Expanding Section: Oracle Database Version Usage Percentages
… Overall, roughly an insignificant 6% of Oracle customers have migrated to the most recent version of the Oracle DB.
The question is why.
Our observation is that the Oracle database has become overly bloated in its most recent versions, and most companies do not need the extra functionality or the extra bloat and expense involved with Oracle 12c. For example, Oracle 12c adds a column store, which was put in place to combat SAP HANA, but which there is little use for in the database as we covered in the article How Accurate with Bloor Research on Oracle In Memory?