"Too many open files" Exception on "tapestry-framework-4.1.1.jar"

When a browser attempts accessing to my webwork, the server opens a certain number of file descriptors to "tapestry-framework-4.1.1.jar" file and don't release them for a while.
Below is the output from "lsof | grep tapestry":
java 26735 root mem REG 253,0 62415 2425040 /usr/local/apache-tomcat-5.5.20/my_webwork/WEB-INF/lib/tapestry-portlet-4.1.1.jar
java 26735 root mem REG 253,0 2280602 2425039 /usr/local/apache-tomcat-5.5.20/my_webwork/WEB-INF/lib/tapestry-framework-4.1.1.jar
java 26735 root mem REG 253,0 320546 2425036 /usr/local/apache-tomcat-5.5.20/my_webwork/WEB-INF/lib/tapestry-contrib-4.1.1.jar
java 26735 root mem REG 253,0 49564 2424979 /usr/local/apache-tomcat-5.5.20/my_webwork/WEB-INF/lib/tapestry-annotations-4.1.1.jar
java 26735 root 28r REG 253,0 2280602 2425039 /usr/local/apache-tomcat-5.5.20/my_webwork/WEB-INF/lib/tapestry-framework-4.1.1.jar
java 26735 root 29r REG 253,0 2280602 2425039 /usr/local/apache-tomcat-5.5.20/my_webwork/WEB-INF/lib/tapestry-framework-4.1.1.jar
java 26735 root 30r REG 253,0 2280602 2425039 /usr/local/apache-tomcat-5.5.20/my_webwork/WEB-INF/lib/tapestry-framework-4.1.1.jar
These unknown references are sometimes released automatically, but sometimes not.
And I get "Too many open files" exception after using my application for a few hours.
The number of the unknown references increases as I access to my webwork or just hit on "F5" key on my browser to reload it.
I tried different types of browsers to see if I could see any differences in consequence, and in fact it differed by the browser I used.
When viewed by Internet Explorer it increased by 3 for every access.
On the other hand it increased by 7 for each attempt when accessed by FireFox.
I have already tried optimizing the max number of file discriptors, and it solved the "Too many open files" exception.
But stil I'm wondering who actually is opening "tapestry-framework-4.1.1.jar" this many.
Could anyone figure out what is going on?
Thanks in advance.
The following is my environmental version info:
- Red Hat Enterprise Linux ES release 4 (Nahant Update 4)
- Java: 1.5.0_11
- Tomcat: 5.5.20
- Tapestry: 4.1.1

Hi,
Cause might The server got an exception while trying to accept client connections. It will try to backoff to aid recovery.
The OS limit for the number of open file descriptor (FD limit) needs to be increased. Tune OS parameters that might help the server to accept more client connections (e.g. TCP accept back log).
http://e-docs.bea.com/wls/docs90/messages/Server.html#BEA-002616
Regards,
Prasanna Yalam

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Runtime.exec - Too Many Open Files

System version : Red Hat Enterprise Linux 2.4.21-47.ELsmp AS release 3 (Taroon Update 8)
JRE version : 1.6.0-b105
Important : the commands described below are launched from a Web application : Apache Tomcat 6.0.10
Hello,
I'm facing a problem already known, but appearantly never really solved ??!! ;)
When I invoke many system commands with the 'Runtime.exec(...)' method, there are open files that are not released (I can see them with the "lsof" system command) .
At the end, the unavoidable "too many open files" Exception.
The lauched commands are "ssh ... " commands.
In the topics relating to this problem, the solution is always to close all Streams / threads and to explicitely invoke the method "Process.destroy()".
My problem is that this is what I do ! And I can't do more...
Here is the code :
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Thanks by advance !
Richard.

Don't interrupt those threads. Close the output stream first, then wait for the process to exit, then both threads reading the stdout and stderr of the process should get EOFs, so they should exit naturally, and incidentally close the streams themselves.

