Socket maximum connections reached

hi,
i got this error since fews days. And i do not know what to do with.
java.net.SocketException: No buffer space available (maximum connections reached?): connect
thanks
Herve

How many connections do you need? Are you closing them properly?
file:///D:/Java/jdk1.4.0/docs/api/java/net/ServerSocket.html#ServerSocket(int,%20int)

Similar Messages

ORA - Maximum Connections Reached

Dear All
Even after implementing Connection pooling in our Application , we very often get this error "150 process exceede- Maximum Connection reached" ? How do we handle this? Our application is about to GoLive in another month .Please help us.
Thanks
AKS

It was simple to plan a download calendar in the case of exceeding maximum connections.
I think this rerolve.
1-"In this momment isn't not possible too manny connections"
2-Please your type of modem: xpto / xpt1 / xpt2 / etc...
3-Calculating 'tracert time'
3-Calculating time max: x minutes min: y minutes
4-Plan a download time:
TODAY DD1/MM1/YYYY1
-HOURS-
10 -
11 -
12
13 -
DD1/MM1/YYYY1
10
11 -
12 -
13
14
15 -
DD1/MM1/YYYY1
10
11
12
13 -
14 -
15
..

Maximum connections reached

Hi ,
I got an issue in Performance testing. we are not using connection pooling in clinet side. I want to check how many connections still opened , which class it opened when i got Maximum connectioned reached exception. Kindly let me know if any body have idea to solve this .
Thanks in Advance,
Javamine

javamine wrote:
... Performance testing. We are not using connection pooling on client side.
I want to check how many connections are open, which class it opened when i got Maximum connections reached exception.
... anybody have idea to solve this. In the client add code to keep track of how many connections are open
and display this and a stacktrace when you get Maximum Connections Reached Exception.
Even if you were using connection pooling
the database can still reject connections above a certain number of concurrent connections.

Application Maximum Connection Reached

Hi there,
I have installed a new Application Server and I have my forms and reports running on it. My users have receive an error as above. It seems the AS can only allow 20 max concurrent user?
How can i enlarge it? My server should be able to cater to more than that.
Thanks

It was simple to plan a download calendar in the case of exceeding maximum connections.
I think this rerolve.
1-"In this momment isn't not possible too manny connections"
2-Please your type of modem: xpto / xpt1 / xpt2 / etc...
3-Calculating 'tracert time'
3-Calculating time max: x minutes min: y minutes
4-Plan a download time:
TODAY DD1/MM1/YYYY1
-HOURS-
10 -
11 -
12
13 -
DD1/MM1/YYYY1
10
11 -
12 -
13
14
15 -
DD1/MM1/YYYY1
10
11
12
13 -
14 -
15
..

I can't enter a Site. Ihere is only a message: "Maximum number of open connections reached."

If i want to go to a Site, i recive this: "Maximum number of open connections reached.
" other Browser work. I have the Problem only with Firefox.

Check the connection settings.
*Firefox/Tools > Options > Advanced : Network : Connection > Settings
*https://support.mozilla.org/kb/Options+window+-+Advanced+panel
If you do not need to use a proxy to connect to internet then select "Use the system proxy settings" setting or select "No Proxy".
See "Firefox connection settings":
*https://support.mozilla.org/kb/Firefox+cannot+load+websites+but+other+programs+can

ISA 2006 slow response, connections timeout, maximum limit reached?

