From: Steve Essery <Steve.Essery_at_Sun.COM>
Date: Wed, 21 Oct 2009 10:18:08 +0100

I believe ulimit, with no arguments, reports the file size limit.

You would want ulimit -n to see the limit on the number of file descriptors that can be open at one time.

While this following link is for the directory server, it does run through how to increase the number of file descriptors on a Redhat 4 system:

http://www.redhat.com/docs/manuals/dir-server/install/8.0/Installation_Guide-Support-Platforms.html#Installation_Guide-Platform_Support-File_Tuning

which might help.

Lasitha Kodikara wrote:

Hi All,

 

In our production server the following error occurs. We are having a 1 instance GF cluster. We are starting the server using root and when I check the ulimit of the machine, it says unlimited. We  are using Red Hat AS 4 Update 2 as the OS.

 

“

[root@mimax ~]# ulimit

Unlimited

“

 

Please help me to solve this problem.

 

Regards,

Lasitha

 

[#|2009-10-20T17:55:39.945+0530|SEVERE|sun-appserver2.1|javax.enterprise.system.container.web|_ThreadID=203;_ThreadName=SelectorThread-6061;_RequestID=825100e1-eedf-4fde-b2fb-436dd5972802;|Running out of operating systems file descriptors. Cannot serve requests anymore.

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 com.sun.enterprise.web.connector.grizzly.SelectorThread.handleAccept(SelectorThread.java:1478)

      at com.sun.enterprise.web.connector.grizzly.SelectorThread.handleConnection(SelectorThread.java:1457)

      at com.sun.enterprise.web.connector.grizzly.SelectorThread.doSelect(SelectorThread.java:1361)

      at com.sun.enterprise.web.connector.grizzly.SelectorThread.startListener(SelectorThread.java:1295)

      at com.sun.enterprise.web.connector.grizzly.SelectorThread.startEndpoint(SelectorThread.java:1258)

      at com.sun.enterprise.web.connector.grizzly.SelectorThread.run(SelectorThread.java:1234)

|#]

 

[#|2009-10-20T17:55:39.946+0530|SEVERE|sun-appserver2.1|javax.enterprise.system.container.web|_ThreadID=203;_ThreadName=SelectorThread-6061;_RequestID=825100e1-eedf-4fde-b2fb-436dd5972802;|WEB0756: Caught exception during HTTP processing.

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 com.sun.enterprise.web.connector.grizzly.SelectorThread.handleAccept(SelectorThread.java:1478)

      at com.sun.enterprise.web.connector.grizzly.SelectorThread.handleConnection(SelectorThread.java:1457)

      at com.sun.enterprise.web.connector.grizzly.SelectorThread.doSelect(SelectorThread.java:1361)

      at com.sun.enterprise.web.connector.grizzly.SelectorThread.startListener(SelectorThread.java:1295)

      at com.sun.enterprise.web.connector.grizzly.SelectorThread.startEndpoint(SelectorThread.java:1258)

      at com.sun.enterprise.web.connector.grizzly.SelectorThread.run(SelectorThread.java:1234)

|#]

 

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