Tomcat error - SocketException: Too many open files
I periodically get this error in Tomcats CiscoWorkds Home/MDC/tomcat/logs/stdout.log file. The symptom occurs after logging in and opening any page on the CiscoWorks Web portal ( eg Common Services ). Several applets fail to load, and I'll see the error included in the attached file come up repeatedly after each page refresh.
After quite a bit of research, I found many recommendations to increase the ulimit for files, using the "ulimit -n" command. I've upped it to "unlimited" and thne problem continues to reoccur.
Here's my environment:
LMS 3.2
Solaris 10 (patched up to the April 2011 CPU )
64 bit SPARC processor
Java Runtime Engine 1.5.0_28
Any more ideas? This might be a case where I need to increase a max network connections setting for each of the Tomcat applications. I've never done that, but that's my best guess.
The dmgtd script sets the number of files for casuser processes. Setting the limit outside of dmgtd will not be helpful. Tomcat should not be running out of file descriptors. When the problem happens again, post the output of pfiles for the Tomcat PID (use pdshow to find the PID for Tomcat). There may be a file descriptor leak somewhere.
Similar Messages
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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
NingHi All,
Any help on this issue ?
Thank you,
Ram -
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?
ThanksHi,
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, -
Linux Error: 23: Too many open files in system
I crashed the my oracle instance with the following error:
Tue Feb 13 22:15:16 2001
Errors in file /home/oracle/product/8.1.6/admin/v2qa1/bdump/lgwr_14175.trc:
ORA-00313: open failed for members of log group 2 of thread 1
ORA-00312: online log 2 thread 1: '/db03/v2qa1/system/log/redo02.log'
ORA-27041: unable to open file
Linux Error: 23: Too many open files in system
Additional information: 2
LGWR: terminating instance due to error 313
Instance terminated by LGWR, pid = 14175
Is the number of open files adjustable?
Why am I opening files?
Could the fact that our java stored procedures are trying, unsuccessfully, be leaving files open?
Thanks - Craig
nullincreasing the oracle users ulimit to unlimited fixed that error for me. Type
ulimit -a
and look at the open files parameter. See your linux doc's to increase it to unlimited (will probably be increased from 1024 to 4096). -
Weblogic Server Switch over automatically due to too many open files error.
Hi,
I am facing problem in production environment. I am using Weblogic 8.1 SP4 application.
Weblogic Server automatically switch over every 3 weeks due to few reasons.
1. out of memorry error.
2. Too many open files error.
Please see my below portalserver. log files. Kindly provide some good solution to solve this problem.
The following log is portalserver.log file
###<May 6, 2009 8:28:15 PM ICT> <Notice> <WebLogicServer> <ebizdr> <portalServer> <ListenThread.Default> <<WLS Kernel>> <> <BEA-000205> <After having failed to listen, the server is now listening on port 9001.>
####<May 6, 2009 8:28:15 PM ICT> <Critical> <WebLogicServer> <ebizdr> <portalServer> <ListenThread.Default> <<WLS Kernel>> <> <BEA-000204> <Failed to listen on port 9001, failure count: 1, failing for 0 seconds, java.net.SocketException: Too many open files>
