title: Find Size of a Database in Oracle
body: <p>I have a database named "My_Enterprise_Data". I need to find the size that it occupies on the disk. </p>
  
  <p>How do I find it out?</p>
  
  <p>Is the query, <code>SELECT sum(bytes)/1024/1024 AS "Size in MB" FROM user_segments</code> run against the My_Enterprise_Data correct?</p>