IMO, Oracle has been a horror-show right from the git-go.
That's why I don't use it, or recommend it. Anywhere.
On the eve of Halloween, Oracle has asked sysadmins to send it horror movies, or at least screen-capture videos of the issues they want Big O's support teams to solve. Oracle has a name for this service: Demo It To Oracle, or DITO for short. The idea is simple: rather than try to explain a bug to an Oracle service chap, or …
We have been waiting over 6 months for a couple of critical (i.e. total usage failure) bug-fixes on their storage product, and years for some other bugs to be fixed.
The whole point of Oracle "support" is to take your money and try to talk the problem to death with escalation manager after escalation manager doing SFA. The whole Oracle "escalation process" reminds me of the Escher drawing of the monks climbing a never-ending closed staircase.