In 2017 big blue had decided enough is enough. Let's move to those hip new technologies like, php and MySQl. Let's do angular too!
It was a small simple application. It took no longer than a week to migrate to mysql. Unfortunately, we had a long term contract with Oracle. It didn't matter that we weren't using their db anymore, we still had 10 more years to go.
The strength of the Oracles and IBMs of the world is not in technology. It's in sales.