TimesTen

Oracle TimesTen In-Memory Database is an in-memory, relational database management system with persistence and high availability. Originally designed and implemented at Hewlett-Packard labs in Palo Alto, California, TimesTen spun out into a separate startup in 1996 and was acquired by Oracle Corporation in 2005.

TimesTen databases are persistent and can be highly available. Because it is an in-memory database it provides very low latency and high throughput. It provides standard relational database APIs and interfaces such as the SQL and PL/SQL languages. Applications access TimesTen using standard database APIs such as ODBC and JDBC.

TimesTen can be used as a standalone database, and is also often used as a cache in front of another relational database such as Oracle Database. It is frequently used in very high volume OLTP applications such as prepaid telecom billing and financial trading. It is also used for read-intensive applications such as very large websites and location-based services.

TimesTen can be configured as a shared-nothing clustered system (TimesTen Scaleout) supporting databases much larger than the RAM available on a single machine, and providing scalable throughput and high availability. It can also be configured in replicated active/standby pairs of databases (TimesTen Classic) providing high availability and microsecond response time.

TimesTen runs on Linux, Solaris and AIX and also supports client applications running on Windows and macOS.