Date fields in Oracle hold the time, but by default, the time is not displayed.
Below is a sample of how to format the date with time:
<pre>
TO_CHAR(CREATION_DATE, 'YYYY-MM-DD HH24:MI:SS') as CREATION_DATE
</pre>
Example:
<pre>
select Creation_Date, TO_CHAR(CREATION_DATE, 'YYYY-MM-DD HH24:MI:SS') as CREATION_DATE_Fmt
from PO.PO_HEADERS_ALL
where Creation_Date is not null
order by Creation_Date desc
</pre>
Notice how the time does not appear by default in the first field displayed: