I’m using the AWS Amazon Linux 2 AMI on my EC2. To download the Oracle Instant Client get the download urls for the instant client and instant client tools from: https://www.oracle.com/database/technologies/instant-client/linux-x86-64-downloads.html
Download using curl and install with rpm:
curl instant-client-url-from-page-above --output instant-client.rpm rpm -i instant-client.rpm curl instant-client-tools-from-page-above --output instant-client-tools.rpm rpm -i instant-client-tools.rpm
To connect using sql-plus:
sqlplus 'admin@(DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=your-instance-endpoint.rds.amazonaws.com)(PORT=1521))(CONNECT_DATA=(SID=your-db-name)))'
Enter password when prompted.