I work in a small programming team supporting a larger organisation. This year our manager has decided we are going to use Oracle Apex technologies to handle the vast majority of our company data.

This would be ok, except we only have one Apex server. Our manager has decreed that everything happens in that one instance. Our team is developing apps, while our manager demo's them, and our internal clients use them, which for obvious reasons is already causing problems!

I can only expect this to get worse as we become more heavily invested in Apex, the apps get more complex and the number of users grows. How can I convince my manager that essentially having development, staging and production being the same environment is a really bad idea?