date:20091006


David Kerber wrote:

Pid Ster wrote:




YDHTVO
  

???  Haven't seen that one before.
D

Neither have I. You Don't Have To ... ?

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Re: Alias URL

Caldarale, Charles R wrote:

From: André Warnier [mailto:a...@ice-sa.com]
Subject: Re: Alias URL

(stop Tomcat first)

Step 1 : you will need 2 Host .. sections in Tomcat's configuration
file server.xml.  Currently, there is only one.

Actually, the one will suffice, if the OP is willing to eliminate Tomcat's 
existing ROOT webapp (no big loss).

Eh no. Prodded, he said he wanted this :
..
 What you would like is that :
 - when a user enters the URL http://imsden.mms; (or 
http://imsden.mms:8080;), he continues to get the standard Tomcat homepage
 - when a user enters the URL http://webtop; (or 
http://webtop:8080;), he gets immediately the first page of the 
webtop application

 Is that correct ?

This is correct

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Re: Alias URL


Johnson, Rob E wrote:

Andre thanks for all your help that worked.  I can use the alias, and I can 
still hit the other webapps.

Also thanks to Martin Gainty and his help.


No thanks required, we live to help.
Martin and I, the winning team...
:-)

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RE: InvocationTargetException results OutOfMemory issue as codecache is full in tomcat 5.5

2009-10-06 Thread subrahmanyam


Thanks to all for your reply.

Today also we have received same issue. After Continuously monitoring probe
found that codecache reached 48MB and after that 3 users faced  issue. Is
there any setting in JAVA_OPTS to refresh the codecache once it reaches to
maximum?


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Re: java.lang.OutOfMemoryError: Java heap space

On 05.10.2009 22:04, André Warnier wrote:
 André Warnier wrote:
 ...
 and still wants to add something :
 
 - a new KeepAlive connection is made from the browser to Apache (httpd).
 - then a request comes in on that connection, and it happens to be one
 that gets forwarded to Tomcat.  So a mod_jk connection is made to
 Tomcat, Tomcat allocates a thread for it.
 - I would imagine that mod_jk must pass on to Tomcat the fact that this
 is a KeepAlive connection, so that Tomcat would know that its thread for
 that connection, should also wait for subsequent requests.
 - so now the webapp/thread generates the response to the first request,
 and waits on the connection for more requests.
 - however, the browser does send more requests to Apache, but these are
 not ones that get forwarded to Tomcat (for example, they are for items
 that Apache serves locally) ...
 
 So now I wonder about how Apache + mod_jk + Tomcat react in such a
 situation.  Do the mod_jk connection +Tomcat thread keep waiting anyway,
 and how long ?

No in general. mod_jk only kicks in after a new request arrived over
such a connection. mod_jk is agnotic about whether the rquests came over
the same connection or not, even whether they belong to the same user or
not.

But: in case you are using a prefork MPM, each connection gets assigned
to one process having one thread. This process has a connection pool of
size 1 to each backend and the backend ties a dedicated thread to that
connection (unless using tcnative). So in this case, it is a yes.
Between two Keep Alive requests, there's no way of letting the Apache
process handle other requests and thus the backend connection and
backend thread are blocked waiting for the next request. That's why e.g.
NTLM has a chance to work via mod_jk in combination with prefork.

So here's a use case for the worker MPM, because then one client
connection still blocks one Apache thread. But multiple connections are
concurrently handled by the same Apache process, so mod_jk can
efficiently reuse its backend connections for requests from other
connections handled by the same process. The total used connection pool
size might then be much smaller than with the prefork MPM.

Regards,

Rainer

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Re: java.lang.OutOfMemoryError: Java heap space

On 05.10.2009 18:58, Joe Hansen wrote:
 Thank you so much for your tips, Rainer!
 
 The websites went down yet again. Increasing the java heap size took
 care of the OutOfMemoryError, but the number of httpd processes keep
 increasing until the websites crash. I haven't added any new code in
 the past few months, hence I am surprised why the requests are getting
 stuck. Here's a link to the tomcat thread dumps:
 http://pastebin.com/m17eea139

Just tried to look at it, but pastebin replies with:


Down for maintenance - 6th Oct 2009

Pastebin.com is getting an unprecedented amount of traffic due to a news
story in which some leaked Hotmail passwords have been pasted on this site

...


Let's see, when they will be up again. They're running Apache 1.3.33 ...

 Please let me know if you cannot view it and I will email the relevant
 portion of the catalina.out file to you. Is there an easy way to find
 out what code is causing the requests to get stuck?
 
 Thank you!
 