Getting java.io.IOException: Too many open files+ClassNotFoundException

Dear All
We have a web application deployed on Rational Application Developer 6.0 (Operating System is Windows 2000 professional) our users are randomly getting java.io.IOException: Too many open files+ClassNotFoundException when they click on some servlet or jsp link, but they are getting this error randomly for example when they click some link they may get these exceptions but refreshing page or clicking once again on same link executes servlet successfully.If anyone could help on this topic we will be grateful
Thanks

I think this these two exceptions are occuring in differrent environment
java.io.IOException is occuring under heavy load to web server its stack trace is as follows:
JSPG0225E: An error occurred at line: 2 in the statically included file: /SessionCheck.jsp
JSPG0093E: Generated servlet error from file: /Admin/AdminInsuranceCertificates.jsp
E:\WebSphere_6\AppServer\profiles\AUSECert\temp\centraNode04\server1\AUSECert\Vero.war\Admin\_AdminInsuranceCertificates.java:259: cannot access com.bplus.natmar.LoginDetails
bad class file: E:\WebSphere_6\AppServer\java\jre\lib\core.jar(java/io/Writer.class)
unable to access file: E:\WebSphere_6\AppServer\profiles\AUSECert\installedApps\centraNode04Cell\AUSECert.ear\Vero.war\WEB-INF\classes\com\bplus\natmar\LoginDetails.class (Too many open files)
Please remove or make sure it appears in the correct subdirectory of the classpath.
(source unavailable)
1 error
]: com.ibm.ws.jsp.JspCoreException: JSPG0049E: /Admin/AdminInsuranceCertificates.jsp failed to compile :
this error always occurs in reference to logindetails class this clas is used to make a session check on different roles in our project for e.g., user having end user role should not be able to log in as a user having admin role
we have included a sessioncheck.jsp in our every jsp page in this jsp we have simply used logindetails class as useBean and called its getresource() method
above stacktrace is from our live application server
while testing same project on our local system we are not getting too many open files exception but we are getting following ClassNotFoundException
[11/30/05 17:11:42:797 EST] 0000004a SystemOut O SELECT count(*) as NoofRecs FROM resourcerolebindings WHERE ResourceName = 'mainEdit.jsp' and IsEndUser=1
[11/30/05 17:12:50:891 EST] 000001eb SystemOut O SELECT count(*) as NoofRecs FROM resourcerolebindings WHERE ResourceName = 'InsuranceCertificates.jsp' and IsEndUser=1
[11/30/05 17:17:40:828 EST] 0000008d SystemOut O AppURL is: http://www.VeroECert.com/Vero/indexU.jsp
[11/30/05 17:17:58:141 EST] 0000008b SystemOut O SELECT count(*) as NoofRecs FROM resourcerolebindings WHERE ResourceName = 'InsuranceCertificates.jsp' and IsEndUser=1
[11/30/05 17:20:41:703 EST] 00000034 ServletWrappe E SRVE0026E: [Servlet Error]-[com.servlet.UserHelpServlet]: java.lang.ClassNotFoundException: com.servlet.UserHelpServlet
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     at com.ibm.ws.classloader.CompoundClassLoader.loadClass(CompoundClassLoader.java(Compiled Code))
     at java.lang.ClassLoader.loadClass(ClassLoader.java(Compiled Code))
     at java.beans.Beans.instantiate(Beans.java:202)
     at java.beans.Beans.instantiate(Beans.java:63)
     at com.ibm.ws.webcontainer.servlet.ServletWrapper$3.run(ServletWrapper.java:1384)
     at com.ibm.ws.security.util.AccessController.doPrivileged(AccessController.java(Compiled Code))
     at com.ibm.ws.webcontainer.servlet.ServletWrapper.loadServlet(ServletWrapper.java(Compiled Code))
     at com.ibm.ws.webcontainer.servlet.ServletWrapper.initialize(ServletWrapper.java:1312)
     at com.ibm.wsspi.webcontainer.extension.WebExtensionProcessor.createServletWrapper(WebExtensionProcessor.java:84)
     at com.ibm.ws.webcontainer.extension.InvokerExtensionProcessor.handleRequest(InvokerExtensionProcessor.java:238)
     at com.ibm.ws.webcontainer.webapp.WebApp.handleRequest(WebApp.java:2841)
     at com.ibm.ws.webcontainer.webapp.WebGroup.handleRequest(WebGroup.java:220)
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     at com.ibm.ws.http.channel.inbound.impl.HttpInboundLink.handleDiscrimination(HttpInboundLink.java(Compiled Code))
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     at com.ibm.ws.util.ThreadPool$Worker.run(ThreadPool.java(Compiled Code))
this error is occuring on concurrent clicks suppose three users click on same button then it is possible that one user gets correct output while other users experience this exception
Also one more point we are not using web.xml for calling servlets we are directly calling it giving its full path.
Thanks

