Oracle SQL (Structured Query Language) is the language used to interact with the Oracle Database Management System. It's a powerful and flexible language that allows users to create and modify databases, retrieve and manipulate data, and control access to the data. Oracle SQL is similar to other SQL languages such as MySQL and Microsoft SQL Server, but it also includes some additional features and capabilities specific to the Oracle database.

Users can use Oracle SQL to create and alter tables, views, indexes, and other database objects, as well as to insert, update, and retrieve data from the database. It also includes a set of data definition language (DDL) statements for creating, modifying, and deleting databases and their objects, and a set of data control language (DCL) statements for controlling access to the data.

Oracle SQL is widely used in enterprise environments, and it's known for its scalability, reliability, and security features. It's commonly used in large organizations, and it's also used in various industries like Finance, Healthcare, and Retail.