Oracle TimesTen In-Memory Database (TimesTen) is a relational database that is memory-optimized for fast response and throughput. The database resides entirely in memory at runtime and is persisted to disk storage.
Oracle TimesTen In-Memory Database in classic mode, or TimesTen Classic, refers to single-instance and replicated databases (as in previous releases).
Oracle TimesTen In-Memory Database in grid mode, or TimesTen Scaleout, refers to a multiple-instance distributed database. TimesTen Scaleout is a grid of interconnected hosts running instances that work together to provide fast access, fault tolerance, and high availability for in-memory data.
TimesTen alone refers to both classic and grid modes (such as in references to TimesTen utilities, releases, distributions, installations, actions taken by the database, and functionality within the database).
TimesTen Application-Tier Database Cache, or TimesTen Cache, is an Oracle Database Enterprise Edition option. TimesTen Cache is ideal for caching performance-critical subsets of an Oracle database into cache tables within a TimesTen database for improved response time in the application tier. Cache tables can be read-only or updatable. Applications read and update the cache tables using standard Structured Query Language (SQL) while data synchronization between the TimesTen database and the Oracle database is performed automatically. TimesTen Cache offers all of the functionality and performance of TimesTen Classic, plus the additional functionality for caching Oracle Database tables.
TimesTen Replication features, available with TimesTen Classic or TimesTen Cache, enable high availability.
TimesTen supports standard application interfaces JDBC, ODBC, and ODP.NET; Oracle interfaces PL/SQL, OCI, and Pro*C/C++; and the TimesTen TTClasses library for C++.
This document covers TimesTen support for ODBC, OCI, and Pro*C/C++.
This preface covers the following topics:
This document provides a reference of all TimesTen error messages. This document is intended for readers with a basic understanding of database systems.
TimesTen documentation is available at https://docs.oracle.com/database/timesten-18.1.
Oracle Database documentation is also available on the Oracle documentation website. This may be especially useful for Oracle Database features that TimesTen supports but does not attempt to fully document, such as OCI and Pro*C/C++.
TimesTen supports multiple platforms. Unless otherwise indicated, the information in this guide applies to all supported platforms. The term Windows refers to all supported Windows platforms and the term UNIX applies to all supported UNIX platforms. The term Linux is used separately. Refer to the "Platforms and configurations" in Oracle TimesTen In-Memory Database Release Notes (README.html) in your installation directory for specific platform versions supported by TimesTen.
Note:
In TimesTen documentation, the terms "data store" and "database" are equivalent. Both terms refer to the TimesTen database.This document uses the following text conventions:
| Convention | Meaning |
|---|---|
| boldface | Boldface type indicates graphical user interface elements associated with an action, or terms defined in text or the glossary. |
| italic | Italic type indicates book titles, emphasis, or placeholder variables for which you supply particular values. |
monospace |
Monospace type indicates code, commands, URLs, function names, attribute names, directory names, file names, text that appears on the screen, or text that you enter. |
italic monospace |
Italic monospace type indicates a placeholder or a variable in a code example for which you specify or use a particular value. For example:
Replace |
| [ ] | Square brackets indicate that an item in a command line is optional. |
| { } | Curly braces indicated that you must choose one of the items separated by a vertical bar ( | ) in a command line. |
| | | A vertical bar (or pipe) separates arguments that you may use more than one argument on a single command line. |
| . . . | An ellipsis (. . .) after an argument indicates that you may use more than one argument on a single command line. |
| % or $ | The percent sign or dollar sign indicates the Linux or UNIX shell prompt, depending on the shell that is used. |
| # | The number (or pound) sign indicates the prompt for the Linux or UNIX root user. |
TimesTen documentation uses these variables to identify path, file and user names:
| Convention | Meaning |
|---|---|
installation_dir |
The path that represents the directory where TimesTen is installed. |
timesten_home |
The path that represents the home directory of a TimesTen instance. |
release or rr |
The first three parts in a release number, with or without dots. The first three parts of a release number represent a major TimesTen release. For example, 181 or 18.1 represents TimesTen Release 18.1. |
DSN |
The data source name. |
For information about Oracle's commitment to accessibility, visit the Oracle Accessibility Program website at http://www.oracle.com/pls/topic/lookup?ctx=acc&id=docacc.
Oracle customers that have purchased support have access to electronic support through My Oracle Support. For information, visit http://www.oracle.com/pls/topic/lookup?ctx=acc&id=info or visit http://www.oracle.com/pls/topic/lookup?ctx=acc&id=trs if you are hearing impaired.