Hey guys,
I've been having an issue with a client's ISA Server for the past couple of weeks and haven't been able to understand why this is happening.
They have a couple of ISA Servers Enterprise Edition in an array. This ISA Servers give Internet access to the entire company. They have significant amount of traffic through a Cisco Iron Port that all the users proxy settings are configured to this device
and the Iron Port forwards the requests to the ISA Servers.
This implementation have been working fine for months, until a few weeks back that started to have slow response problems from the ISA Servers. Analyzing the reports from the ISA Servers, I've noticed an increased amount of traffic a few times this
has happened and mostly from the Iron Port. The Cisco people says this increase amount is due to the fact that the ISA Server stops responding and new requests are made at the moment from the device. We have configured the Iron port IP in the exceptions of
the Flood Mitigation Settings of the ISA Server, and configure it to take more than 20,000 connections.
Still after this configuration, the same problem raised a couple of days back. The ISA Servers stops responding and they need to be forced shut down and restarted to get them back to work.
There are also some errors from some other internal IPs that it reaches maximum connection limits, but these are about 10 errors like this only. I was thinking maybe there are some infected computers or something but they said that they scanned the ones
that show the errors and nothing is detected.
From the ISA reports of the time of the incident, I saw that it reached more than 15,000 concurrent connections. More than double of what it usually handles throughout the day.
I don't know if there is like a connection limit that the ISA can handle before it hangs of something?
Is there any ideas on what can be happening with this?
Thanks for any replies!
Eduardo Rojas

Hi,
Have you check the Event logs on the ISA Server? Any error?
You could use ISABPA to do some basic troubleshootings.
http://www.microsoft.com/en-hk/download/details.aspx?id=811
Best Regards,
Joyce
Please remember to mark the replies as answers if they help and unmark them if they provide no help. If you have feedback for TechNet Subscriber Support, contact [email protected]

Socket POST connection close

Hello all,
I was wondering if there was a way to close a connection once the server writes back to the connection? I have this post:
var conn = new Socket;
//conn.timeout = 300;
//conn.timeout = 10;
conn.timeout = 2;
var tempzzz = $.hiresTimer;
conn.open(vHost);
conn.write("POST " +vSubDir+"/update.asp HTTP/1.1\r\n");
conn.write("Host: " + vHost + "\r\n");
conn.write("Content-Length: " + data_string.length + "\r\n");
conn.write("Content-Type: application/x-www-form-urlencoded\r\n");
conn.write("\r\n");
conn.write(data_string);
var reply = "";
reply = conn.read(999999);
conn.close();
var myTime = $.hiresTimer/1000000;
alert("found reply "+myTime)
When I run this code with the timeout set to 2 my alert states found the reply in 1.75 sec.
When I run this code with the timeout set to 10 my alert states found the reply in 9.87 sec.
When I run this code with the timeout set to 300 my alert states found the reply in 126.23 sec.
Any idea how to close the connection and therefore make indesign active again the moment a server replies? I cannot use a get because I am sending a lot of data to the server which would exceed the URL size limit. Any information would be helpful, thanks!

Hi,
when you are talking about the weblogic level, connection pooling is implemented through configiration level,
Please note we have 3 variables in configiration level :
1. InitialCapacity
2. MaxCapacity
3. CapacityIncrement
initialCapacity means the number of physical connections which will open during the starting of the Server.
which can be initially 0, MaxCapacity means the number of maximum connection which can be opened. i mean maximum physical connections.CapacityIncrement means if it finds like the number of opened coonection is used then it will again open that much Capacity increment of connection. Please not this will not increase the MaxCapacity.
when you are closing the cnnection using connection close methord, you are returning the connection to connection pool , which will increase the number of connection available in the connection pool.
Regards,
Anu Unnithan

ASA5510 - Maximum connect time

Quick question. I have configured the "Maximum Connect Time" as unlimited in my group policy but when a connection is established it shows a "Conn Time Out: 120 minutes".
The connection does get dropped with this timer. Any idea how to actually make it unlimited and why it get sets to 120?
I having a problem with SSL phone clients dropping throughout the day and think this may be the cause.
Thanks

I ended up rebooting the ASA this morning and it fixed the issue. Right away the timeout changed to what I had configured it to be and I was also able to make changes.
Here's the response from TAC. Thanks for helping with this. Much appreciated.
"I am glad that the issue was resolved on a reboot. Might be that svc sessions were stuck in the memory for some reason and the same sessions would be invoked every time you connected rather than tearing it down and creating a new svc session.
Once rebooted I believe the sessions stuck in memory were cleared and new sessions came up as a result the issue vanished. I shall surely update you as I have an update from the devs on this."

