title: Maximum number of connections possible with H2 in server mode
body: <p>I want to insert data from multiple threads to H2 database, I connected the h2 database in Server mode using dbcp connection pooling. 
  When I tried to insert data from 2000 threads I got one Exception is</p>
  
  <pre><code>"java.net.SocketException: No buffer space available (maximum connections reached?)". 
  </code></pre>
  
  <p>So I want to find out two things</p>
  
  <ol>
  <li>The maximum number of connections possible ?    </li>
  <li>Can I share connections with multiple threads ?              </li>
  </ol>