 Joe
 
 
 On Sun, Oct 4, 2009 at 2:36 PM, Rainer Jung rainer.j...@kippdata.de wrote:
 Hi Joe,

 On 04.10.2009 21:45, Joe Hansen wrote:
 Rainer, Thank you so much for your kind reply!

 I have increased the java heap size to 512MB (-Xms512m -Xmx512m). I am
 hoping that would fix the issue. I had configured our webserver to use
 Jasig's Central Authentication System (CAS). Recently I increased the
 session timeout from 30 minutes to 4 hours. I am guessing that must
 have had an impact on the number of tickets that the CAS could store
 in the Java's memory space.

 I did run the kill -QUIT command against the tomcat process. It did
 generate a huge output in the catalina.out file. I am unable to
 decipher it. I do not want to post it to the mailing list because its
 very long. Would you be able to please tell me what should I be
 looking for within this long thread dump?

 Can you put it somewhere on the web, so we can look at it, or are you
 afraid there is something private in there? You could use pastebin or
 something similar in case you do not have a public web server yourself.

 If you don't want to post in public, you can also mail it to me, I will
 post the result, in case I find something relevant.

 Regards,

 Rainer

 On Sat, Oct 3, 2009 at 12:24 PM, Rainer Jung rainer.j...@kippdata.de 
 wrote:
 On 03.10.2009 20:07, Joe Hansen wrote:
 Hey All,

 I get this error (java.lang.OutOfMemoryError: Java heap space) after
 my Apache 2.0/Tomcat 5.5/mod_jk installation has been up and running
 for a few hours. This problem started just since two days. Never had
 this issue before!

 I have also noticed that as soon as I startup the server, 9 httpd
 processes start. Number of httpd processes keep on increasing until I
 get the OutOfMemoryError.
 $ps -aef | grep httpd
 root 31984 1  0 11:23 ?00:00:00 /usr/sbin/httpd
 apache   31987 31984  0 11:23 ?00:00:00 /usr/sbin/httpd
 apache   31988 31984  0 11:23 ?00:00:00 /usr/sbin/httpd
 apache   31989 31984  0 11:23 ?00:00:00 /usr/sbin/httpd
 apache   31990 31984  0 11:23 ?00:00:00 /usr/sbin/httpd
 apache   31991 31984  0 11:23 ?00:00:00 /usr/sbin/httpd
 apache   31992 31984  0 11:23 ?00:00:00 /usr/sbin/httpd
 apache   31993 31984  0 11:23 ?00:00:00 /usr/sbin/httpd
 apache   31994 31984  0 11:23 ?00:00:00 /usr/sbin/httpd

 Sounds like requests get stuck or responses are only returned very slowly.

 I would take thread dumps during the time requests pile up (e.g. httpd
 process count increases). Thread dumps are generated by kil -QUIT
 against the Tomcat process. Result is written to catalina.out. Always
 take afew thread dumps shortly after each other, e.g. 3 dumps each 3
 seconds apart from the previous one, so that you can find out, if a
 status in a dump is pure coincidence or lasts for somewhat longer.

 $ps -aef | grep tomcat
 root 31949 1 43 11:23 pts/000:00:58 /usr/java/jdk/bin/java 
 -Djava.u
 il.logging.manager=org.apache.juli.ClassLoaderLogManager 
 -Djava.util.logging.co
 fig.file=/usr/lib/apache-tomcat/conf/logging.properties 
 -Djava.endorsed.dirs=/u
 r/lib/apache-tomcat/common/endorsed -classpath 
 :/usr/lib/apache-tomcat/bin/boot
 trap.jar:/usr/lib/apache-tomcat/bin/commons-logging-api.jar 
 -Dcatalina.base=/us
 /lib/apache-tomcat -Dcatalina.home=/usr/lib/apache-tomcat 
 -Djava.io.tmpdir=/usr
 lib/apache-tomcat/temp org.apache.catalina.startup.Bootstrap start

 There is no Java memory configuration included above (i.e. al defaults).
 It might well be, that you have to explicitely set heap size, perm size
 and if you like also eden and semi spaces.

 Can someone on this list please help me resolve this issue.

 Thanks you,
 Joe

 Regards,

 Rainer

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RE: InvocationTargetException results OutOfMemory issue ascodecache is full in tomcat 5.5

 From: subrahmanyam [mailto:venkata.ad...@genpact.com]
 Subject: RE: InvocationTargetException results OutOfMemory issue
 ascodecache is full in tomcat 5.5

 Is there any setting in JAVA_OPTS to refresh the codecache 
 once it reaches to maximum?

No, but you can raise the maximum via the -XX:ReservedCodeCacheSize=??? 
parameter.  The default is indeed 48m for -server mode.  I've never seen the 
CodeCache generate an OOME before, so I'm not fully convinced this is the 
problem, but it's worth a try.

 - Chuck

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Re: Cannot set remote address in valve (Tomcat 5.5)

I know I'm late in this discussion. Besides the very good mentioning of
mod_remoteip, RemoteIpValve and XForwardedFilter I guess there's a way
of doing it in case you are using mod_jk.

mod_jk (and mod_proxy_ajp) use the AJP protocol between the web server
and the backend, e.g. Tomcat. This protocol transports the original
communication information from the web server to the backend, and when
remote IP etc., it doesn't get the backend data (e.g. the client of the
backend is the web server, not very intersting), but instead the data
forwarded by the web server.

Since few versions of mod_jk we allow this data to be influenced by the
admin of the web server. Most of the data can be taken from mod_jk out
of so-called environment variables of Apache httpd, and those variables
can be manipulated by mod_rewrite.

With a little config magic you could e.g.

- Let mod_rewrite check, whether the X-Forwarded-For header was set

- Let mod_rewrite check, whether there's more than on IP in it, if yes
extract the first one, if no take the whole header

- Put the result into the magic env var

and now mod_jk will forward this result as the remote IP address instead
of the one retrieved from the TCP connection.

For details see:

http://tomcat.apache.org/connectors-doc/generic_howto/proxy.html

and

http://tomcat.apache.org/connectors-doc/reference/apache.html

Warning: you very likely would need to use Apache httpd 2.2, because
before mod_rewrite might not have been powerful enough.

Regards,

Rainer

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Re: how to integrate tomcat with IDE tools like eclipse,Netbeans?

2009-10-06 Thread Deepa Annamalai

Follow this tutorial,

http://www.coreservlets.com/Apache-Tomcat-Tutorial/

-Deepa

2009/10/6 srinivas2828 srinivas2...@gmail.com


 hi friends does anybody know how to integrate tomcat with tomcat with
 eclipse
 thanks in advance
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Re: How to Map domain to a context using Mod_jk

On 06.10.2009 06:56, gpike wrote:
 
 I have Virtual Hosts defined in Apache for each domain. I want to map the
 domain to a context in Tomcat. For instance I would like mysite.com to map
 to /mysite_com in Tomcat. Would it be something like: 
 
 VirtualHost *:80
 ServerName mysite.com
 RewriteRule ^/(.*)$ /mysite_com/$1 [PT]
 JkMount /mysite_com/* worker1
 /VirtualHost
 
 Is there a better way?
 
 Thanks Gordon

If you already have contexts like mysite_com and you have reasons for
adding httpd and mod_jk, then yes, that would be the way to go.

The RewriteRule is a bit underspecified though, it would also apply to
URLs, which already start with /mysite_com/. You can use RewriteCond
with a ! to check against not starting with /mysite_com/.

You miht run into trouble with cookies and redirects. Have a look at

http://tomcat.apache.org/connectors-doc/generic_howto/proxy.html#URL
Rewriting

concerning more info about those.

Regards,

Rainer

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Re: how to integrate tomcat with IDE tools like eclipse,Netbeans?

2009-10-06 Thread srinivas2828


Thanks for your Help and I will go through the material and I will let you
know what happen...
again thanks a lot


Deepa Annamalai wrote:
 
 Follow this tutorial,
 
 http://www.coreservlets.com/Apache-Tomcat-Tutorial/
 
 -Deepa
 
 2009/10/6 srinivas2828 srinivas2...@gmail.com
 

 hi friends does anybody know how to integrate tomcat with tomcat with
 eclipse
 thanks in advance
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Re: java.lang.OutOfMemoryError: Java heap space

On 05.10.2009 18:58, Joe Hansen wrote:
 Thank you so much for your tips, Rainer!
 
 The websites went down yet again. Increasing the java heap size took
 care of the OutOfMemoryError, but the number of httpd processes keep
 increasing until the websites crash. I haven't added any new code in
 the past few months, hence I am surprised why the requests are getting
 stuck. Here's a link to the tomcat thread dumps:
 http://pastebin.com/m17eea139
 
 Please let me know if you cannot view it and I will email the relevant
 portion of the catalina.out file to you. Is there an easy way to find
 out what code is causing the requests to get stuck?

The dump file contains three thread dumps.