LDAP "ServerListener" stops responding (Max number of connections reached)

Hi --
The last four work days, in the evening, our OAS 10G server stopped processing portal logon requests. The response to login requests was this message:
Internal error WWC-00006 Unexpected error
encountered in wwsec_app_priv.process)signon
(User-Defined Exception) (WWC-41417)
An exception was raised when accessing the
Oracle Internet Directory 81: Can't contact
LDAP server. Details:
Operation dbms_ldap.simple_bind_s (The message also included other details such as the host, port and DN, and a reference to error message WWC-41743.)
Suspecting an LDAP problem, we looked on the server, and in ORACLE_HOME/LDAP/LOG I found recent log files (oidldapd[instance]s[pid].log) with several megs of messages that look like this:
2005/06/17:17:59:33 * ServerListener :2 * ERROR :
ServerListener : Max numbers of connections reached.
Num Conns = 874, Max Conns = 874, Closing the
connection. These messages repeated, several times per minute, overnight and the next day until I restarted the server. The same thing happened again the next night.
A metalink search pointed to docid "293391.1" which, in part, suggests that the problem may be caused by improper programming, and that the solution may be to, "investigate the applications that connect to OID and where possible modify them to perform an explicit disconnect."
Does anyone have any reference to how an application can perform an explicit disconnect from the OID? We do have a relatively new application which follows the "Java API for Oracle Internet Directory" -- documention found here: http://download-west.oracle.com/docs/cd/B10501_01/network.920/a96577/oid_java.htm -- but in that document we cannot find any reference for how to "perform an explicit disconnect".
The application already calls the "context.close()" method, which according to the documentation closes the connection to the OID, but we cannot find any other "explicit disconnect". And, since the problem happens even though our app is already calling the context.close(), there must be something else.
Opened this up as a Metalink question related to Portal, but they said it's not their problem, and we should ask over here.
Any thoughts?

Looks like that's helped. While the errors persist, OID isn't dieing.
For anyone with similar problems, it looks like docid 437493.1 is useful. Upgrade clients to at least 10.2.0.3 to defeat a sqlnet problem.
Just tried it with the 10.2.0.5 patchset and it seems to be working and not generating the 104 error on the OID server.

Read from socket failed: Connection reset by peer

On Solaris 10 SPARC I have NO problem with establishing SSH connections.
Here is proof:
# svcs -a | grep ssh
online Jun_02 svc:/network/ssh:default...but here is what can be found in /var/adm/messages
Jun 7 04:09:16 my_host sshd[11701]: [ID 800047 auth.crit] fatal: Read from socket failed: Connection reset by peerTHIS IS IMPORTANT!!!
This messages does not appear during I establish my ssh connection. It appears irregular.
Does anyone know whats going on ?

Hi Darren,
that would make sense but I just made a test:
I have opened tail -f /var/adm/messages and from other host:
- telnet to it on port 22 - no message
- closed client during establishing connection - still no message
But I belive you must be right as I see no other possibility...
Can I turn on more detailed logger in message to be able to see IP address of all host who are trying SSH connection ?
Edited by: czezz on Jun 25, 2009 10:50 PM

Maximum connections allowed for AMS 5.0.1

How can I find out the maximum connection allowed for adobe media server 5.0.1 standard license?

