linux exception

 

Too many open files

异常如下:

********************************************************************************
Message               : Too many open files (java.net.SocketException)
Code                  : MULE_ERROR--2
--------------------------------------------------------------------------------
Exception stack is:
1. Too many open files (java.net.SocketException)
  java.net.PlainSocketImpl:-2 (null)
2. Too many open files (java.net.SocketException) (org.mule.transport.ConnectException)
  org.mule.transport.http.HttpRequestDispatcher$1:105 (http://www.mulesoft.org/docs/site/current3/apidocs/org/mule/transport/ConnectException.html)
--------------------------------------------------------------------------------
Root Exception stack trace:
java.net.SocketException: Too many open files
        at java.net.PlainSocketImpl.socketAccept(Native Method)
        at java.net.PlainSocketImpl.accept(PlainSocketImpl.java:408)
        at java.net.ServerSocket.implAccept(ServerSocket.java:462)
    + 3 more (set debug level logging or '-Dmule.verbose.exceptions=true' for everything)
********************************************************************************

参考: Too many open files -- linux文件描述符的限制调整--https://blog.csdn.net/yetyongjin/article/details/7476860

使用ulimit -a 查看最大可open files数,调大open files 的值

[weblogic@v5appdev logs]$ ulimit -a
core file size          (blocks, -c) 0
data seg size           (kbytes, -d) unlimited
scheduling priority             (-e) 0
file size               (blocks, -f) unlimited
pending signals                 (-i) 167872
max locked memory       (kbytes, -l) 32
max memory size         (kbytes, -m) unlimited
open files                      (-n) 10240
pipe size            (512 bytes, -p) 8
POSIX message queues     (bytes, -q) 819200
real-time priority              (-r) 0
stack size              (kbytes, -s) 10240
cpu time               (seconds, -t) unlimited
max user processes              (-u) 167872
virtual memory          (kbytes, -v) unlimited
file locks                      (-x) unlimited