Most likely, you are not properly closing resources like files and such, and
a change in the Garbage collection is hurting you.
My advice would be to run findbugs and fix any issues it points out.
http://findbugs.sourceforge.net/
George Sexton
MH Software, Inc.
http://www.mhsoftware.com/
Voice: 303 438 9585
-Original Message-
From: Moderate Extremist [mailto:[EMAIL PROTECTED]
Sent: Friday, March 11, 2005 5:38 AM
To: tomcat-user@jakarta.apache.org
Subject: Too many open files exception
A coworker of mine had a Tomcat-driven site switched over to JVM 1.4.2
from JVM 1.3.1. He got an email from the client about two hours later
saying they were getting a bunch of errors:
Internal Servlet Error:
javax.servlet.ServletException: common.cException: common.cException:
java.io.FileNotFoundException:
/space/icrp/WEB-INF/icrp.properties (Too
many open files)
at
org.apache.jasper.runtime.PageContextImpl.handlePageException(
PageContextImpl.java:461)
at
_0002ferror_0002ejsperror_jsp_5._jspService(_0002ferror_0002ej
sperror_jsp_5.java:187)
at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:119)
...
Root cause:
common.cException: common.cException: common.cException:
java.io.FileNotFoundException:
/space/icrp/WEB-INF/icrp.properties (Too
many open files)
at common.cUtils.closeConnections(cUtils.java:871)
at
_0002ferror_0002ejsperror_jsp_5._jspService(_0002ferror_0002ej
sperror_jsp_5.java:177)
at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:119)
...
After he got the email he restarted the site only to have it
behave in a
similar fashion over half an hour later. We scoured online
with the above
Java error msg to no avail.
My initial thought was to peruse the Apache logs to see if there were
entries that correlated to when the crashes occured and what were the
resulting message; this is what I found:
143.65.99.20 - - [07/Mar/2005:20:38:51 -0500] GET
/wizsearch.jsp?add=...
HTTP/1.1 500 612 http://www...; Mozilla/4.0 (compatible; MSIE 6.0;
Windows NT 5.1)
217.44.173.38 - - [07/Mar/2005:20:38:51 -0500] GET
/abstract.jsp?SID=67466ProjectID=164428 HTTP/1.1 500 612
http://www.../projectlist.jsp?SID=67466ShowCart=false; Mozilla/5.0
(Macintosh; U; PPC Mac OS X; en-gb) AppleWebKit/125.5.5 (KHTML, like
Gecko) Safari/125.12
212.174.145.126 - - [07/Mar/2005:20:38:51 -0500] GET /
HTTP/1.1 500 607
- Mozilla/5.0 (Windows; U; Windows NT 5.0; en-US; rv:1.7.5)
Gecko/20041107 Firefox/1.0
169.142.1.1 - - [07/Mar/2005:20:38:51 -0500] GET
/servlet/search/?CSO=5.5
HTTP/1.1 302 448 http://www.google.com/search?q=...; Mozilla/4.0
(compatible; MSIE 6.0; Windows 98)
62.128.179.3 - - [08/Mar/2005:08:23:57 -0500] GET
/error.jsp?SID=68030
HTTP/1.1 500 612 http://www.../projectlist.jsp?SID=68030;
Mozilla/4.0
(compatible; MSIE 6.0; Windows NT 5.0)
62.128.179.2 - - [08/Mar/2005:08:23:57 -0500] GET
/error.jsp?SID=68031
HTTP/1.0 500 600 http://www.../wizsearch.jsp?add=...; Mozilla/4.0
(compatible; MSIE 6.0; Windows NT 5.0)
[Mon Mar 7 20:38:51 2005] [info] [client 169.142.1.1]
(32)Broken pipe:
client stopped connection before rflush completed
[Mon Mar 7 20:38:51 2005] [info] [client 217.44.173.38]
(32)Broken pipe:
client stopped connection before rflush completed
[Mon Mar 7 20:38:51 2005] [info] [client 143.65.99.20]
(32)Broken pipe:
client stopped connection before rflush completed
[Mon Mar 7 20:38:51 2005] [info] [client 212.174.145.126] (32)Broken
pipe: client stopped connection before rflush completed
[Tue Mar 8 08:23:57 2005] [info] [client 62.128.179.3]
(32)Broken pipe:
client stopped connection before rflush completed
[Tue Mar 8 08:23:57 2005] [info] [client 62.128.179.2]
(32)Broken pipe:
client stopped connection before rflush completed
I found out the rflush message normally meant that a user
has pressed
the browser's stop button, but to have the same messages appear
simultaneously 25-30 times from the same 2-4 IPs seems kind
of fishy. I
did a nslookup and I don't think those IPs belong to indexing
services.
Has anyone seen anything like this, and if so, what does this
mean? What
kind of problems normally manifest itself through Too many
open files
messages? And is this really a Tomcat problem, Apache problem, or a
problem caused by
something else?
BTW this site is currently using Apache 1.3.26 and Tomcat
3.2.4; would we
be able to get rid of this issue if we started using Apache
2.0.xx and/or
a new version of Tomcat?
Thanks
--
Joe Tseng
I can be Googled. Therefore I am.
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