解决Tomcat奇怪的问题：java.net.SocketException: Too many open files

Tomcat运行一段时间后自动当掉，

察看日志：java.net.SocketException: Too many open files

 

严重: Endpoint ServerSocket[addr=0.0.0.0/0.0.0.0,port=0,localport=80] ignored exception: java.net.SocketException: Too many open files
java.net.SocketException: Too many open files
 at java.net.PlainSocketImpl.socketAccept(Native Method)
 at java.net.PlainSocketImpl.accept(PlainSocketImpl.java:384)
 at java.net.ServerSocket.implAccept(ServerSocket.java:450)
 at java.net.ServerSocket.accept(ServerSocket.java:421)
 at org.apache.tomcat.util.net.DefaultServerSocketFactory.acceptSocket(DefaultServerSocketFactory.java:60)
 at org.apache.tomcat.util.net.PoolTcpEndpoint.acceptSocket(PoolTcpEndpoint.java:407)
 at org.apache.tomcat.util.net.LeaderFollowerWorkerThread.runIt(LeaderFollowerWorkerThread.java:70)
 at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:684)
 at java.lang.Thread.run(Thread.java:595)

 

 

这个错误，通过增大系统的max open file 可以得到改善，参考：

http://kbase.redhat.com/faq/FAQ_80_1540.shtm

 

设置 max open file 为更大以后，没有了这个错误。

但是还存在一个错误：

Exception Processing ErrorPage[errorCode=404, location=/error/error404.jsp] 
错误描述和解决办法如下面引用的一样：

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From : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=3840241