"java.io.IOException: Too many open files" in LinuX

Hi Developers,
* I am continiously running and processing more than 2000 XML files by using SAX and DOM.....
* My process is as follows,
- Converting the XML file as Document object by DOM....
- And that DOM will be used while creating log file report, that log file will be created after executing all XML files..
* After processing approx 1000 files, it throws *"java.io.IOException: Too many open files" in LinuX system* ....
* I have googled more and more in all sites including sun forum also, but they are telling only to increase the system config by ULIMIT in linux....If i increase that its executing well without exception........
* My question is, Is it possible to do it by JAVA code itself or any other VM arguments like -Xms512m and -Xmx512m.....
* Please let me know , if you have any idea.....
Thanks And Regards,
JavaImran

Doh! I forgot to post my little code sample...
package forums.crap;
import java.io.*;
import java.util.*;
public class TooManyFileHandles
private static final int HOW_MANY = 8*1024;
public static void main(String[] args) {
    List<PrintWriter> writers = new ArrayList<PrintWriter>(HOW_MANY);
    try {
      try {
        for (int i=1; i<=HOW_MANY; i++ ) {
          writers.add(new PrintWriter("file"+i+".txt"));
      } finally {
        for (PrintWriter w : writers) {
          if(w!=null)w.close();
    } catch (Exception e) {
      e.printStackTrace();
}... and the problem still isn't OOME ;-)
Cheers. Keith.

RE: (forte-users) [UNIX] "Too many open files" 3.0.M2question

Actually, the stuff works in interpreted mode.
It's only when having the server partition compiled that this happen.
j-p
-----Message d'origine-----
De: Adamek, Zenon [mailto:ZAdamekpurolator.com]
Date: lundi 25 septembre 2000 17:13
À: 'Jean-Paul.Gabriellisema.fr'
Cc: Forte-userslists.xpedior.com
Objet: RE: (forte-users) [UNIX] "Too many open files" 3.0.M2 question
see Technote 10981
-----Original Message-----
From: Jean-Paul Gabrielli [SMTP:Jean-Paul.Gabriellisema.fr]
Sent: Monday, September 25, 2000 11:02 AM
To: zeForte-users
Subject: (forte-users) [UNIX] "Too many open files" 3.0.M2 question
Hi,
running a server partition that reads a configuration file,
and apparently doen't close it after, I have that exception:
SYSTEM ERROR: System Error: Too many open files, opening '....'with mode
'r'
Class: qqos_FileResourceException
1) Is there such a limit, or does this rely only on the OS one ?
2) How is this error not trapped, as I only got itinteractively, whereas
my server log does a exception trap/segmentation fault,
thanlks
j-p
For the archives, go to: http://lists.xpedior.com/forte-users and use
the login: forte and the password: archive. To unsubscribe,send in a new
email the word: 'Unsubscribe' to: forte-users-requestlists.xpedior.com

