Incompatible applications

Magento
On the shared hosting servers, you may not be able to run Magento (an open source e-commerce platform), since it potentially uses a large amount of RAM, per their System Requirements.

However, you should be able to run Magento on a Virtual Private Server (VPS) with no issues, since you can allocate as much RAM as you need for your server.

JIRA
Not possible to configure this on shared, more info here.