...that would depend on your application.
For a one-way video-on-demand system that streams recorded video at the user's request. Adobe Media Server serves only one stream to each user.
Here are the bandwidth calculations you would make:
Calculating server bandwidth needs (BWs):
BWs = N × S
where N = number of simultaneous users (subscribers)
and S = average bitrate of encoded A/V content
For example to calculate the overall server bandwidth needed to stream video encoded at 500 Kbps to 1000 simultaneous users:
500 Mbps = 1000 × 500 Kbps
The above assumes that content is encoded at a constant bitrate. Most often, however, you will vary the bitrate of the content to suit the viewing audience. This affects your bandwidth needs at both the client and server level.
For example, suppose you estimated that half of the 1000 simultaneous users were going to connect via 350 Kbps DSL modem and the other half via 3 Mbps cable modem. Suppose further that while the video encoded at 500 Kbps was appropriate for the cable viewers, you wanted to encode a separate video at 150 Kbps for the DSL modem users.
In this case, the total bandwidth required of the system is lowered to 325 Mbps:
325 Mbps = (500 Kbps × 500) + (150 Kbps × 500)
This help ?

OID Max numbers of connections reached.

OID version 9.0.4.1.0. There're constant error messages '* ServerListener:2 * ERROR : ServerListener : Max numbers of connections reached. Num Conns
= 900, Max Conns = 900, Closing the connection." in the ldap.log file, but netstat -a|grep port|wc -l always return connections lower than 150.
I'd like to know what caused the error message being populated. Thanks

Looks like that's helped. While the errors persist, OID isn't dieing.
For anyone with similar problems, it looks like docid 437493.1 is useful. Upgrade clients to at least 10.2.0.3 to defeat a sqlnet problem.
Just tried it with the 10.2.0.5 patchset and it seems to be working and not generating the 104 error on the OID server.

## NEED HELP ## Weblogic Managed Server Holding Maximum Connections

In one of our weblogic setup, we have weblogic cluster with 4 members. This cluster has been setup with 2 physical servers, each server having 2 cluser members like below...
Host Server 1 : ManagedServer1:7003, ManagedServer2:7004
Host Server2 : ManagedServer3:7003, ManagedServer4:7004
Cluster member of ManagedServer1:7003 holding maximum connection to HostServer2 and same cluser member of ManagedServer3:7003 holding maximum connection with HostServer1.
As my assumption, since members are in cluster, heartbeat between the members (Host Server 1 : ManagedServer1:7003 and Host Server2 : ManagedServer3:7003) are holding the connections.
Currently each managed server 8000 to 10000 connections holding as ESTABLISHED.
Please let me know, what may be the reason, but other members of same cluster are fuctionality fine.

Hi Sujit,
after executing lsof command, we found below results....and we are unware of afs3-vlserver...this is taking maximum number of connections....
SERVER 1
lsof -i :7003
7003 : fcr_server2
COMMAND PID USER FD TYPE DEVICE SIZE NODE NAME
java 4744 oracle 532u IPv6 359952122 TCP server1:33586->server2:afs3-vlserver (ESTABLISHED)
java 4744 oracle 736u IPv6 321513088 TCP server1:46983->server2:afs3-vlserver (ESTABLISHED)
java 4744 oracle 762u IPv6 321513090 TCP server1:46985->server2:afs3-vlserver (ESTABLISHED)
java 4744 oracle 765u IPv6 322352894 TCP server1:62305->server2:afs3-vlserver (ESTABLISHED)
java 4744 oracle 769u IPv6 321512933 TCP server1:46851->server2:afs3-vlserver (ESTABLISHED)
java 4744 oracle 770u IPv6 321513092 TCP server1:46987->server2:afs3-vlserver (ESTABLISHED)
java 4744 oracle 771u IPv6 321560765 TCP server1:65309->server2:afs3-vlserver (ESTABLISHED)
java 4744 oracle 777u IPv6 321560752 TCP server1:65296->server2:afs3-vlserver (ESTABLISHED)
java 4744 oracle 780u IPv6 321560759 TCP server1:65303->server2:afs3-vlserver (ESTABLISHED)
java 4744 oracle 782u IPv6 321560747 TCP server1:65292->server2:afs3-vlserver (ESTABLISHED)
java 4744 oracle 783u IPv6 321560758 TCP server1:65302->server2:afs3-vlserver (ESTABLISHED)
SERVER 2
lsof -i :7003
COMMAND PID USER FD TYPE DEVICE SIZE NODE NAME
java 14332 oracle 720u IPv6 129183836 TCP server2:afs3-vlserver->server1:46985 (ESTABLISHED)
java 14332 oracle 751u IPv6 129207449 TCP server2:afs3-vlserver->server1:65309 (ESTABLISHED)
java 14332 oracle 775u IPv6 129183781 TCP server2:afs3-vlserver->server1:46983 (ESTABLISHED)
java 14332 oracle 778u IPv6 129183849 TCP server2:afs3-vlserver->server1:46987 (ESTABLISHED)
java 14332 oracle 780u IPv6 129374814 TCP server2:afs3-vlserver->server1:20099 (ESTABLISHED)
java 14332 oracle 783u IPv6 129207310 TCP server2:afs3-vlserver->server1:65289 (ESTABLISHED)
java 14332 oracle 786u IPv6 129207343 TCP server2:afs3-vlserver->server1:65303 (ESTABLISHED)
java 14332 oracle 787u IPv6 154651528 TCP server2:afs3-vlserver->server1:35492 (ESTABLISHED)
java 14332 oracle 792u IPv6 129207347 TCP server2:afs3-vlserver->server1:65304 (ESTABLISHED)
Please let us know about this....
Thanks