Hi Jean-Paul,
As described in the Technote 10981 some Forte programs (Nodemanager and
router) handle correct the high-file descriptor-use problem. It is possible
that Forte interpreter do it correct too.
Zenon
-----Original Message-----
From: Jean-Paul Gabrielli [SMTP:Jean-Paul.Gabriellisema.fr]
Sent: Monday, September 25, 2000 12:11 PM
To: Adamek, Zenon
Cc: Forte-userslists.xpedior.com
Subject: RE: (forte-users) [UNIX] "Too many open files" 3.0.M2
question
Actually, the stuff works in interpreted mode.
It's only when having the server partition compiled that this happen.
j-p
-----Message d'origine-----
De: Adamek, Zenon [mailto:ZAdamekpurolator.com]
Date: lundi 25 septembre 2000 17:13
À: 'Jean-Paul.Gabriellisema.fr'
Cc: Forte-userslists.xpedior.com
Objet: RE: (forte-users) [UNIX] "Too many open files" 3.0.M2 question
see Technote 10981
-----Original Message-----
From: Jean-Paul Gabrielli [SMTP:Jean-Paul.Gabriellisema.fr]
Sent: Monday, September 25, 2000 11:02 AM
To: zeForte-users
Subject: (forte-users) [UNIX] "Too many open files" 3.0.M2 question
Hi,
running a server partition that reads a configuration file,
and apparently doen't close it after, I have that exception:
SYSTEM ERROR: System Error: Too many open files, opening '....'with mode
'r'
Class: qqos_FileResourceException
1) Is there such a limit, or does this rely only on the OS one ?
2) How is this error not trapped, as I only got itinteractively, whereas
my server log does a exception trap/segmentation fault,
thanlks
j-p
For the archives, go to: http://lists.xpedior.com/forte-users and use
the login: forte and the password: archive. To unsubscribe,send in a new
email the word: 'Unsubscribe' to:
forte-users-requestlists.xpedior.com
>
For the archives, go to: http://lists.xpedior.com/forte-users and use
the login: forte and the password: archive. To unsubscribe, send in a new
email the word: 'Unsubscribe' to: forte-users-requestlists.xpedior.com

WLS 92MP1: Application Poller issue Too many open files

Hi,
We have a wls92mp1 domain on linux AS4(64bit) with Sun jdk 1.5.0_14. It contains only Admin server where we have deployed the application. Over a period of time the server start showing up below message in the logs. We have not deployed the application from autodeploy directory. And the file "/home/userid/wls92/etg/servers/userid_a/cache/.app_poller_lastrun " is available in the location, still it throws FileNotFoundException.
<Error> <Application Poller> <BEA-149411> <I/O exception encountered java.io.FileNotFoundException: /home/userid/wls92/etg/servers/userid_a/cache/.a
pp_poller_lastrun (Too many open files).
java.io.FileNotFoundException: /home/userid/wls92/etg/servers/userid_a/cache/.app_poller_lastrun (Too many open files)
at java.io.FileOutputStream.open(Native Method)
at java.io.FileOutputStream.<init>(FileOutputStream.java:179)
at java.io.FileOutputStream.<init>(FileOutputStream.java:131)
at java.io.FileWriter.<init>(FileWriter.java:73)
at weblogic.management.deploy.GenericAppPoller.setLastRunFileMap(GenericAppPoller.java:423)
Any help regarding this would be highly appreciated.
Thanks.

Hi,
By above seeing in error, this error code (BEA-149411) describe the following
149411: I/O exception encountered {0}.
L10n Package: weblogic.management.deploy.internal
I18n Package: weblogic.management.deploy.internal
Subsystem: Application Poller
Severity: Error
Stack Trace: true
Message Detail: An I/O exception denotes a failure to perform a read/write operation on the application files.
Cause: An I/O exception can occur during file read/write while deploying an application.
Action: Take corrective action based on the exception message details.
i think it helps u.
-abhi

Getting java.io.FileNotFoundException: Too many open files

I have search for different strings in a file again and again. I am using following code:
try
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1. Whats the main reason of this exception and how can it be removed.
2. Is there any way to move the pointer to the start of the file. I tried reset() but its seems to have some problem.
-vc

A hint: your fileReaderObject is not closed if an exception occurs.
Lacking desctructors, the Java-ish way is to close in a finally clause.

Suddenly getting "Too Many Open File" error

Dear All,
I have listener program which have been working well for the past few months. Suddenly I start to get "Too Many Open File" error. What can be solution? Is it I need to increase the file descriptors or any other solution? Thank you.

