title: org.postgresql.util.PSQLException: FATAL: sorry, too many clients already
body: <p>I am trying to connect to a Postgresql database, I am getting the following Error:</p>
  
  <blockquote>
    <p>Error:org.postgresql.util.PSQLException: FATAL: sorry, too many clients already</p>
  </blockquote>
  
  <p>What does the error mean and how do I fix it?</p>
  
  <p>My <code>server.properties</code> file is following:</p>
  
  <pre><code>serverPortData=9042
  serverPortCommand=9078
  trackConnectionURL=jdbc:postgresql://127.0.0.1:5432/vTrack?user=postgres password=postgres
  dst=1
  DatabaseName=vTrack
  ServerName=127.0.0.1
  User=postgres
  Password=admin
  MaxConnections=90
  InitialConnections=80
  PoolSize=100
  MaxPoolSize=100
  KeepAliveTime=100
  TrackPoolSize=120
  TrackMaxPoolSize=120
  TrackKeepAliveTime=100
  PortNumber=5432
  Logging=1
  </code></pre>