Ask HN: What Historically Is Oracle VAX Rdb/VMS?

Hey HN,

In conversation, I heard that Oracle had a version of their database that historically ran on the VAX system:

https://en.m.wikipedia.org/wiki/Oracle_Rdb

I've never heard of this before (and have tried do a decent bit of historical research in general). Would be interesting if anyone else had practical experience or historical knowledge about it? How does it compare to what is modern Oracle?

I try to explore a lot of historical hardware and operating systems in my spare time. (You know when you are back for the holidays you get to hear all kinds of great old stories...)