Oracle TimesTen In-Memory Database

The Oracle TimesTen In-Memory Database is an in-memory relational database in which all data is located in random access memory (RAM). 

An in-memory database has faster query and response times acompared to a database that requires frequent access to data on hard disks. As with other in-memory databases, the Oracle TimesTen In-Memory Database has gained traction in vertical industries where service level agreements (SLAs) often require sub-second database response times. Those industries include telecommunications, financial services and web applications for e-commerce and entertainment.

The TimesTen In-Memory Database was initially designed at Hewlett-Packard Labs in the early 1990s. Oracle acquired TimesTen in 2005 and has continued to develop the Oracle TimesTen In-Memory Database, adding features that integrate TimesTen better with other Oracle products such as Enterprise Manager.