Commencing with the September 2022 Oracle Exadata System Software release updates (versions 21.2.16 and 22.1.3), the cell RAM Cache feature is deprecated.

Existing RAM Cache installations continue to operate as they did in previous releases. However, new RAM Cache creation requests are not allowed after the deprecation.

The cell RAM Cache feature was introduced in Oracle Exadata System Software version 18.1.0. See In-Memory OLTP and Consolidation Acceleration.