Sure, here is how you can display all views on Oracle database:

SQL

SELECT view_name
FROM user_views;

This query will select all views in the current user's schema. The user_views view is a data dictionary view that contains information about all of the views in the schema.

The view_name column contains the name of the view.

To run this query, you will need to connect to the Oracle database using a tool like SQLPlus. Once you are connected, you can run the query by typing it into the SQLPlus prompt.

For example, to run the query above, you would type the following into the SQL*Plus prompt:

SQL

SELECT view_name
FROM user_views;

This would return a list of all views in the current user's schema.

You can also use the all_views view to list all views in the database, including views that are owned by other users.

Here is the syntax for the all_views view:

SQL

SELECT view_name
FROM all_views;

To run this query, you will need to have the DBA role or be granted the SELECT privilege on the all_views view.