The things all dumps have in common:

- 60 threads for the quartz scheduler, all idle
- 13 threads in the AJP connection pool, connected to Apache, but idle
waiting for the next request to be send (the same threads in all three
dumps)
- 6 store plus 6 expiry threads of the EHCache, seems idle
- 1 AJP + 1 HTTP(S) thread (port 8443) waiting to accept the next new
connection to come in
- 2 AJP + 3 HTTP(S) threads (port 8443) sitting idle the pool, waiting
for work
- a couple of other normal threads not directly related to request handling

So the time you took the three dumps, this Tomcat was completely idle
and did not have a single request to handle.

If you are completely sure, you took the dumps while there was a storm
of requests and your system couldn't cope the load, something has
prevented the requests to ever reach Tomcat.

I don't have your Tomcat version at hand at the moment, but for some
time very special OutOfMemory errors (could not create native thread)
lead to a situation, where Tomcat simply wouldn't accept any new
connections. Although you report OutOfMemory errors, I'm not directly
suggesting that that is your problem here. There might still be a
relation though.

Are you sure, that you took the dumps for the right Tomcat at the right
time?

Regards,

Rainer

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Tomcat training at ApacheCon

2009-10-06 Thread Filip Hanik - Dev Lists


In addition to the Tomcat Track, 
http://us.apachecon.com/c/acus2009/schedule#tomcat , we are also putting on a 2 
day Tomcat training, http://us.apachecon.com/c/acus2009/sessions/452 ,

It's a great track for both administrators and developers and goes above and 
beyond just the configuration files. If you have any questions, feel free to 
contact me directly.

A recent feathercast about the Tomcat training.
http://feathercast.org/?p=86


best
Filip



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Re: How to Map domain to a context using Mod_jk

2009-10-06 Thread gpike

I want to be able to add new domains without restarting Tomcat. In tomcat
adding a VirtualHost would require a restart. I believe I can add a
VirtualHost in Apache without a restart. If I could redirect that to a
webapp context in Tomcat I think I can add those without a restart. Is that
the way to accomplish that?

Pid Ster wrote:

On 6 Oct 2009, at 05:56, gpike gop...@gmail.com wrote:

I have Virtual Hosts defined in Apache for each domain. I want to
map the
domain to a context in Tomcat. For instance I would like mysite.com
to map
to /mysite_com in Tomcat. Would it be something like:

VirtualHost *:80
ServerName mysite.com
RewriteRule ^/(.*)$ /mysite_com/$1 [PT]
JkMount /mysite_com/* worker1
/VirtualHost

Is there a better way?

You mean is there a way to achieve the above with Tomcat?

Yes: define a default or ROOT context for each host. Tomcat docs site
has plenty of info on virtual hosts and setting up web application
contexts.

Thanks Gordon
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alias problem in tomcat5.0 + apache1.3

2009-10-06 Thread partha_ctc


Hi,
we have tomcat5.0 and apache1.3. my aim is instead of
http://localhost:8085/DOMAIN, how can i call http://partha16/DOMAIN. for
that i have mdified server.xml and httpd.conf file. but it says page not
found.
i have attached the httpd.conf file.
first i tried with virtual host , but it has not worked. so i commented the
virtualhost tag.
Can some one help me in this configuration peoble?
==
In apache: httpd.conf, i have following line:
httpd.conf
Directory D:/software/Tomcat 5.0/DOMAIN/DOMAIN
 Order allow,deny
 Allow from all   
/Directory
DocumentRoot D:/software/Tomcat 5.0/DOMAIN/DOMAIN
Alias /partha16 D:/software/Tomcat 5.0/DOMAIN/DOMAIN/
Location /partha16
Order allow,deny
Allow from all
#   DirectoryIndex portal.htm
/Location
==
following lines has been added in server.xml
server.xml

Host name=partha16 debug=1 appBase=DOMAIN
   unpackWARs=true autoDeploy=true

 Logger className=org.apache.catalina.logger.FileLogger
 directory=logs  prefix=DOMAIN_com. suffix=.log
 timestamp=true/

 Context path= docBase=DOMAIN debug=0 reloadable=true

 Logger className=org.apache.catalina.logger.FileLogger
 prefix=DOMAIN. suffix=.log timestamp=true /

 Resource name=mail/Session auth=Container
   type=javax.mail.Session/
 ResourceParams name=mail/Session
 parameter
 namemail.smtp.host/name
 valuelocalhost/value
 /parameter
 /ResourceParams

 /Context
/Host
http://www.nabble.com/file/p25769060/httpd.conf httpd.conf 
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RE: How to Map domain to a context using Mod_jk

 From: gpike [mailto:gop...@gmail.com]
 Subject: Re: How to Map domain to a context using Mod_jk

 In tomcat adding a VirtualHost would require a restart.

