[takeda]

I personally never used it, but worked for a company who at the time used EDB to migrate away from Oracle. They apparently had a tons of stored procedures and they mostly worked, but it is possible they didn't use any of the things you mentioned.

Anyway maybe I should say differently, maybe they don't provide most of the functionality, but their goal is provide database that can help to migrate away from Oracle, and this storage engine that appears to mimic one in Oracle (and I'm guessing has similar tradeoffs) fits that model.