title: ORA-01900: LOGFILE keyword expected when trying to drop tablespace
body: <pre class="lang-none prettyprint-override"><code>SQL&gt; alter database drop tablespace XXX including contents and datafiles;
  alter database drop tablespace XXX including contents and datafiles
                      *
  ERROR at line 1:
  ORA-01900: LOGFILE keyword expected
  </code></pre>
  
  <p>Note : I do not have datafile regarding this tablespace I have deleted it manually.</p>
  
  <p>Please advice me and also if any article regarding backup tablespaces please share</p>