PostgreSQL vs Oracle Differences #4 - Shared Memory Usage

> On the other hand OS’s are getting smarter and RAM cheaper, so perhaps it’s better to not overcomplicate the code and let the OS handle the problem.

In the case of open-source OSs, it even makes sense to contribute code back to the kernel that can improve database performance. If you know a better caching strategy than the one the OS is using, everybody wins if the kernel adopts it.