####<May 6, 2009 8:28:15 PM ICT> <Error> <HTTP> <ebizdr> <portalServer> <ExecuteThread: '5' for queue: 'default'> <<WLS Kernel>> <> <BEA-101019> <[ServletContext(id=18480784,name=NBIAProject,context-path=)] Servlet failed with IOException
java.io.FileNotFoundException: /var/opt/weblogic/user_projects/domains/eBizPortalDomain/portalServer/.wlnotdelete/NBIAPortalApp/NBIAProject/images/go.gif (Too many open files)
at java.io.FileInputStream.open(Native Method)
at java.io.FileInputStream.<init>(FileInputStream.java:106)
at weblogic.utils.classloaders.FileSource.getInputStream(FileSource.java:23)
at weblogic.servlet.FileServlet.sendFile(FileServlet.java:563)
at weblogic.servlet.FileServlet.service(FileServlet.java:206)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
at weblogic.servlet.internal.ServletStubImpl$ServletInvocationAction.run(ServletStubImpl.java:1006)
at weblogic.servlet.internal.ServletStubImpl.invokeServlet(ServletStubImpl.java:419)
at weblogic.servlet.internal.TailFilter.doFilter(TailFilter.java:28)
at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:27)
at com.bea.p13n.servlets.PortalServletFilter.doFilter(PortalServletFilter.java:293)
at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:27)
at weblogic.servlet.internal.WebAppServletContext$ServletInvocationAction.run(WebAppServletContext.java:6724)
at weblogic.security.acl.internal.AuthenticatedSubject.doAs(AuthenticatedSubject.java:321)
at weblogic.security.service.SecurityManager.runAs(SecurityManager.java:121)
at weblogic.servlet.internal.WebAppServletContext.invokeServlet(WebAppServletContext.java:3764)
at weblogic.servlet.internal.ServletRequestImpl.execute(ServletRequestImpl.java:2644)
at weblogic.kernel.ExecuteThread.execute(ExecuteThread.java:219)
at weblogic.kernel.ExecuteThread.run(ExecuteThread.java:178)
>
####<May 6, 2009 8:28:16 PM ICT> <Notice> <WebLogicServer> <ebizdr> <portalServer> <ListenThread.Default> <<WLS Kernel>> <> <BEA-000205> <After having failed to listen, the server is now listening on port 9001.>
####<May 6, 2009 8:28:16 PM ICT> <Critical> <WebLogicServer> <ebizdr> <portalServer> <ListenThread.Default> <<WLS Kernel>> <> <BEA-000204> <Failed to listen on port 9001, failure count: 1, failing for 0 seconds, java.net.SocketException: Too many open files>
####<May 6, 2009 8:28:16 PM ICT> <Error> <HTTP> <ebizdr> <portalServer> <ExecuteThread: '5' for queue: 'default'> <<WLS Kernel>> <> <BEA-101019> <[ServletContext(id=18480784,name=NBIAProject,context-path=)] Servlet failed with IOException
java.io.FileNotFoundException: /var/opt/weblogic/user_projects/domains/eBizPortalDomain/portalServer/.wlnotdelete/NBIAPortalApp/NBIAProject/images/search_right.gif (Too many open files)
Thanks & Regards,
Suriyaprakash.VSorry for the late resp. Here's what dev suggests be investigated:
I would want to know:
Can they do a "$ORACLE_HOME/bin/dmstool -dump" and
save/compress/send the results?
Are there any errors printed in the Apache error_log while this leak occurs?
The customer could/should re-check their TCP settings, especially the TCP time wait interval and generally follow the TCP settings recommended in Chapter 5 of the iAS Performance Guide for 9.0.2.
Is there anything else interesting/unusual about the site?
Let us know how it goes. -
Too many open files in system cause database goes down
Hello experts I am very worry because of the following problems. I really hope you can help me.
some server features
OS: Suse Linux Enterprise 10
RAM: 32 GB
CPU: intel QUAD-CORE
DB: There is 3 instances RAC databases (version 11.1.0.7) in the same host.