Dear Ejp,
Attached below is my codes. I have remove some of the fields for db just to make the code a bit more easier to read. Where do you think is leaking?
public class commServer {
public static void main(String[] args) {
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new Thread(new ConnectionHandler(socketConn1)).start();
                              catch(Exception e)
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catch (Exception e)
System.out.println(e.toString());
//System.exit(0);
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private Socket receivedSocketConn1;
DateFormat dateFormat = new SimpleDateFormat("dd/MM/yyyy HH:mm:ss");
DateFormat formatter = new SimpleDateFormat("EEE, dd MMM yyyy");
DateFormat inDf=new SimpleDateFormat("ddMMyyHHmmss");
DateFormat outDf=new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
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this.receivedSocketConn1=receivedSocketConn1;
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r = new BufferedReader(new InputStreamReader(receivedSocketConn1.getInputStream()));
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w.write("$PA\n");
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boolean append = true;
FileWriter fw = null;
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                         String deviceID=result[3].trim();
                         String dateTime=result[4].trim();
                         String[] result2 = result[10].split("'");
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                         String gpsTime = result2[1].trim().substring(6,12);
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                         System.out.println("MyError:Parse Error has been caught for date parse close");
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               String selectQuery2 = "Select * from tripData Where deviceID='"+ deviceID +"' and dateTimer>'"+dateTimer+"' Order By dateTimer Desc Limit 1";
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                    String previousLatitude="";
                    String previousLongitude="";
                    String previousSpeed="";
                    previousLatitude = rs2.getString("latitude");
                    previousLongitude = rs2.getString("longitude");
                    previousSpeed = rs2.getString("speed");
                    updateQuery = "UPDATE device SET " +
                                   "latitude='" + previousLatitude +
                                   "',longitude='" + previousLongitude +
                                   "',speed='" + previousSpeed +
                                   "' WHERE serialNumber='" + deviceID + "'";
               else
               updateQuery = "UPDATE device SET " +
                                   "latitude='" + latitude +
                                   "',longitude='" + longitude +
                                   "',speed='" + speed +
                                   "',course='" + course +
                                   "',dateTimer='" + dateTimer +
                                   "' WHERE serialNumber='" + deviceID + "'";
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               String insertQuery = "INSERT INTO tripData" +
                                   "(latitude,longitude,speed,course,dateTimer,deviceID)" + " VALUES ('" +
                                   latitude + "','" + longitude + "','" + speed + "','" + course + "','" + dateTimer + "','" + deviceID + "' )";
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          if(addExist!=-1)
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                                        String[] slaveDetails = slave[iSlave].split(",",-1);
                                        String slaveEventType = slaveDetails[0];
                                        String slaveGroup = slaveDetails[1];
                                        String slaveUnitID = slaveDetails[2];
                                        String slaveBattLevel = slaveDetails[3];
                                        String slaveSwitchStat = slaveDetails[4];
                                        String slaveTempHumid = slaveDetails[5];
                                   String slaveTemp="",slaveHumid="";
                                   if(slaveTempHumid.length()>0)
                                   slaveHumid = slaveTempHumid.substring(5,7);
                                             if(slaveTempHumid.charAt(0)=='P')
                                             slaveTemp = "+"+slaveTempHumid.substring(1,3)+"."+slaveTempHumid.substring(3,5);
                                             else if(slaveTempHumid.charAt(0)=='M')
                                             slaveTemp = "-"+slaveTempHumid.substring(1,3)+"."+slaveTempHumid.substring(3,5);
                                   slaveBattLevel = slaveBattLevel.trim().substring(0,2)+"."+slaveBattLevel.trim().substring(2,3);
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                                        "(dateTimer,deviceID,slaveUnitID,slaveEventType,slaveGroup,slaveBattLevel,slaveSwitchStat,slaveTemp,slaveHumidity)" + " VALUES ('" +
                                        dateTimer + "','" + deviceID + "','" + slaveUnitID + "','" + slaveEventType + "','" + slaveGroup + "','" + slaveBattLevel + "','" + slaveSwitchStat + "','" + slaveTemp + "','" + slaveHumid + "')";
          count = stmt.executeUpdate(insertQuery2);
               catch (SQLException ex)
System.out.println("MyError:Error : "+ex);
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                    try
                         if ( stmt != null )
                         stmt.close();
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                              System.out.println("MyError:stmt is null in finally close");
                    catch(SQLException ex){
                    System.out.println("MyError:SQLException has been caught for stmt close");
ex.printStackTrace();
                    try
                         if ( dbconn != null )
                         dbconn.close();
                         else
                         System.out.println("MyError:dbconn is null in finally close");
                    catch(SQLException ex){
                    System.out.println("MyError:SQLException has been caught for dbconn close");
ex.printStackTrace();
     n="";
catch (IOException ex)
System.out.println("MyError:IOException has been caught in in the main first try");
ex.printStackTrace();
finally
try
     if ( w != null )
          w.close();
     else
          System.out.println("MyError:w is null in finally close");
catch(IOException ex){
System.out.println("MyError:IOException has been caught in w in finally close");
ex.printStackTrace();
}

