Oracle create table using with clause

The CREATE TABLE table_name AS statement creates a table based on a select statement. The solution for a with clause will be :

CREATE TABLE t
AS 
SELECT * FROM (
WITH some_data AS ( 
   SELECT 1 as some_value 
   FROM dual

   UNION ALL 

   SELECT 2 
   FROM dual
) 
);

Sure:

CREATE TABLE t
AS 
WITH some_data AS ( 
   SELECT 1 as some_value 
   FROM dual

   UNION ALL 

   SELECT 2 
   FROM dual
) 
SELECT * 
FROM some_data