SecureAnyCloud
Deployment guide

Oracle DB 23ai Client

Overview

Oracle Database Client 23ai is the latest generation Oracle Client. It provides the tools and libraries you need to connect to and manage remote Oracle Database instances, including Oracle 23ai features such as AI vector search.

This SecureAnyCloud AMI from the AWS Marketplace runs Oracle Database Client 23ai on Linux. It includes SQL*Plus, Oracle Net and other client utilities, without a full database installation.

What you get:

  • Oracle Database Client 23ai installed at /u01
  • A dedicated oracle OS user with an environment script (setEnv.sh)
  • SQL*Plus for connecting to remote Oracle databases
  • An OS package update script that keeps the system current
  • AWS CLI v2 for AWS service integration
  • Systems Manager Agent (SSM) for remote management
  • CloudWatch Agent for monitoring
  • Latest security patches applied at build time
  • 24/7 SecureAnyCloud support with guaranteed 24 hour response SLA

Prerequisites

Before you launch this AMI, make sure you have:

  • An active AWS account
  • An active subscription to the Oracle DB 23ai Client listing on AWS Marketplace
  • An EC2 key pair for SSH access
  • The hostname, port and service name of the Oracle Database you want to connect to

Recommended instance type: t3.small (2 vCPU, 2 GB RAM) or larger.

The minimum requirements are 1 vCPU, 1 GB RAM and 20 GB of disk space.

1

Launch the AMI

  • Open the AWS Marketplace and search for "Oracle DB 23ai Client SecureAnyCloud".
  • Click Continue to Subscribe, accept the terms, then click Continue to Configuration.
  • Select your preferred Region and Software Version.
  • Click Continue to Launch.
  • Choose Launch through EC2 for full control over instance configuration.
  • Select your instance type (t3.small recommended).
  • Configure storage: 20 GB gp3 minimum.
  • Configure your Security Group with this inbound rule: Port 22 (TCP), source: your IP, for SSH access.

Select your EC2 key pair and launch the instance.

2

Connect via SSH

When your instance is running and has passed both status checks (2/2), connect with SSH:

ssh -i your-key.pem ec2-user@<public-ip-address>

To switch to the root user, run:

sudo su -

Important: Wait for the EC2 instance to reach 2/2 successful status checks before you connect. Early connection attempts can fail with permission denied errors while the instance is still initialising.

3

Switch to the Oracle User and Set Environment

The dedicated oracle OS user owns the Oracle Client software. Switch to this user and source the environment. Type the commands rather than copying and pasting them:

sudo su - oracle cd $HOME . ./setEnv.sh

The setEnv.sh script sets the Oracle environment variables that utilities such as sqlplus need.

4

Configure tnsnames.ora

Before you connect to a remote Oracle Database, create a tnsnames.ora configuration file. As the oracle user, run these commands with your target database details in place of the example values:

cd $HOME . ./setEnv.sh echo 'MY_DATABASE = (DESCRIPTION = (ADDRESS_LIST = (ADDRESS = (PROTOCOL = TCP)(HOST = YOUR_DB_HOSTNAME)(PORT = 1521)) ) (CONNECT_DATA = (SERVER = DEDICATED) (SERVICE_NAME = YOUR_SERVICE_NAME) ) ) ' > "$ORACLE_HOME/network/admin/tnsnames.ora"

Replace these values:

  • YOUR_DB_HOSTNAME with the IP address or DNS name of your Oracle Database server
  • 1521 with the port number, if it differs from the default
  • YOUR_SERVICE_NAME with the service name of the target database
5

Connect to a Remote Database via SQL*Plus

Set the Oracle environment variables, then connect to your remote database:

cd $HOME . ./setEnv.sh sqlplus 'system/password@(DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=your-db-host)(PORT=1521))(CONNECT_DATA=(SERVICE_NAME=your-service-name)))'

Replace system, password, your-db-host and your-service-name with your actual database connection details.

Expected output:

SQL*Plus: Release 23.x.x.x Production Copyright (c) 1982, 2014, Oracle. All rights reserved. Connected to: Oracle Database 23ai ... SQL>

Type EXIT to leave SQL*Plus.

Server Components

  • Oracle Client 23ai: version 23ai, installed at /u01

Note: The automatic OS package update script can update component versions on first boot.

Filesystem Layout

The image uses these mount points:

  • / (38 GB): root filesystem
  • /boot (2.0 GB): operating system kernel files
  • /u01 (20 GB): Oracle software installation directory

On Startup

An OS package update script runs on first boot to bring the image fully up to date. To disable it, remove the script and its crontab entry:

rm -f /stage/scripts/initial_boot_update.sh crontab -e
# Delete the following line, save and exit: @reboot /stage/scripts/initial_boot_update.sh

Troubleshooting

Cannot connect via SSH

  • Verify that the instance has reached 2/2 status checks in the EC2 console.
  • Confirm that your security group allows inbound TCP port 22 from your IP.
  • Make sure you are using the correct key pair and connecting as ec2-user.

SQL*Plus cannot connect to the remote database

  • Verify that the target database is running and accepting connections.
  • Check that the hostname, port and service name are correct.
  • Make sure the security group of the target database allows inbound port 1521 from this client instance.
  • Test network connectivity: telnet <db-host> 1521

ORA-12541: TNS:no listener

  • The target database listener is not running. Contact the database administrator.

ORA-12514: TNS:listener does not currently know of service

  • The service name in your connection string does not match the target database. Confirm the correct service name with the database administrator.

Security Recommendations

  • Restrict SSH access: allow port 22 only from trusted IP addresses.
  • Secure credentials: never store database passwords in plain text files.
  • Use Oracle Wallet: configure Oracle Wallet for secure credential storage.
  • Encrypt connections: configure Oracle Net Services to use SSL/TLS encryption.
  • Keep the system updated: apply OS security patches regularly.

Support

If you run into any issues with this product, contact SecureAnyCloud support:

  • Email: sales@secureanycloud.com
  • Website: secureanycloud.com
  • Support hours: 24/7 with guaranteed 24 hour response SLA

Deploy on AWS

Launch Oracle DB 23ai Client with 24/7 support from SecureAnyCloud.

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Need Help?

Our support team is available 24/7.

sales@secureanycloud.com