Network Error Ioexception No Buffer Space Available Maximum Connections Reached
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Java Net Socketexception No Buffer Space Available Linux
other. Join them; it only takes a minute: Sign up java.net.SocketException: No buffer space available (maximum connections reached?): JVM_Bind up vote 32 down vote favorite 5 Tomcat is running a webapp under Windows. After a few days (under very
No Buffer Space Available Windows 2012
low load), the exception mentioned in the title starts to appear in the logs, no new connections can be established from that point on, the only fix is then to reboot the server. Environment: Latest Tomcat 6 Windows Server 2008 R2 JDK 6 update 30 SQL Server 2008 Kerberos authentication Evidence collected so far: netstat shows no excessive amount of connections ProcessExplorer shows no excessive amount of open file handles system main memory usage is average JVM heap no buffer space available maximum connections reached linux usage is average restarting Tomcat does not solve the problem Open questions: if we were leaking connections, shouldn't they show up in netstat? shouldn't a restart of the appserver resolve the problem, because the OS should free all process resources? is there a way to trace the problem to its origin? E.g. installing monitoring software, maybe something similar to lsof etc.? I'm out of ideas, any hints appreciated! windows tomcat jvm socketexception connection-leaks share|improve this question edited Apr 10 '12 at 12:05 asked Apr 10 '12 at 11:58 Michael Böckling 2,24432134 There are lots of questions similar to yours, please do a search and check them out first. –Some programmer dude Apr 10 '12 at 12:14 5 I did, believe me. None of them helped to resolve my problem, because I'm not seeing any of the symptoms I should be seeing, and none of them contain hints how the source of the problem can be identified. –Michael Böckling Apr 10 '12 at 13:09 add a comment| 3 Answers 3 active oldest votes up vote 51 down vote accepted The reason we got this error is a bug in Windows Server 2008 R2 / Windows 7. The kernel leaks loopback sockets due to a race condition on machines with more than one core, this patch fixes the issue: http://support.microsoft.com/kb/2577795 share|improve this answer answered Apr 18 '12 at 10:49 Mich
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No Buffer Space Available Maximum Connections Reached Cannot Bind
vote hi all, I am not sure if this is the right forum.. no buffer space available jvm_bind we have bunch of app servers deployed on windows 2008 R2 machine connecting to SQL server running on another machine. once no buffer space available maximum connections reached windows a week, we start getting this error. java.sql.SQLException: Network error IOException: No buffer space available (maximum connections reached?): connect I was able to reproduce the error on my local windows 7 machine. this http://stackoverflow.com/questions/10088363/java-net-socketexception-no-buffer-space-available-maximum-connections-reached error is throw when the OS runs out of dynamic ephemeral ports. So we went ahead and increased the port range on our server until we figured out a way to troubleshoot the issue. but its not helping and every week to 10 days, we start getting the error. From the various testing, it looks like there could be process that is basically running wild and using https://social.technet.microsoft.com/Forums/windows/en-US/157d8f12-66dc-4fb7-9014-c47e65019d2d/no-buffer-space?forum=winserverPN up the ephemeral ports. by the time we log on and capture the netstat the number of ports are in hardly 1000's. is there any tool similar to port reporter (compatible with windows 2003) on windows 2008? i tried the winsock event log but couldn't make much head way. i am open to any ideas on solving this issue.. thanks bharat Wednesday, June 02, 2010 3:41 PM Reply | Quote Answers 0 Sign in to vote hi amit, I think we have figured out the issue. we turned off the http and outlook scanning module on the anti virus that was installed on the server and after that we haven't seen out of buffer space issue on that server. The issue used to crop up once a month and we used to reboot the system. And it has been more then 2 months since the last out of buffer space issue on that server. links that helped us in pointing to anit-virus: https://trac.torproject.org/projects/tor/wiki/TheOnionRouter/WindowsBufferProblems https://trac.torproject.org/projects/tor/ticket/98 Thank you bharat Marked as answer by bharat.satya Monday, September 20, 2010 3:36 PM Monday, September 20, 2010 1:27 PM Reply | Quote All replies 0 Sign in to vote Hi, Thank y
reached?) DB2; JCC; JDBC; No buffer space available; maximum connections reached Technote (troubleshooting) Problem(Abstract) Users may receive the following JCC error on Windows platform: FATAL notify http://www-01.ibm.com/support/docview.wss?uid=swg21690707 - Exception in
connections reached?): JVM_Bind" issue I hit this issue recently which occurred on only one windows 7 host. The error was caused by this hard to guess reason (http://support.microsoft.com/kb/196271). The default number of ephemeral TCP ports is 5000. Sometimes this number may become less if the server has too many active client connections due to which the ephemeral TCP ports are all used up and in this case no more can be allocated to a new client connection request resulting in the below issue (for a Java application): Caused by: java.net.SocketException: No buffer space available (maximum connections reached?): JVM_Bind at java.net.PlainSocketImpl.socketBind(Native Method) at java.net.PlainSocketImpl.bind(PlainSocketImpl.java:365) at java.net.Socket.bind(Socket.java:577) at com.sun.net.ssl.internal.ssl.BaseSSLSocketImpl.bind(BaseSSLSocketImpl.java:95) at com.sun.net.ssl.internal.ssl.SSLSocketImpl.bind(SSLSocketImpl.java:45) at com.sun.net.ssl.internal.ssl.SSLSocketImpl.