[blendo]

Oracle XE is free for production use, but it only makes sense if

a) you are already familiar with Oracle, and

b) you have a very small data set:

“Oracle Database 18c XE supports up to:

3 Pluggable Databases

2 CPUs for foreground processes

2GB of RAM (SGA and PGA combined)

12GB of user data on disk (irrespective of compression factor)”