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@nisshii0(Takayuki Nishio)

[26ai] 3コマンドで Oracle AI Database 26ai Free の インストール

Last updated at Posted at 2025-10-14

やれること

2025/10/14 Oracle AI World 2025当日にリリースされた Oracle Database 26ai Freeを最速インストール。
OCIのComputeでOracle Linux 8環境を作ったデフォルト状態からスタートします。

環境

・Oracle Linux 8 (OCI)
・Oracle Database 26ai Free

・作業するOSユーザ：root

手順で実施できること

・手順内で OSユーザ「oracle」が作成される
・Oracle AI DatabaseのS/Wがインストールされる。
・データベース「FREE」が作成される
・SQL*Plusが使えるようになる。

Oracle Database 26ai Free 環境の構築

0．26aiインストールファイルのダウンロード

今回はLinux8用の「oracle-ai-database-free-26ai-23.26.0-1.el8.x86_64.rpm」をダウンロードしました。
Computeの/tmpに配置します。
https://www.oracle.com/database/free/get-started/
image.png

1．26aiインストール1 (OSユーザ root で実行)####

＜実行コマンド＞

dnf install -y oracle-ai-database-preinstall-26ai　

＜実行例＞
★の部分が入力箇所です

★[root@nishi26ai ~]# dnf install -y oracle-ai-database-preinstall-26ai
Ksplice for Oracle Linux 8 (x86_64)              72 MB/s |  33 MB     00:00
MySQL 8.4 Server Community for Oracle Linux 8 (  21 MB/s | 1.2 MB     00:00
MySQL 8.4 Tools Community for Oracle Linux 8 (x  11 MB/s | 538 kB     00:00
MySQL Connectors Community for Oracle Linux 8 ( 932 kB/s |  48 kB     00:00
Oracle Software for OCI users on Oracle Linux 8  49 MB/s | 245 MB     00:04
Oracle Linux 8 BaseOS Latest (x86_64)            70 MB/s | 116 MB     00:01
Oracle Linux 8 Application Stream (x86_64)       71 MB/s |  73 MB     00:01
Oracle Linux 8 Addons (x86_64)                   12 MB/s |  49 MB     00:03
Latest Unbreakable Enterprise Kernel Release 7   79 MB/s |  77 MB     00:00
Dependencies resolved.
================================================================================
 Package                     Arch   Version                 Repository     Size
================================================================================
Installing:
 oracle-ai-database-preinstall-26ai
                             x86_64 1.0-1.el8               ol8_appstream  29 k
Installing dependencies:
 compat-openssl10            x86_64 1:1.0.2o-4.el8_10.1     ol8_appstream 1.1 M
 ksh                         x86_64 20120801-269.0.1.el8_10 ol8_appstream 924 k
 libICE                      x86_64 1.0.9-15.el8            ol8_appstream  74 k
 libSM                       x86_64 1.2.3-1.el8             ol8_appstream  47 k
 libX11-xcb                  x86_64 1.6.8-9.el8_10          ol8_appstream  14 k
 libXcomposite               x86_64 0.4.4-14.el8            ol8_appstream  28 k
 libXi                       x86_64 1.7.10-1.el8            ol8_appstream  49 k
 libXinerama                 x86_64 1.1.4-1.el8             ol8_appstream  15 k
 libXmu                      x86_64 1.1.3-1.el8             ol8_appstream  75 k
 libXrandr                   x86_64 1.5.2-1.el8             ol8_appstream  34 k
 libXt                       x86_64 1.1.5-12.el8            ol8_appstream 185 k
 libXtst                     x86_64 1.2.3-7.el8             ol8_appstream  22 k
 libXv                       x86_64 1.0.11-7.el8            ol8_appstream  20 k
 libXxf86dga                 x86_64 1.1.5-1.el8             ol8_appstream  26 k
 libXxf86misc                x86_64 1.0.4-1.el8             ol8_appstream  23 k
 libXxf86vm                  x86_64 1.1.4-9.el8             ol8_appstream  19 k
 libdmx                      x86_64 1.1.4-3.el8             ol8_appstream  22 k
 xorg-x11-utils              x86_64 7.5-28.el8              ol8_appstream 136 k
 xorg-x11-xauth              x86_64 1:1.0.9-12.el8          ol8_appstream  39 k

