title: How many bytes does date datatype occupy in oracle
body: <p>How many bytes does date datatype occupy in oracle?</p>
  
  <pre><code>v_date:=to_date('15-08-2014','dd-mm-yyyy');
  v_day:=to_char(v_day,'day');
  </code></pre>
  
  <p>now blank space is padded at the end of v_day,so the below condition wont work</p>
  
  <pre><code>if v_day='saturday' then
  dbms_ouput.put_line('half_day');
  </code></pre>
  
  <p>for the above condition to work,i need to use rtim</p>
  
  <pre><code>v_day:=rtrim(to_char(v_day,'day'));
  </code></pre>
  
  <p>now the question is to know How many bytes does date datatype occupy in oracle?</p>