How to close the LDAP client connection from ApacheDS

[Ado Dao]

Hi,

we have found following exception in the log file. A ware any known problems.


NioSocketAcceptor-1 WARN util.DefaultExceptionMonitor| Unexpected exception.
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.apache.mina.transport.socket.nio.NioSocketAcceptor.accept(NioSocketAcceptor.java:217)
        at 
org.apache.mina.transport.socket.nio.NioSocketAcceptor.accept(NioSocketAcceptor.java:48)
        at 
org.apache.mina.core.polling.AbstractPollingIoAcceptor$Acceptor.processHandles(AbstractPollingIoAcceptor.java:481)
        at 
org.apache.mina.core.polling.AbstractPollingIoAcceptor$Acceptor.run(AbstractPollingIoAcceptor.java:412)
        at 
org.apache.mina.util.NamePreservingRunnable.run(NamePreservingRunnable.java:64)
        at 
java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
        at 
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
        at java.lang.Thread.run(Thread.java:662)


It looks like some ldap clients keep the connection to the apachds alive. 
Is there any option to close the ldap connection after given timeout serverside.

Thanks 
Ado