Transaction Summary
================================================================================
Install  20 Packages

Total download size: 2.9 M
Installed size: 7.9 M
Downloading Packages:
(1/20): libICE-1.0.9-15.el8.x86_64.rpm          3.0 MB/s |  74 kB     00:00
(2/20): libSM-1.2.3-1.el8.x86_64.rpm            7.1 MB/s |  47 kB     00:00
(3/20): libX11-xcb-1.6.8-9.el8_10.x86_64.rpm    2.8 MB/s |  14 kB     00:00
(4/20): compat-openssl10-1.0.2o-4.el8_10.1.x86_  26 MB/s | 1.1 MB     00:00
(5/20): libXcomposite-0.4.4-14.el8.x86_64.rpm   3.0 MB/s |  28 kB     00:00
(6/20): libXinerama-1.1.4-1.el8.x86_64.rpm      2.9 MB/s |  15 kB     00:00
(7/20): libXi-1.7.10-1.el8.x86_64.rpm           3.8 MB/s |  49 kB     00:00
(8/20): libXmu-1.1.3-1.el8.x86_64.rpm           8.8 MB/s |  75 kB     00:00
(9/20): libXrandr-1.5.2-1.el8.x86_64.rpm        3.1 MB/s |  34 kB     00:00
(10/20): libXt-1.1.5-12.el8.x86_64.rpm           13 MB/s | 185 kB     00:00
(11/20): libXtst-1.2.3-7.el8.x86_64.rpm         1.9 MB/s |  22 kB     00:00
(12/20): libXv-1.0.11-7.el8.x86_64.rpm          2.7 MB/s |  20 kB     00:00
(13/20): libXxf86misc-1.0.4-1.el8.x86_64.rpm    3.4 MB/s |  23 kB     00:00
(14/20): libXxf86dga-1.1.5-1.el8.x86_64.rpm     1.8 MB/s |  26 kB     00:00
(15/20): libXxf86vm-1.1.4-9.el8.x86_64.rpm      2.5 MB/s |  19 kB     00:00
(16/20): libdmx-1.1.4-3.el8.x86_64.rpm          1.7 MB/s |  22 kB     00:00
(17/20): xorg-x11-utils-7.5-28.el8.x86_64.rpm   7.7 MB/s | 136 kB     00:00
(18/20): xorg-x11-xauth-1.0.9-12.el8.x86_64.rpm 3.4 MB/s |  39 kB     00:00
(19/20): ksh-20120801-269.0.1.el8_10.x86_64.rpm 5.5 MB/s | 924 kB     00:00
(20/20): oracle-ai-database-preinstall-26ai-1.0 353 kB/s |  29 kB     00:00
--------------------------------------------------------------------------------
Total                                            16 MB/s | 2.9 MB     00:00
Running transaction check
Transaction check succeeded.
Running transaction test
Transaction test succeeded.
Running transaction
  Preparing        :                                                        1/1
  Installing       : libXi-1.7.10-1.el8.x86_64                             1/20
  Installing       : libICE-1.0.9-15.el8.x86_64                            2/20
  Installing       : libSM-1.2.3-1.el8.x86_64                              3/20
  Installing       : libXt-1.1.5-12.el8.x86_64                             4/20
  Installing       : libXmu-1.1.3-1.el8.x86_64                             5/20
  Installing       : xorg-x11-xauth-1:1.0.9-12.el8.x86_64                  6/20
  Installing       : libXtst-1.2.3-7.el8.x86_64                            7/20
  Installing       : libdmx-1.1.4-3.el8.x86_64                             8/20
  Installing       : libXxf86vm-1.1.4-9.el8.x86_64                         9/20
