How to use Doctrine OracleSessionInit listener with Symfony2?

I am using oracle and I am recieving this error:

Could not convert database value "17-NOV-11 12.17.33 AM" to Doctrine Type datetime. Expected format: Y-m-d H:i:s

Also I can´t create new rows because oracle complaints about the datetime format.

I know that mysql datetime format and oracle one are different.

I understand that you can use doctrine listeners with symfony 2:

http://symfony.com/doc/current/cookbook/doctrine/event_listeners_subscribers.html

And, there´s a doctrine listener created to fix this issue:

Doctrine/DBAL/Event/Listeners/OracleSessionInit.php

The question is how Exactly your turn it on in symfony 2.