Socket Channel Connection - Continuous read

Hi all,
I am new to socket programming. This is where I am stuck...I need to read from a channel 'continuously', i.e messages are continuous published and I need to keep on reading it. Below is my code for review....I am just getting the 1st line of the message. please suggest..Thanks in advance
import java.io.IOException;
import java.net.InetAddress;
import java.net.InetSocketAddress;
import java.nio.ByteBuffer;
import java.nio.CharBuffer;
import java.nio.channels.ReadableByteChannel;
import java.nio.channels.SelectionKey;
import java.nio.channels.Selector;
import java.nio.channels.SocketChannel;
import java.nio.charset.Charset;
import java.nio.charset.CharsetDecoder;
import java.util.Iterator;
import java.util.Set;
public class TestConnection {
     private static Charset charset = Charset.forName("ISO-8859-1");
     private static CharsetDecoder decoder = charset.newDecoder();
     public static void main(String[] args) throws IOException {
          SocketChannel sc = null;
          String desthost = "172.19.67.33";
          int port = 5002;
          InetSocketAddress isa = new InetSocketAddress(InetAddress.getByName(desthost), port);
          try {
               sc = SocketChannel.open();
               sc.connect(isa);
               System.out.println(" Message--> " + readFromChannel(sc, 4096));
          } catch (Exception e) {
               e.printStackTrace();
          } finally {
               if (sc != null)
                    sc.close();
     public static String readFromChannel(SocketChannel sChannel, final int size) throws IOException {
          int numBytes = 0;
          boolean hasRead = false;
          ByteBuffer inBuffer = ByteBuffer.allocateDirect(size);
          CharBuffer charBuffer = CharBuffer.allocate(size + 100);
          StringBuffer dataRead = new StringBuffer();
          Selector selector = Selector.open();
          System.out.println(" Is Connected--> " + sChannel.isConnected());
          System.out.println(" sChannel.isBlocking()--> " + sChannel.isBlocking());
          sChannel.configureBlocking(false);
          System.out.println(" sChannel.isBlocking()--> " + sChannel.isBlocking());
          sChannel.register(selector, SelectionKey.OP_READ);
          try {
               while (selector.select(20000) > 0) {
                    Set readyKeys = selector.selectedKeys();
                    Iterator readyItor = readyKeys.iterator();
                    while (readyItor.hasNext()) {
                         SelectionKey key = (SelectionKey) readyItor.next();
                         readyItor.remove();
                         ReadableByteChannel keyChannel = (SocketChannel) key.channel();
                         if (key.isReadable()) {
                              for (int i = 0;; i++) {
                                   int count = 0;
                                   if ((count = keyChannel.read(inBuffer)) < 0) // EOF
                                        keyChannel.close();
                                        throw new IOException("Socket lost connection during read operation");
                                   numBytes += count;
                                   if (!inBuffer.hasRemaining()) {
                                        hasRead = true;
                                        System.out.println("has read");
                                        System.out.println("SUCCESSFUL, length of data read:" + numBytes);
                                        inBuffer.flip();
                                        decoder.decode(inBuffer, charBuffer, false);
                                        charBuffer.flip();
                                        selector.close();
                                        return dataRead.append(charBuffer).toString();
                                   if (i >= 2) {
                                        break;
               if (false == hasRead) {
                    System.err.println("has _NOT_ read");
                    System.err.println("length of data read: " + numBytes);
                    System.err.println("length of data read: " + numBytes);
                    if (numBytes > 0) {
                         inBuffer.flip();
                         decoder.decode(inBuffer, charBuffer, false);
                         charBuffer.flip();
                         System.err.println("ERROR, data read: " + dataRead.append(charBuffer).toString());
                    throw new IOException("Socket read operation timed out");
               } else {
                    throw new IOException("Invalid Read Socket state");
          } finally {
               selector.close();
}

