title: What is antiJARLocking attribute?
body: <p>what does the attribute <code>antiJARLocking</code> mean ? What is it's significance when I turn it to <em>true / false</em> ?</p>
  
  <p>I have seen this attribute in <code>context.xml</code> file of web-application :</p>
  
  <pre><code>&lt;?xml version="1.0" encoding="UTF-8"?&gt;
  &lt;Context antiJARLocking="true" path="/poll"&gt;
   &lt;Resource name="jdbc/PollDatasource" auth="Container"
             type="javax.sql.DataSource"
   // etc etc
  &lt;/context&gt;
  </code></pre>