Pls try with the below SQL. In my DB it is working fine.
select object_name,object_type,created,last_ddl_time,timestamp,STATUS AS "Status"
and owner = 'XXXXXX'
and last_ddl_time >= to_date('07/06/2017','dd/mm/yyyy')
order by last_ddl_time desc
The literal is not matching only for Date field. So you have to take care of the same in your code.