Problem: The database instances begin to report Error message: Linux-x86_64 Error: 23: Too many open files in system
and here you are other error messages:
ORA-27505: IPC error destroying a port
ORA-27300: OS system dependent operation:close failed with status: 9
ORA-27301: OS failure message: Bad file descriptor
ORA-27302: failure occurred at: skgxpdelpt1
ORA-01115: IO error reading block from file 105 (block # 18845)
ORA-01110: data file 105: '+DATOS/dac/datafile/auditoria.519.738586803'
ORA-15081: failed to submit an I/O operation to a disk
At the same time I search into the /var/log/messages as root user and I the error notice me the same problem:
Feb 7 11:03:58 bls3-1-1 syslog-ng[3346]: Cannot open file /var/log/mail.err for
writing (Too many open files in system)
Feb 7 11:04:56 bls3-1-1 kernel: VFS: file-max limit 131072 reached
Feb 7 11:05:05 bls3-1-1 kernel: oracle[12766]: segfault at fffffffffffffff0 rip
0000000007c76323 rsp 00007fff466dc780 error 4
I think I get clear about the cause, maybe I need to increase the fs.file-max kernel parameter but I do not know how to set a good value. Here you are my sysctl.conf file and the limits.conf file:
sysctl.conf
kernel.shmall = 2097152
kernel.shmmax = 17179869184
kernel.shmmni = 4096
kernel.sem = 250 32000 100 128
fs.file-max = 6553600
net.ipv4.ip_local_port_range = 1024 65000
net.core.rmem_default = 4194304
net.core.rmem_max = 4194304
net.core.wmem_default = 262144
net.core.wmem_max = 4194304
limits.conf
oracle soft nproc 2047
oracle hard nproc 16384
oracle soft nofile 1024
oracle hard nofile 65536process limit
bcm@bcm-laptop:~$ ulimit -a
core file size (blocks, -c) 0
data seg size (kbytes, -d) unlimited
scheduling priority (-e) 20
file size (blocks, -f) unlimited
pending signals (-i) 16382
max locked memory (kbytes, -l) 64
max memory size (kbytes, -m) unlimited
open files (-n) 1024
pipe size (512 bytes, -p) 8
POSIX message queues (bytes, -q) 819200
real-time priority (-r) 0
stack size (kbytes, -s) 8192
cpu time (seconds, -t) unlimited
max user processes (-u) unlimited
virtual memory (kbytes, -v) unlimited
file locks (-x) unlimited -
"Too many open files" - Mac OS X 10.7.5
I'm getting errors about "Too many open files" when trying to use Berkeley DB on Mac OS X 10.7.5.
The BerkeleyDB site mentions this, but it goes back to 2003 and refers to a file which doesn’t exist in OS X 10.7.5:
http://docs.oracle.com/cd/E17076_03/html/installation/build_unix_macosx.html
I tried ulimit, but it doesn't seem to have any affect:
$ sudo ulimit -n 1024 1024
Password:
$ ulimit -a
core file size (blocks, -c) 0
data seg size (kbytes, -d) unlimited
file size (blocks, -f) unlimited
max locked memory (kbytes, -l) unlimited
max memory size (kbytes, -m) unlimited
open files (-n) 256
pipe size (512 bytes, -p) 1
stack size (kbytes, -s) 8192
cpu time (seconds, -t) unlimited
max user processes (-u) 709
virtual memory (kbytes, -v) unlimited
Any suggestions?
Thanks,
James.sudo sysctl -w kern.maxfiles=32768
sudo sysctl -w kern.maxprocperuid=16384
seemed to work.
Created file /etc/sysctl.conf containing:
kern.maxfiles=32768
kern.maxprocperuid=16384
so that the setting would survive a reboot.
Hopefully that permanently fixes it. -
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. -
WL10 Compiler executable.exec error "too many open files" deploying ear
When I try to deploy an ear containing a web module and some ejb modules, I obtain this error:
<Info> <J2EE Deployment SPI> <BEA-260121> <Initiating deploy operation for application, MB-ADM_EAR [archive: /wl/wlments/MB-ADM_EAR/MB-ADM_EAR.ear], to Cluster1 .>
Task 1 initiated: [Deployer:149026]deploy application MB-ADM_EAR on Cluster1.
Task 1 failed: [Deployer:149026]deploy application MB-ADM_EAR on Cluster1.
Target state: deploy failed on Cluster Cluster1
java.io.IOException: Compiler failed executable.exec:
/wl/servers/MS1/cache/EJBCompilerCache/-1dj0waj53cbu8/it/apps/ejbs/core/ExSvc_167qnt_Impl.java:17: error while writing it.apps.ejbs.core.ExSvc_167qnt_Impl: /wl/servers/MS1/cache/EJBCompilerCache/-1dj0waj53cbu8/it/apps/ejbs/core/ExSvc_167qnt_Impl.class (Too many open files)If i split the ear in two parts, web in one ear and ejbs in another ear, deploy is succesfull.
Do you have any idea of what is happening?
