Oracle Database Multilingual Engine

A runtime for executing GraalVM languages in Oracle Database.

Project Overview

Stored procedures, user-defined functions and triggers - in general server-side procedural logic - complement SQL processing and are an important part of many database applications, in particular in enterprise environments. Multilingual Engine (MLE) is a feature of Oracle Database that enables the use of modern programming languages like JavaScript for server-side procedural logic. On the basis of GraalVM, MLE builds a platform for efficient, scalable program execution in Oracle Database that is tightly integrated with processing of relational and non-relational data.

A first version of MLE has been published as part of Oracle Database 21c. It features ad-hoc execution of JavaScript snippets and integration with Oracle APEX. MLE supports all major PL/SQL types and automatically maps to the corresponding JavaScript types and vize-versa. Additionally, the JavaScript code itself can execute PL/SQL and SQL through a built-in JavaScript module.

The Multilingual Engine team at Oracle Labs works on further developing this platform to provide innovative features for database apps.