Question

I have been using symfony2 and doctrine2. I am working with one entity manager.

I am still not able to find why would there be need of more entity managers in project.

Can anyone please explain me what is the use case of having more entity managers

Answer 1

You can use multiple entity managers in a Symfony2 application. This is necessary if you are using different databases or even vendors with entirely different sets of entities. In other words, one entity manager that connects to one database will handle some entities while another entity manager that connects to another database might handle the rest.

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