Generate DDL Source Code with SQL

SELECT dbms_metadata.get_ddl(replace(OBJECT_TYPE, ' ', '_'), OBJECT_NAME,OWNER) as DDL_SOURCE_CODE
FROM ALL_OBJECTS
WHERE OBJECT_TYPE IN 
   ('SEQUENCE',   'TABLE',           'INDEX',
    'VIEW',       'DATABASE LINK',   'MATERIALIZED VIEW',
    'FUNCTION',   'PROCEDURE',       'PACKAGE',
    'PACKAGE BODY'
    )
AND OWNER = '#SCHMEA_NAME#';