This section summarizes new features and functionality of TimesTen Release 18.1 that are documented in this guide, providing links into the guide for more information.
There are significant updates to the Oracle TimesTen In-Memory Database Introduction to include information about TimesTen Scaleout in addition to new features for this release.
"TimesTen In-Memory Database general feature overview" describes features that are general to TimesTen Scaleout, TimesTen Classic and TimesTen Cache. These were updated as appropriate.
Open source languages, which are new for this release, interact with TimesTen through the Oracle Database Programming Interface for C (ODPI-C). The languages currently supported are Python and Node.js. See "Open source programming languages" for details.
"Durability" now describes how durability is accomplished with both TimesTen Scaleout and TimesTen Classic.
"System monitoring" now describes how to monitor both TimesTen Scaleout and TimesTen Classic systems.
There are now sections that describe the specific features for each product. See "TimesTen Scaleout specific features", "TimesTen Classic specific features", and "TimesTen Cache specific features" for details.
"Uses for TimesTen Scaleout" describes uses and a specific scenario for TimesTen Scaleout.
"Architectural overview of TimesTen Scaleout" details an architectural overview of TimesTen Scaleout.
"Disaster recovery through TimesTen Cache" describes how TimesTen Cache supports Oracle Data Guard, as well as providing its own HA capability through active standby pair replication of cache tables for read-only and AWT cache groups.
"Monitor problems with SNMP traps" describes how TimesTen uses Simple Network Management Protocol (SNMP).
"Command line administration" includes the ttGridAdmin utility.
"Facilitating TimesTen Scaleout development and management" details how to use SQL Developer to facilitate TimesTen Scaleout development and management.
"Installing TimesTen" and "Migrating a database" now describe how to install TimesTen Scaleout and migrate from a TimesTen Classic database to a TimesTen Scaleout database.
"Upgrading TimesTen" contains new details on the process for upgrading to a new release of TimesTen.
There are now two modes for Oracle TimesTen In-Memory Database.
Oracle TimesTen In-Memory Database in grid mode (TimesTen Scaleout) is a grid of interconnected hosts running TimesTen Scaleout instances that work together to provide fast access, fault tolerance, and high availability for in-memory data. A grid contains one or more databases and each database is distributed across all instances of the grid. TimesTen Scaleout delivers these features by distributing the data for each in-memory database in the grid across multiple hosts. See the Oracle TimesTen In-Memory Database Scaleout User's Guide for full details.
Oracle TimesTen In-Memory Database in classic mode or TimesTen Classic refers to single-instance environments and databases and referred to as TimesTen alone in previous releases.
Now, when the documentation refers to TimesTen alone (without TimesTen Classic or TimesTen Scaleout), the statement applies to both single-instance and multiple-instance, such as in references to TimesTen utilities, releases, distributions, installations, actions taken by the database, and functionality within the database.
TimesTen Scaleout is only supported on the Linux platform, while TimesTen Classic is supported on multiple platforms. See the Oracle TimesTen In-Memory Database Release Notes (README.html) in your installation directory for specific platform versions supported by TimesTen.