Could not accept connection : java.net.SocketException

[pchandler]

I have the following in my activeMQ 5.4  log. Any ideas?

2011-07-05 19:21:34,620 | ERROR | Could not accept connection : java.net.SocketException: Too many open files | org.apache.activemq.broker.TransportConnector | ActiveMQ Transport Server: tcp://0.0.0.0:61616
2011-07-05 19:21:34,620 | ERROR | Could not accept connection : java.net.SocketException: Too many open files | org.apache.activemq.broker.TransportConnector | ActiveMQ Transport Server: tcp://0.0.0.0:61616
2011-07-05 19:21:34,620 | WARN  | EXCEPTION  | org.eclipse.jetty.util.log | qtp1358669058-57 - Acceptor0 SelectChannelConnector@0.0.0.0:8161
java.io.IOException: Too many open files
        at sun.nio.ch.ServerSocketChannelImpl.accept0(Native Method)
        at sun.nio.ch.ServerSocketChannelImpl.accept(ServerSocketChannelImpl.java:145)
        at org.eclipse.jetty.server.nio.SelectChannelConnector$1.acceptChannel(SelectChannelConnector.java:75)
        at org.eclipse.jetty.io.nio.SelectorManager$SelectSet.doSelect(SelectorManager.java:651)
        at org.eclipse.jetty.io.nio.SelectorManager.doSelect(SelectorManager.java:180)
        at org.eclipse.jetty.server.nio.SelectChannelConnector.accept(SelectChannelConnector.java:135)
        at org.eclipse.jetty.server.AbstractConnector$Acceptor.run(AbstractConnector.java:776)
        at org.eclipse.jetty.util.thread.QueuedThreadPool$2.run(QueuedThreadPool.java:436)
        at java.lang.Thread.run(Thread.java:619)

[jradecki]

Check the handles associated w/ActiveMQ and your service...

[pchandler]

Sorry, not sure what handles to check?

The only thing I could come-up with is, maybe it's Linux resource limits (open files)

ActiveMQ process has 1161 FDs open?

hostname[apache-activemq-5.4.0/data] 113 ->lsof -p 7973 | wc -l
1162

Seem like alot?

[davsclaus]

What persistent storage do you use with ActiveMQ?

[pchandler]

Answer: None. persistent="false" and we commented-out KahaDB. Is that bad?

        <!-- 
            Configure message persistence for the broker. The default persistence
            mechanism is the KahaDB store (identified by the kahaDB tag). 
            For more information, see: 
            
            http://activemq.apache.org/persistence.html 
        -->
<!--
        <persistenceAdapter>
            <kahaDB directory="${activemq.base}/data/kahadb"></kahaDB>
        </persistenceAdapter>
-->