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Too many open files

I am using Openfire 4.0.3 for our chat application. My Openfire stop connecting xmpp Android client suddenly. While checking in error log following error found.

**org.jivesoftware.openfire.container.PluginManager - /usr/share/openfire/plugins: Too many open files **

java.nio.file.FileSystemException: /usr/share/openfire/plugins: Too many open files
at sun.nio.fs.UnixException.translateToIOException(UnixException.java:91)
at sun.nio.fs.UnixException.rethrowAsIOException(UnixException.java:102)
at sun.nio.fs.UnixException.rethrowAsIOException(UnixException.java:107)
at sun.nio.fs.UnixFileSystemProvider.newDirectoryStream(UnixFileSystemProvider.jav a:426)
at java.nio.file.Files.newDirectoryStream(Files.java:545)
at org.jivesoftware.openfire.container.PluginManager$PluginMonitor.run(PluginManag er.java:944)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471)
at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:304)
at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301 (ScheduledThreadPoolExecutor.java:178)
at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(Schedu ledThreadPoolExecutor.java:293)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
at java.lang.Thread.run(Thread.java:745)
org.jivesoftware.openfire.container.PluginManager - /usr/share/openfire/plugins: Too many open files
java.nio.file.FileSystemException: /usr/share/openfire/plugins: Too many open files
at sun.nio.fs.UnixException.translateToIOException(UnixException.java:91)
at sun.nio.fs.UnixException.rethrowAsIOException(UnixException.java:102)
at sun.nio.fs.UnixException.rethrowAsIOException(UnixException.java:107)
at sun.nio.fs.UnixFileSystemProvider.newDirectoryStream(UnixFileSystemProvider.jav a:426)
at java.nio.file.Files.newDirectoryStream(Files.java:545)
at org.jivesoftware.openfire.container.PluginManager$PluginMonitor.run(PluginManag er.java:944)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471)
at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:304)
at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301 (ScheduledThreadPoolExecutor.java:178)
at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(Schedu ledThreadPoolExecutor.java:293)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
at java.lang.Thread.run(Thread.java:745)

This repeated many times in error log. Can you please help me find out why my openfire stop connecting xmpp android client.

Why do you post your questions in “Jabber Network University” subforum? Nobody will see it there. I will move it to Openfire Support. Next time choose where you post things.