In this video it shows how to develop a Matlab App to connect and work with Oracle Database. It runs a simple query to fetch the data from the database and display it in the TextArea widget in the App.

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Complete source code and other details:

classdef OracleDBApp < matlab.apps.AppBase

    % Properties that correspond to app components
    properties (Access = public)
        UIFigure             matlab.ui.Figure
        OutputTextArea       matlab.ui.control.TextArea
        OutputTextAreaLabel  matlab.ui.control.Label
        OracleDBButton       matlab.ui.control.Button
    end

    % Callbacks that handle component events
    methods (Access = private)

        % Button pushed function: OracleDBButton
        function OracleDBButtonPushed(app, event)

            connection = database('', ...
                'CTXSYS', ...
                'CTXSYS', ...
                'Vendor', 'Oracle', ...
                'driver', 'ojdbc14.jar', ...
                'URL', ['jdbc:oracle:thin:@(Description =' ...
                '(ADDRESS = (PROTOCOL = TCP)(HOST = localhost)' ...
                '(PORT=1521)) (CONNECT_DATA=' ...
                '(SERVER = DEDICATED)(SERVICE_NAME=XE)))' ]);


            query = "SELECT table_name FROM user_tables fetch first 10 rows only";

            data = fetch(connection, query);

            close(connection);

            data = table2array(data);
            app.OutputTextArea.Value = data;


        end
    end

    % Component initialization
    methods (Access = private)

        % Create UIFigure and components
        function createComponents(app)

            % Create UIFigure and hide until all components are created
            app.UIFigure = uifigure('Visible', 'off');
            app.UIFigure.Position = [100 100 640 480];
            app.UIFigure.Name = 'MATLAB App';

            % Create OracleDBButton
            app.OracleDBButton = uibutton(app.UIFigure, 'push');
            app.OracleDBButton.ButtonPushedFcn = createCallbackFcn(app, @OracleDBButtonPushed, true);
            app.OracleDBButton.Position = [33 256 100 22];
            app.OracleDBButton.Text = 'Oracle DB';

            % Create OutputTextAreaLabel
            app.OutputTextAreaLabel = uilabel(app.UIFigure);
            app.OutputTextAreaLabel.HorizontalAlignment = 'right';
            app.OutputTextAreaLabel.Position = [190 419 42 22];
            app.OutputTextAreaLabel.Text = 'Output';

            % Create OutputTextArea
            app.OutputTextArea = uitextarea(app.UIFigure);
            app.OutputTextArea.Position = [247 58 354 385];

            % Show the figure after all components are created
            app.UIFigure.Visible = 'on';
        end
    end

    % App creation and deletion
    methods (Access = public)

        % Construct app
        function app = OracleDBApp

            % Create UIFigure and components
            createComponents(app)

            % Register the app with App Designer
            registerApp(app, app.UIFigure)

            if nargout == 0
                clear app
            end
        end

        % Code that executes before app deletion
        function delete(app)

            % Delete UIFigure when app is deleted
            delete(app.UIFigure)
        end
    end
end

Code View:

Design View:

Connection through sqlplus:

C:\>sqlplus CTXSYS/CTXSYS@//localhost:1521/XE

JAR File:

https://drive.google.com/drive/folders/1XRSIc-driOh0EkGnLlrJ4M6EZSPLfs6O?usp=sharing