Oracle Driver

Installation Guide

There are two ways to install Drupal 8 Oracle Database Driver.

1. Composer way (preferred).

Step 1. Add one more installer-paths to yours composer.json:
"web/drivers/lib/Drupal/Driver/Database/{$name}":["drupal/oracle"]

This path should be added before "type:drupal-module" path.
More details about the issue with installer-paths:
https://www.drupal.org/node/2924316

Step 2. Run a standard command:
composer require drupal/oracle

2. Download an archive from drupal.org project page and place the code in this directory:
DRUPAL_ROOT/drivers/lib/Drupal/Driver/Database/oracle