Introduced as part of Database In-Memory in Oracle Database 18c, Automatic In-Memory enables automatic management of the contents of the In-Memory column store.
Oracle Database 18c – Automatic In-Memory Feature
Authors

William Hardie
Vice President, Product Management
William Hardie is Vice President of Oracle Database Product Management. He has been in IT for more than 30 years, and has specialized in relational database technologies for more than 25 years.