  Installing       : libXxf86misc-1.0.4-1.el8.x86_64                      10/20
  Installing       : libXxf86dga-1.1.5-1.el8.x86_64                       11/20
  Installing       : libXv-1.0.11-7.el8.x86_64                            12/20
  Installing       : libXrandr-1.5.2-1.el8.x86_64                         13/20
  Installing       : libXinerama-1.1.4-1.el8.x86_64                       14/20
  Installing       : libXcomposite-0.4.4-14.el8.x86_64                    15/20
  Installing       : libX11-xcb-1.6.8-9.el8_10.x86_64                     16/20
  Installing       : xorg-x11-utils-7.5-28.el8.x86_64                     17/20
  Installing       : ksh-20120801-269.0.1.el8_10.x86_64                   18/20
  Running scriptlet: ksh-20120801-269.0.1.el8_10.x86_64                   18/20
  Installing       : compat-openssl10-1:1.0.2o-4.el8_10.1.x86_64          19/20
  Running scriptlet: compat-openssl10-1:1.0.2o-4.el8_10.1.x86_64          19/20
  Installing       : oracle-ai-database-preinstall-26ai-1.0-1.el8.x86_6   20/20
  Running scriptlet: oracle-ai-database-preinstall-26ai-1.0-1.el8.x86_6   20/20
  Verifying        : compat-openssl10-1:1.0.2o-4.el8_10.1.x86_64           1/20
  Verifying        : ksh-20120801-269.0.1.el8_10.x86_64                    2/20
  Verifying        : libICE-1.0.9-15.el8.x86_64                            3/20
  Verifying        : libSM-1.2.3-1.el8.x86_64                              4/20
  Verifying        : libX11-xcb-1.6.8-9.el8_10.x86_64                      5/20
  Verifying        : libXcomposite-0.4.4-14.el8.x86_64                     6/20
  Verifying        : libXi-1.7.10-1.el8.x86_64                             7/20
  Verifying        : libXinerama-1.1.4-1.el8.x86_64                        8/20
  Verifying        : libXmu-1.1.3-1.el8.x86_64                             9/20
  Verifying        : libXrandr-1.5.2-1.el8.x86_64                         10/20
  Verifying        : libXt-1.1.5-12.el8.x86_64                            11/20
  Verifying        : libXtst-1.2.3-7.el8.x86_64                           12/20
  Verifying        : libXv-1.0.11-7.el8.x86_64                            13/20
  Verifying        : libXxf86dga-1.1.5-1.el8.x86_64                       14/20
  Verifying        : libXxf86misc-1.0.4-1.el8.x86_64                      15/20
  Verifying        : libXxf86vm-1.1.4-9.el8.x86_64                        16/20
  Verifying        : libdmx-1.1.4-3.el8.x86_64                            17/20
  Verifying        : oracle-ai-database-preinstall-26ai-1.0-1.el8.x86_6   18/20
  Verifying        : xorg-x11-utils-7.5-28.el8.x86_64                     19/20
  Verifying        : xorg-x11-xauth-1:1.0.9-12.el8.x86_64                 20/20