DirectoryService[67]: socket(PF_ROUTE) failed: Too many open files

Hello!
On MacOSX 10.4.10 which is an OD master, my log are filed with this:
DirectoryService[67]: socket(PF_ROUTE) failed: Too many open files
It happens at exactly every hours 44 minutes 18 seconds 161 times. At the same time, it makes a lot dns request for "kerberos-master.udp.XXXXXXXXX.COM IN SRV +"
The server works fine, but there's probably a cronjob that go crazy and i would like to know why it's happening.
Thanks a lot!
Fred

Hi,
Cause might The server got an exception while trying to accept client connections. It will try to backoff to aid recovery.
The OS limit for the number of open file descriptor (FD limit) needs to be increased. Tune OS parameters that might help the server to accept more client connections (e.g. TCP accept back log).
http://e-docs.bea.com/wls/docs90/messages/Server.html#BEA-002616
Regards,
Prasanna Yalam

IPad - too many open files

Hello, I am trying to update a couple apps on my ipad 2 over wifi. (sudoku, twitter, rummikub)
I am logged in correctly,
No apps are currently open (except app store).
When I type in my apple id password to update all 3, a text box comes up and says "too many open files". and then gives me the option to cancel or retry.
I have tried a hard reset and the problem continues.
I have also tried to update the apps individually and each one has the same error.
Suggestions?
Thanks

Received the same error.
I had previously disconnected from iTunes without ejecting it.
I connected my Ipad3 to my Laptop/itunes and Ejected it from iTunes.
Error cleared up.

Java.io.IOException: Too many open files while deploying in soa 11g

hi all,
I am getting a strange error while deploying any composite .. it's a hello world kinda composite but while i am trying to deploy it i am getting "java.io.IOException: Too many open files" while deployment.. i have tried to deploy it in 2-3 ways but all of them resulted in the same error..bouncing the soa server might be an option but can someone give an insight as why it is happening and can it be resolved without restarting the server..
Thanks

yes..so this problem is with unix only ..coz i previously worked in Windows ..never got this problem..

