Total size: 1.4 G Installed size: 3.8 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-23.26.2-1.x86_64
1/1
Installing :
oracle-ai-database-free-26ai-23.26.2-1.x86_64
1/1
Running scriptlet: oracle-ai-database-free-26ai-23.26.2-1.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-23.26.2-1.x86_64
1/1 Installed:
oracle-ai-database-free-26ai-23.26.2-1.x86_64 Complete! |
ORACLE_HOME
for 26ai oracle binary is /opt/oracle/product/26ai/dbhomeFree
Database creation:-
|
[root@dbvm-1 opc]#
/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: dbvm-1/FREEPDB1 Multitenant container database: dbvm-1 |
Note: Database
creation is still possible like old ways we have been doing so far.
Following screenshot shows how to create the database manually.
[root@dbvm-1 opc]#dbca |
To connect
the database:-
|
[oracle@dbvm-1 ~]$ sqlplus
sys@//localhost:1521/free as sysdba
SQL> show pdbs
CON_ID CON_NAME
OPEN MODE RESTRICTED ----------
------------------------------ ---------- ---------- 2 PDB$SEED READ ONLY NO 3 FREEPDB1 READ WRITE NO
[oracle@dbvm-1 ~]$ sqlplus
sys@//localhost:1521/freepdb1 as sysdba SQL> show con_name CON_NAME ------------------------------ FREEPDB1 |
To Start
and stop database:-
|
[root@dbvm-1 sshd_config.d]#
/etc/init.d/oracle-free-26ai stop Shutting down Oracle AI Database
instance FREE. Oracle AI Database instance FREE
shut down. Stopping Oracle Net Listener. Oracle Net Listener stopped.
[root@dbvm-1 sshd_config.d]#
/etc/init.d/oracle-free-26ai start Starting Oracle Net Listener. Oracle Net Listener started. Starting Oracle AI Database
instance FREE. Oracle AI Database instance FREE
started. |
