Yeah, lots of corporate backend code is Java, and Java is a great choice for backend/server code. I've never seen Oracle anywhere, though, not in banks and not in governments. I've mostly seen Postgres and MSSQL and some MongoDB.
replyI've been working in Wall St. banks for the past 30 years, and I've never used an Oracle database. The investment banks were all Sybase shops in the 90's, and a bunch of them still are. In my experience those that do move are most likely to go to SQL Server, since its Sybase roots make the transition a little easier.
replyWhen something has been there for 20+ years switching costs are big.
I work for a pretty big one and we’ve got an exacc or twelve.
replyRegulatory thing for us, some workloads need production support for the data tier for various boring legal and compliance reasons, so our choices are kida limited to oracle and, these days, mongo, who have made massive inroads to enterprise in the last couple years.
Personally, I prefer Mongo.