Professional. Many rounds, but they happen very closely to each other. You could be done in two weeks.
1 HR round, then 1 technical with HackerRank, then an interview loop:
Mainly, what have you worked on? Behavioral, not very technical questions.
The following metrics were computed from 1 interview experience for the Oracle Cloud Developer role in Czech Republic.
Oracle's interview process for their Cloud Developer roles in Czech Republic is incredibly easy as the vast majority of engineers get an offer after going through it.
Candidates reported having very good feelings for Oracle's Cloud Developer interview process in Czech Republic.