Below the environment specifications:
JVM Version: jrockit_150_11
JVM Heap: 512
Web Logic: 10.0.1.0
Server: Hewlett Packard DL585 G2
OS: Linux / 2.6.5-7.287.3.PTF.345489.1-smp
Thank you, bye,
MarcoHello Marco.
When you try to deploy an EAR weblogic server at the time of deployment unjar's it and compiles the files and so on. Every Operating system has a limit on how many number of files can be opened by a process. If your EAR is big then the number of files which WLS will unjar will also be large hence you hit the limit. By splitting your ear into 2, you are splitting wls task into smaller parts, which means the number of files it unjars at a time is less.
The following note tells what needs to be done to avert this issue.
http://download.oracle.com/docs/cd/E12839_01/doc.1111/e14772/weblogic_server_issues.htm#CHDGFFHD -
10/29/11 10:29:17.285 PM vpnagentd: [p:133 pp:1]: error - TunTapMgr.cpp:209 (fe09000a) CTunTapMgr::openDevice
10/29/11 10:29:17.285 PM vpnagentd: [p:133 pp:1]: error - TunTapMgr.cpp:1257 (18) socket Too many open files
10/29/11 10:29:17.285 PM vpnagentd: [p:133 pp:1]: error - TunTapMgr.cpp:340 (fe09000b) CTunTapMgr::disableHostMgr
10/29/11 10:29:22.286 PM vpnagentd: [p:133 pp:1]: error - TunTapMgr.cpp:259 (18) open Too many open files
10/29/11 10:29:22.286 PM vpnagentd: [p:133 pp:1]: error - TunTapMgr.cpp:209 (fe09000a) CTunTapMgr::openDevice
10/29/11 10:29:22.286 PM vpnagentd: [p:133 pp:1]: error - TunTapMgr.cpp:1257 (18) socket Too many open files
10/29/11 10:29:22.286 PM vpnagentd: [p:133 pp:1]: error - TunTapMgr.cpp:340 (fe09000b) CTunTapMgr::disableHostMgr
10/29/11 10:29:27.287 PM vpnagentd: [p:133 pp:1]: error - TunTapMgr.cpp:259 (18) open Too many open files
What could this mean? It keeps appearing on my console. I"m trying to install a Fitbit Tracker and can't get it to recognize the device. wondering if this has something to do with it. Thanks!It means you've installed some kind of third-party VPN software that isn't working.
-
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) {
try {
final ServerSocket serverSocketConn = new ServerSocket(8888);
while (true)
try
Socket socketConn1 = serverSocketConn.accept();
new Thread(new ConnectionHandler(socketConn1)).start();
catch(Exception e)
System.out.println(e.toString());
catch (Exception e)
System.out.println(e.toString());
//System.exit(0);
class ConnectionHandler implements Runnable {
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");
ConnectionHandler(Socket receivedSocketConn1) {
this.receivedSocketConn1=receivedSocketConn1;
//@Override
public void run() {
Connection dbconn = null;
BufferedWriter w = null;
BufferedReader r = null;
try {
PrintStream out = System.out;
BufferedWriter fout = null;
w = new BufferedWriter(new OutputStreamWriter(receivedSocketConn1.getOutputStream()));
r = new BufferedReader(new InputStreamReader(receivedSocketConn1.getInputStream()));
int m = 0, count=0;
String line="";
String n="";
w.write("$PA\n");
w.flush();
while ((m=r.read()) != -1)
Date dateIn = new Date();
n = n + (char) m;
int i = n.indexOf("GET");
if(i != -1) {
break;
if (m==35)
String ori = n;
String noCheckSum = n.substring(0,(n.length()-4));
int addExist = n.indexOf("@");
String[] slave = null;
if(addExist!=-1)
slave = noCheckSum.split("@");
n = slave[0];
//System.out.println(" slave : "+slave.length);
else
n = noCheckSum;
String[] result = n.split(",");
Statement stmt = null;
w.write("$PA\n");
w.flush();
int count1 = 0;
Date date = Calendar.getInstance().getTime();
String today = formatter.format(date);
String filename= "MyDataFile"+today+".txt";
boolean append = true;
FileWriter fw = null;
try
fw = new FileWriter(filename,append);
fw.write(ori+" "+dateFormat.format(dateIn)+"\n");//appends the string to the file
Date dateOut = new Date();
fw.write("$PA"+" "+dateFormat.format(dateOut)+"\n");//appends the string to the file
catch (IOException ex)
//ex.printStackTrace(new PrintWriter(sWriter));