STARTING DATABASE : PROBLEM OF Linux Error: 23: Too many open files in syst

Hi everybody,
I am running an RMAN script and get this error,
9> @/u01/app/oracle/admin/devpose/backup/configuration.rcv
RMAN> ###################################################################
2> # Configuration file used to set Rman policies.
3> #
4> ###################################################################
5>
6> CONFIGURE DEFAULT DEVICE TYPE TO DISK;
RMAN-00571: ===========================================================
RMAN-00569: =============== ERROR MESSAGE STACK FOLLOWS ===============
RMAN-00571: ===========================================================
RMAN-03002: failure of configure command at 08/26/2009 20:03:30
RMAN-06403: could not obtain a fully authorized session
ORA-01034: ORACLE not available
RMAN> CONFIGURE RETENTION POLICY TO REDUNDANCY 1;
RMAN-00571: ===========================================================
RMAN-00569: =============== ERROR MESSAGE STACK FOLLOWS ===============
RMAN-00571: ===========================================================
RMAN-03002: failure of configure command at 08/26/2009 20:03:30
RMAN-06403: could not obtain a fully authorized session
ORA-01034: ORACLE not available
RMAN> #CONFIGURE RETENTION POLICY TO RECOVERY WINDOW OF 7 DAYS;
2> CONFIGURE DEVICE TYPE DISK PARALLELISM 2;
RMAN-00571: ===========================================================
RMAN-00569: =============== ERROR MESSAGE STACK FOLLOWS ===============
RMAN-00571: ===========================================================
RMAN-03002: failure of configure command at 08/26/2009 20:03:30
RMAN-06403: could not obtain a fully authorized session
ORA-01034: ORACLE not available
RMAN>
RMAN> CONFIGURE CHANNEL DEVICE TYPE DISK FORMAT '/u01/app/oracle/backup/db/ora_df%t_s%s_s%p';
RMAN-00571: ===========================================================
RMAN-00569: =============== ERROR MESSAGE STACK FOLLOWS ===============
RMAN-00571: ===========================================================
RMAN-03002: failure of configure command at 08/26/2009 20:03:30
RMAN-06403: could not obtain a fully authorized session
ORA-01034: ORACLE not available
But this problem is understandable, as the database is not running. The main problem why database is not running, I have found the reason but do not understand how to solve the problem.
Since, the database was not running, I tried to startup the database, I then came across the following which is my problem (Why so many files are open? Linux OS error says too many files open. See below,
SQL> conn /as sysdba
Connected to an idle instance.
SQL> startup
ORACLE instance started.
Total System Global Area 419430400 bytes
Fixed Size 779516 bytes
Variable Size 258743044 bytes
Database Buffers 159383552 bytes
Redo Buffers 524288 bytes
Database mounted.
ORA-00313: open failed for members of log group 2 of thread 1
ORA-00312: online log 2 thread 1: '/u01/app/oracle/oradata/devpose/redo02.log'
ORA-27041: unable to open file
Linux Error: 23: Too many open files in system
Can anybody has run into such problem and guide me to a solution, please?
Thanks

Hi,
yes, this DB was functioning o.k. this configuration script was part of RMAN daily backup.
Last night the backup failed. So, when I opened "Failed job" in the EM, I saw this type of messages.
That was the starting point. Gradually, I tried to narrow down on to the actual problem and found the findings as I have posted.
One way of sovling problem, I thought that, all these processes I would kill and then try to open the database, it might startup. However, that wouldnot lead me in ensuring this won't occur again.
That's why I am trying to understand why it should open, so many processes (why spawn so many .flb files?) Any thoughts you have around this?
I will try to restart the OS as the last resort.
Thanks for your help and suggestions.
Regards,

WLS 10.3.5 on RHEL 5.4, SocketException: Too many open files

Hi
I'm running Weblogic server 10.3.5 on Red Hat Enterprise Linux Server release 5.4 (Tikanga), with Java jdk1.6.0_27.
My order handling application, when receiving client orders, needs to make outbound SOAP calls to fulfill the order. During a performance test, we got following errors:
####<Feb 10, 2012 2:28:41 PM ICT> <Critical> <Server> <KKMOMAPP2> <KKMOMPE2> <DynamicListenThread[Default]> <<WLS Kernel>> <> <> <1328858921806> <BEA-002616> <Failed to listen on channel "Default" on 172.24.106.81:4095, failure count: 1, failing for 0 seconds, java.net.SocketException: Too many open files>
I monitored the java process of this application, when the "Too many open files" error happened, it had 1388 open file descriptors, among which 655 were sockets.
I also monitored the total open file descriptors of the weblogic user account, the count was around 6300 during this error.
These numbers are far smaller than the file limits configured on OS:
- Under weblogic account, ulimit -n shows 65536
- /proc/sys/fs/file-max shows 772591
- Following lines are already in /etc/security/limits.conf
weblogic soft nofile 65536
weblogic hard nofile 65536
weblogic soft nproc 16384
weblogic hard nproc 16384
I did another test using a simple java program to open large number of sockets under weblogic account. It has no problem to open 15,000 sockets. It seems the file descriptor limit is indeed quite high, but for some reasons, the Weblogic process fails even when it has merely 1388 open files. Are there other Linux or Weblogic parameters I should tune? Or anything else I missed?
Thank you very much
Ning

