title: WAL level not sufficient for making an online backup
body: <p>I have tried to do database replication in linux 7.0 red hat using postgresql.</p>
  
  <p>I refered this URL for Confuring <a href="http://blog.terminal.com/postgresql-replication-and-backup-methods/" rel="nofollow">http://blog.terminal.com/postgresql-replication-and-backup-methods/</a> I completed the the steps upto this step</p>
  
  <blockquote>
    <ol start="5">
    <li>Configuring the slave server</li>
    </ol>
  </blockquote>
  
  <p>but the step </p>
  
  <blockquote>
    <ol start="6">
    <li>Initial replication</li>
    </ol>
  </blockquote>
  
  <p>when I executed this command in Master </p>
  
  <pre><code>-bash-4.2$ psql -c "select pg_start_backup('initial_backup');"
  </code></pre>
  
  <p>I got Error Like this</p>
  
  <pre><code>ERROR:  WAL level not sufficient for making an online backup
  HINT:  wal_level must be set to "archive" or "hot_standby" at server start.
  </code></pre>
  
  <p>So kindly let me know where we are wrong.</p>