The output is -->
Is Connected--> true
sChannel.isBlocking()--> true
sChannel.isBlocking()--> false
has read
SUCCESSFUL, length of data read:4096
Message--> 000c100000300000007f100700302E12008071104060400 Lane Communication Is OK 004d100500300302E0100000027000000000000000000000000000010845800000000000000000000000c100000302E01007f100700303E12008071104140200 Lane Communication Is OK 004d100500300303E0402350427000000000000000000000000000119107300000008500000000000000c100000303E00007f100700304E12008070704085600 Lane Communication Is OK 004d100500300304E0201521427000000000000000000000000000081090700000003640000000000000c100000304E00007f100700305X12008071104111600 Lane Communication Is OK 004d100500300305X0801411215000000000000000000000000000048892600000000810000000001000c100000305X00007f100700306X12008071104102600 Lane Communication Is OK 004d100500300306X0800660815000000000000000000000000000046838800000000760000000000000c100000306X00007f100700307X12008063003542200 Lane Communication Is OK 004d100500300307X1000445315000000000000000000000000000125509000000017220000000127000c100000307X000104100300300307X200807111727309311015004453030200000000000000000000000000000527000001020102000000001154210344501304E2008071116072500EZPASS TAG# 022 - 04522780 STATUS = VALID TYPE = INTERIOR FPT Program Status = Success 00012550910000001723000000012820104100300300305X200807111727325610815014112010200000000000000000000000000000000010201020102000000005146360015500121E2008071117010800MANUAL CASH IN EXIT MANUAL 00004889270000000082000000000100104100300300307X200807111727353911015004453030200000000000000000000000000000072000001020102000000001154220344700103E2008071117070600EZPASS TAG# 008 - 03623801 STATUS = VALID TYPE = INTERIOR FPT Program Status = Success 00012550920000001724000000012800104100300300307X200807111727379411015004453030200000000000000000000000000000072000001020102000000001154230344900401E2008071117181300EZPASS TAG# 006 - 00468916 STATUS = VALID TYPE = INTERIOR FPT Program Status = Success 00012550930000001725000000012800104100300300306X200807111727399610815006608010200000000000000000000000000000000010201020102000000000075910013300613E2008071117032500MANUAL
The out actually gives multiple line...but what should be the approach to read line by line continuously and keep parsing them......
kind regards

RFC Adapter CC Maximum connection.

Hi Experts,
In our scenario in RFC Communication channel the maximum connection parameters is blank. In that field there not specified any figure. so please can you tell me in that case how many connections it will take by default.
Regards
Prabhakar.A

HI,
Per day in my scenario nearly 600 files will process. RFC used for RFC lookup by passing the country code to ecc system that ecc system is generate the sequential number and send it to the XI system mapping. some times the sequential number is not getting to the target field. can you please sugest me the solution.
Regards,
Prabhakar.A

Socket maximum connections reached

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