Oracle has decided to introduce a new and simpler system to set a version number for its databases. The basis for the numbering will now be the year of the database release. Therefore, the release of the version 12.2.0.2 has been named as Oracle 18c (where 18 stands for the year 2018) and the next version i.e. 12.2.0.3 which will be released next year is going to be considered as version 19.