System.out.println("MyError:IOException has been caught in in the file operation");
ex.printStackTrace();
finally
try
if ( fw != null )
fw.close();
else
System.out.println("MyError:fw is null in finally close");
catch(IOException ex){
System.out.println("MyError:IOException has been caught in fw is null in finally close");
ex.printStackTrace();
try
String deviceID=result[3].trim();
String dateTime=result[4].trim();
String[] result2 = result[10].split("'");
String gpsDate = result2[1].trim().substring(0,6);
String gpsTime = result2[1].trim().substring(6,12);
String gpsLat = result2[1].trim().substring(13,20);
String latitude = result2[1].trim().substring(13,20).substring(0,2)+"."+result2[1].trim().substring(13,20).substring(2,7);
String gpsLong = result2[1].trim().substring(21,29);
String longitude = result2[1].trim().substring(21,29).substring(0,3)+"."+result2[1].trim().substring(21,29).substring(3,8);
String speed = result2[1].trim().substring(30,33);
String course = result2[1].trim().substring(33,36);
String dateTimer = null;
try
Date inDate=null;
inDf.setTimeZone(TimeZone.getTimeZone("UTC"));
inDate=inDf.parse(dateTime);
outDf.setTimeZone(TimeZone.getTimeZone("Asia/Kuala_Lumpur"));
dateTimer=outDf.format(inDate);
catch(ParseException ex)
System.out.println("MyError:Parse Error has been caught for date parse close");
ex.printStackTrace();
dbconn = DriverManager.getConnection("jdbc:mysql://192.168.1.155:3306/db1?"+"user=db1&password=test1");
stmt = dbconn.createStatement();
String selectQuery2 = "Select * from tripData Where deviceID='"+ deviceID +"' and dateTimer>'"+dateTimer+"' Order By dateTimer Desc Limit 1";
ResultSet rs2 = stmt.executeQuery(selectQuery2);
String updateQuery = "";
if(rs2.next())
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 + "'";
count = stmt.executeUpdate(updateQuery);
String insertQuery = "INSERT INTO tripData" +
"(latitude,longitude,speed,course,dateTimer,deviceID)" + " VALUES ('" +
latitude + "','" + longitude + "','" + speed + "','" + course + "','" + dateTimer + "','" + deviceID + "' )";
count = stmt.executeUpdate(insertQuery);
if(addExist!=-1)
for(int iSlave=1; iSlave<slave.length ; iSlave++)
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);
String insertQuery2 = "INSERT INTO tripDataSlave" +
"(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);
finally
try
if ( stmt != null )
stmt.close();
else
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();
} -
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..
Thanksyes..so this problem is with unix only ..coz i previously worked in Windows ..never got this problem..
-
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 :
Runtime rt = Runtime.getRuntime();
Process process = rt.exec("ssh ...");
// ProcessStreamHolder extends Thread and reads from the InputStream given in constructor...
ProcessStreamHolder errorStream = new ProcessStreamHolder(process.getErrorStream());
ProcessStreamHolder outputStream = new ProcessStreamHolder(process.getInputStream());
errorStream.start();
outputStream.start();
exitValue = process.waitFor();
try {
errorStream.interrupt();
} catch (RuntimeException e) {
logger.warn("...");
try {
outputStream.interrupt();
} catch (RuntimeException e) {
logger.warn("...");
try {
process.getInputStream().close();
} catch (RuntimeException e) {
logger.warn("...");
try {
process.getOutputStream().close();
} catch (RuntimeException e) {
logger.warn("...");
try {
process.getErrorStream().close();
} catch (RuntimeException e) {
logger.warn("...");
process.destroy();Does someone know if my code is wrong or if there's a workaround for me ?
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.
-
"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: 4.1.1Hi,
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 -
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.comHi 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
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