Oracle In-Memory Database Cache is a database option that provides real-time, updatable caching for the Oracle database. Oracle In-Memory Database Cache improves application transaction response time by caching a performance-critical subset of tables and table fragments
from an Oracle database to the application tier. Cache tables are managed like regular SQL relational database tables within the TimesTen In-Memory Database. Thus, Oracle In-Memory Database Cache offers applications the full generality and functionality of a relational database, the transparent maintenance of cache consistency with the Oracle Database, and the real-time performance of an in-memory database.