Getting an error when running xs application

Hi,

I am new to sap hana.  I created an xs apps that connect to a database.

var select_all_query = "SELECT KEY1, FIELD1,FIELD2,FIELD3 FROM \"NEO_DL7UMKSO5413ISUAUEPKOZIXG\".\"p1940927201trial.myhana.table::mytable2\" LIMIT 1000";

function close(closables) {

    var closable;

    for (var i = 0; i < closables.length; i++) {

        closable = closables[i];

        if (closable) {

            closable.close();

        }

    }

}

function getSampleData() {

    var salesOrdersList = [];

    var connection = $.db.getConnection();

    var statement = null;

    var resultSet = null;

    try {

        statement = connection.prepareStatement("SELECT KEY1, FIELD1,FIELD2,FIELD3 FROM \"NEO_DL7UMKSO5413ISUAUEPKOZIXG\".\"p1940927201trial.myhana.table::mytable2\" LIMIT 1000");

        resultSet = statement.executeQuery();

        var salesOrder;

        while (resultSet.next()) {

            salesOrder = {};

            salesOrder.KEY1 = resultSet.getInt(0);

            salesOrder.FIELD1 = resultSet.getDouble(1);

            salesOrder.FIELD2 = resultSet.getDouble(2);

            salesOrder.FIELD3 = resultSet.getDouble(2);

            salesOrdersList.push(salesOrder);

        }

    } finally {

        close([resultSet, statement, connection]);

    }

    return salesOrdersList;

}

function doGet() {

    try {

        $.response.contentType = "application/json";

        $.response.setBody(JSON.stringify(getSampleData()));

        //$.response.setBody("Hello");

    } catch (err) {

        $.response.contentType = "text/plain";

        $.response.setBody("Error while executing query: [" + err.message + "]");

        $.response.returnCode = 200;

    }

}

doGet();

When I run the apps I get this error

Error while executing query: [dberror(Connection.prepareStatement): 258 - insufficient privilege: Not authorized at ptime/query/checker/query_check.cc:2547]

Please help me.. Thank you