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@plusultra(Noriyoshi Shinoda)

Oracle AI Database 26ai のインストールを試す

Last updated at Posted at 2025-10-15

Oracle AI Database 26ai とは？

　Oracle AI Database 26ai は次期長期サポート版 Oracle Database としてリリースされる予定のデータベースです。Oracle Database 23ai のオンプレミス版のリリースが遅れていましたが、一旦仕切り直して Oracle AI Database 26ai として生まれ変わるようです。Press Release によると Oracle Database 23ai に 2025/10 RU を適用することで Oracle AI Database 26ai に移行できます。
　

インストールの前準備

　本記事では Oracle Linux 9.6 上で動作する Oracle AI Database 26ai Free RPM 版のインストールを試します。インストールメディアは Oracle AI Database Free からダウンロードできます。以下のファイルをダウンロードします。

  • Oracle AI Database 26ai Pre-Intall = oracle-ai-database-preinstall-26ai-1.0-1.el8.x86_64.rpm
  • Oracle AI Database 26ai = oracle-ai-database-free-26ai-23.26.0-1.el9.x86_64.rpm

インストール手順

以下にインストール例を示します。

Pre-Install RPM のインストール

　Oracle AI Database 26ai をインストールする前に Pre-Install RPM をインストールします。この PRM は、カーネル・パラメーターの変更やインスタンス起動ユーザーの作成等の準備を行います。

Pre-Install RPM のインストール
# dnf -y install oracle-ai-database-preinstall-26ai
Last metadata expiration check: 0:10:20 ago on Wed 15 Oct 2025 05:53:49 PM JST.
Dependencies resolved.
=======================================================================
 Package                 Arch   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): compat-openssl11-1.1.1k-5.el9_6 6.5 MB/s | 1.5 MB     00:00
(2/2): oracle-ai-database-preinstall-2 106 kB/s |  34 kB     00:00
-----------------------------------------------------------------------
Total                                  4.5 MB/s | 1.5 MB     00:00
Oracle Linux 9 Application Stream Pack 6.1 MB/s | 6.2 kB     00:00
Importing GPG key 0x8D8B756F:
 Userid     : "Oracle Linux (release key 1) <secalert_us@oracle.com>"
 Fingerprint: 3E6D 826D 3FBA B389 C2F3 8E34 BC4D 06A0 8D8B 756F
 From       : /etc/pki/rpm-gpg/RPM-GPG-KEY-oracle
Key imported successfully
Importing GPG key 0x8B4EFBE6:
 Userid     : "Oracle Linux (backup key 1) <secalert_us@oracle.com>"
 Fingerprint: 9822 3175 9C74 6706 5D0C E9B2 A7DD 0708 8B4E FBE6
 From       : /etc/pki/rpm-gpg/RPM-GPG-KEY-oracle
Key imported successfully
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.el   2/2
  Running scriptlet: oracle-ai-database-preinstall-26ai-1.0-1.el   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.el   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!
#

Oracle AI Database 26ai のインストール

次に Oracle AI Database 26ai RPM パッケージのインストールを行います。

Oracle AI Database 26ai RPM のインストール
# dnf -y install oracle-ai-database-free-26ai-23.26.0-1.el9.x86_64.rpm
Last metadata expiration check: 0:12:11 ago on Wed 15 Oct 2025 05:53:49 PM JST.
Dependencies resolved.
=======================================================================
 Package                       Arch    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_   1/1
  Installing       : oracle-ai-database-free-26ai-23.26.0-1.x86_   1/1
  Running scriptlet: oracle-ai-database-free-26ai-23.26.0-1.x86_   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_   1/1

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

Complete!
#

　RPM のインストールが完了したら初期設定を行います。ここでは SYS / SYSTEM / PDBADMIN ユーザーの共通パスワードを入力する必要があります。

初期設定
# /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>>
Confirm the password: <<パスワード>>
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: ol96-1/FREEPDB1
     Multitenant container database: ol96-1

この時点でリスナーとインスタンスが起動して利用可能な状態になっています。

利用開始

Oracle Linux のデータベース管理ユーザーとして oracle が作成されています。環境変数の設定を行い、データベース・インスタンスに接続します。

oracle ユーザーの環境設定
# id oracle
uid=54321(oracle) gid=54321(oinstall) groups=54321(oinstall),54322(dba),54323(oper),54324(backupdba),54325(dgdba),54326(kmdba),54330(racdba)
# su - oracle
$ export ORACLE_SID=FREE
$ export ORAENV_ASK=NO
$ . /opt/oracle/product/26ai/dbhomeFree/bin/oraenv
The Oracle base has been set to /opt/oracle
$

Oracle AI Database に接続します。

Oracle AI Database に接続
$ sqlplus / as sysdba

SQL*Plus: Release 23.26.0.0.0 - Production on Wed Oct 15 18:27:18 2025
Version 23.26.0.0.0

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


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_LEGACY                                                                                                                         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                                                      0

Author: Noriyoshi Shinoda / Date: October 15, 2025

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