Installed:
  compat-openssl10-1:1.0.2o-4.el8_10.1.x86_64
  ksh-20120801-269.0.1.el8_10.x86_64
  libICE-1.0.9-15.el8.x86_64
  libSM-1.2.3-1.el8.x86_64
  libX11-xcb-1.6.8-9.el8_10.x86_64
  libXcomposite-0.4.4-14.el8.x86_64
  libXi-1.7.10-1.el8.x86_64
  libXinerama-1.1.4-1.el8.x86_64
  libXmu-1.1.3-1.el8.x86_64
  libXrandr-1.5.2-1.el8.x86_64
  libXt-1.1.5-12.el8.x86_64
  libXtst-1.2.3-7.el8.x86_64
  libXv-1.0.11-7.el8.x86_64
  libXxf86dga-1.1.5-1.el8.x86_64
  libXxf86misc-1.0.4-1.el8.x86_64
  libXxf86vm-1.1.4-9.el8.x86_64
  libdmx-1.1.4-3.el8.x86_64
  oracle-ai-database-preinstall-26ai-1.0-1.el8.x86_64
  xorg-x11-utils-7.5-28.el8.x86_64
  xorg-x11-xauth-1:1.0.9-12.el8.x86_64

Complete!
[root@nishi26ai ~]#

2．26aiインストール2 (OSユーザ root で実行)####

＜実行コマンド＞

dnf -y localinstall /tmp/oracle-ai-database-free-26ai-23.26.0-1.el8.x86_64.rpm　

＜実行例＞
★の部分が入力箇所です

★[root@nishi26ai ~]# dnf -y localinstall /tmp/oracle-ai-database-free-26ai-23.26.0-1.el8.x86_64.rpm
Last metadata expiration check: 0:53:08 ago on Tue 14 Oct 2025 04:25:26 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

Complete!
[root@nishi26ai ~]#

3．26aiデータベース・リスナー作成 (OSユーザ root で実行)

＜実行コマンド＞

/etc/init.d/oracle-free-26ai configure
※ 実行するとSYSユーザのパスワード入力が求められるので、入力します。8文字以上数字必要

＜実行例＞
★の部分が入力箇所です


★[root@nishi26ai ~]# /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:★パスワード入力
Confirm the password:★パスワード確認入力
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.

これで完成です！

使いやすくするための設定

＜構築されたDB＞
OSユーザ：oracle
インストールパス(ORACLE_HOME)：/opt/oracle/product/26ai/dbhomeFree/
SID：FREE

OSユーザ oracle の設定

OSユーザの環境変数に設定するのがおすすめです

--★/home/oracle/.bash_profileに以下を設定
export ORACLE_BASE=/opt/oracle
export ORACLE_HOME=/opt/oracle/product/26ai/dbhomeFree
export ORACLE_SID=FREE
export NLS_LANG=Japanese_Japan.AL32UTF8
export PATH=$ORACLE_HOME/bin:$PATH

作られた環境の確認

＜実行するコマンド＞
環境確認をしてみます

sqlplus / as sysdba
show parameter instance_name
show pdbs
alter session set container=FREEPDB1;
select username from dba_users order by 1;
exit

実行例
--★SQL*Plusで接続します。26aiは23.26と表現されるみたいです。

[oracle@nishi26ai ~]$ sqlplus / as sysdba

SQL*Plus: Release 23.26.0.0.0 - Production on 火 10月 14 17:34:21 2025
Version 23.26.0.0.0

Copyright (c) 1982, 2025, Oracle.  All rights reserved.



Oracle AI Database 26ai Free Release 23.26.0.0.0 - Develop, Learn, and Run for Free
Version 23.26.0.0.0
に接続されました。


--★インスタンス名を確認します（FREEです）
SQL> show parameter instance_name

NAME                                 TYPE        VALUE
------------------------------------ ----------- ------------------------------
instance_name                        string      FREE


--★作成されているPDBを確認します（FREEPDB1があります）
SQL> show pdbs

    CON_ID CON_NAME                       OPEN MODE  RESTRICTED
---------- ------------------------------ ---------- ----------
         2 PDB$SEED                       READ ONLY  NO
         3 FREEPDB1                       READ WRITE NO

         
--★FREEPDB1に接続します
SQL> alter session set container=FREEPDB1;

セッションが変更されました。

--★DBユーザを確認します（初期ユーザのみでサンプルデータはない）


SQL> select username from dba_users order by 1;

USERNAME
--------------------------------------------------------------------------------
ANONYMOUS
APPQOSSYS
AUDSYS
BAASSYS
CTXSYS
DBSFWUSER
DBSNMP
DGPDB_INT
DIP
DVF
DVSYS

USERNAME
--------------------------------------------------------------------------------
GGSHAREDCAP
GGSYS
GSMADMIN_INTERNAL
GSMCATUSER
GSMUSER
LBACSYS
MDDATA
MDSYS
OJVMSYS
OLAPSYS
OUTLN

USERNAME
--------------------------------------------------------------------------------
PDBADMIN
REMOTE_SCHEDULER_AGENT
SYS
SYS$UMF
SYSBACKUP
SYSDG
SYSKM
SYSRAC
SYSTEM
VECSYS
WMSYS

USERNAME
--------------------------------------------------------------------------------
XDB
XS$NULL

35行が選択されました。

SQL> exit
Oracle AI Database 26ai Free Release 23.26.0.0.0 - Develop, Learn, and Run for Free
Version 23.26.0.0.0との接続が切断されました。
[oracle@nishi26ai ~]$
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