Hi All,
Any help on this issue ?
Thank you,
Ram

Java.util.zip.ZipException: Too many open files on Linux

Hi,
We have web application running on Caucho's resin server on jdk 1.5.0_11 and Red hat Linux. We are noticing that java process is running out of file handles within 24-30 hours. We have file limit of 5000 which it consumes in 24 hours throwing 'java.util.zip.ZipException: Too many open files'.
I have made sure all sorts of file handles are closed from application point of view. Here is the snapshot of lsof (list of file handles) from java process. The following list keeps growing until it runs out of limit. Do you have tips/suggestions on how to mitigate this problem (considering we dont want to increase ulimit for this process)? Also, can you make out any thing more from the description of file handles like, are they unclosed POP3 connections or URL connection to external sites?
java 7156 resin 120u IPv4 34930051 UDP localhost.localdomain:59693
java 7156 resin 121u IPv4 34927823 UDP localhost.localdomain:59663
java 7156 resin 122u IPv4 34931861 UDP localhost.localdomain:59739
java 7156 resin 123u IPv4 34932023 UDP localhost.localdomain:59745
java 7156 resin 124u IPv4 34930054 UDP localhost.localdomain:59700
java 7156 resin 125u IPv4 34927826 UDP localhost.localdomain:59665
java 7156 resin 126u IPv4 34927829 UDP localhost.localdomain:59666
java 7156 resin 127u IPv4 34930057 UDP localhost.localdomain:59703
java 7156 resin 128u IPv4 34930713 UDP localhost.localdomain:59727
java 7156 resin 129u IPv4 34930716 UDP localhost.localdomain:59730
java 7156 resin 130u IPv4 34932238 UDP localhost.localdomain:59789
java 7156 resin 131u IPv4 34932026 UDP localhost.localdomain:59749
java 7156 resin 132u IPv4 34932221 UDP localhost.localdomain:59770
java 7156 resin 133u IPv4 34932224 UDP localhost.localdomain:59775
java 7156 resin 134u IPv4 34932029 UDP localhost.localdomain:59753
java 7156 resin 135u IPv4 34932032 UDP localhost.localdomain:59754
java 7156 resin 138u IPv4 34932035 UDP localhost.localdomain:59760
java 7156 resin 139u IPv4 34932038 UDP localhost.localdomain:59763
java 7156 resin 140u IPv4 34932227 UDP localhost.localdomain:59780
java 7156 resin 141u IPv4 34932230 UDP localhost.localdomain:59781
java 7156 resin 144u IPv4 34932234 UDP localhost.localdomain:59786
java 7156 resin 146u IPv4 34932241 UDP localhost.localdomain:59792
java 7156 resin 147u IPv4 34932247 UDP localhost.localdomain:59802

Finally we resolved this issue. It was oracle driver which had some compatibility issue, we upgraded our Oracle client driver to newer version, and this fixed the problem. Base line, there was nothing wrong with application code, code was doing good resource clean up, but oracle driver was leaking handles per every connection.

Intermittent too many open files error and Invalid TLV error

Post Author: jam2008
CA Forum: General
I'm writing this up in the hopes of saving someone else a couple of days of hair-pulling...
Environment: Crystal Reports XI Enterprise / also runtime via Accpac ERP 5.4
Invalid TLV error in Accpac
"too many open files" error in event.log file
Situation:
Invalid TLV error occurs seemingly randomly on report created in CR Professional 11. Several days of troubleshooting finally lead to the following diagnosis:
This error occurs in a report that contains MORE THAN 1 bitmap image.
The error only shows up after 20 or more reports have been generated sequentially, WITHOUT CLOSING the application that is calling the report. In our case the Invoice Report dialog within Accpac. This same error occurred in a custom 3rd party VB.NET app that also called the report through an Accpac API.

after getting this message you need to do 2 things:
1. delete the current workspace because it contains some bad data in one the config files - failure to delete the workspace will result the error message to appear even if trying to upload a single file.
2. add to DTR files in groups - no more than 500 in a single add.

"Too many open files" Exception on "tapestry-framework-4.1.1.jar"

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