Not true; use the supplied host-manager (not manager) webapp to manipulate 
Host entries on the fly.  The only caveat is that it does not update 
server.xml, so you would need to do that separately, or always use host-manager 
to create the virtual hosts after a restart.

 - Chuck

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Re: Sharing webapps folder in tomcat cluster

-BEGIN PGP SIGNED MESSAGE-
Hash: SHA1

Paolo,

On 10/5/2009 10:04 AM, Paolo Santarsiero wrote:
 Load balancing works fine, but when I shutdown a tomcat with a open 
 session, replication sessions doesn't works. What do you think?

You should post another question so folks on the list with replication
experience can respond. Remember to provide as much information as you
can about your environment and what you can observe.

- -chris
-BEGIN PGP SIGNATURE-
Version: GnuPG v1.4.9 (MingW32)
Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org/

iEYEARECAAYFAkrLV+UACgkQ9CaO5/Lv0PDgkgCgwkaY65GouVew2OuLVjLeDDpA
BboAoJhOgenXuKSsjDwSIGIuth60JUse
=3JAp
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RE: How to Map domain to a context using Mod_jk

2009-10-06 Thread gpike

Really great. So just so I understand, I want to host users sites where they
have their own domain. I want to be able to deploy their webapp, for their
domain in my server without the restarting the Tomcat server. I also want to
automate the process.

I thought a restart was needed because VirtualHost config is in the
server.xml. So are you saying using host-manager I could add the new
VirtualHost, but I would also need to add it to server.xml because the
host-manager changes would be lost at restart?

If so that would make everything simpler. Thanks.

Caldarale, Charles R wrote:

From: gpike [mailto:gop...@gmail.com]
Subject: Re: How to Map domain to a context using Mod_jk

In tomcat adding a VirtualHost would require a restart.

Not true; use the supplied host-manager (not manager) webapp to manipulate
Host entries on the fly. The only caveat is that it does not update
server.xml, so you would need to do that separately, or always use
host-manager to create the virtual hosts after a restart.

- Chuck

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Tomcat hangs for minutes between ContextConfig and StandardContext (Starting the app)

2009-10-06 Thread Law, Christopher

Hello, I'm running Tomcat 6.0.18 using Java 1.6.0_12 on Windows XP
professional.

 I have a problem that occurs during startup deploying a WAR file.
 Tomcat deploys the WAR file but then there is a delay of minutes
 before it tries to start the application.
 
 During the delay, there is no CPU usage and there is no abnormal
 activity that I can detect.  When Tomcat decides to start the
 application, it fires right up.
 
 It almost seems like Tomcat is blocked waiting for a reply from some
 request.
 
 My typical workflow consists of the following:
 Open a command shell.
   Edit code
   Build WAR
   Remove ${CATALINA_HOME}/webapps/*
   Remove ${CATALINA_HOME}/work/Catalina/localhost
   Remove ${CATALINA_HOME}/logs/*
   Copy the WAR file to ${CATALINA_HOME}/webapps
   From the command shell:  startup
   Test application
   From the command shell: shutdown
   
   repeat
 
 I set the log level for Tomcat to debug and this is the output, early
 on:
 
  2009-10-04 16:04:23,327 DEBUG main
 org.apache.catalina.startup.HostConfig - Watching WatchedResource
 'D:\apache-tomcat-6.0.18\conf\web.xml'
  2009-10-04 16:04:23,327 INFO main
 org.apache.catalina.startup.HostConfig - Deploying web application
 archive Spc.war
  2009-10-04 16:04:23,327 DEBUG main
 org.apache.catalina.core.ContainerBase - Add child
 StandardContext[/Spc] StandardEngine[Catalina].StandardHost[localhost]
  2009-10-04 16:04:23,327 DEBUG main
 org.apache.catalina.startup.ContextConfig - ContextConfig:
 Initializing
  2009-10-04 16:04:23,327 DEBUG main
 org.apache.catalina.startup.ContextConfig - Processing context [/Spc]
 configuration file D:\apache-tomcat-6.0.18 conf/context.xml
  2009-10-04 16:04:23,327 DEBUG main
 org.apache.catalina.startup.ContextConfig - Processing context [/Spc]
 configuration file D:\apache-tomcat-6.0.18\conf
 Catalina/localhost/context.xml.default
 
 [ This is almost a 4 minute delay ]
 
  2009-10-04 16:08:19,481 DEBUG main
 org.apache.catalina.core.StandardContext - Starting /Spc
  2009-10-04 16:08:19,481 DEBUG main
 org.apache.catalina.core.StandardContext - Registering
 j2eeType=WebModule,name=//localhost/Spc,J2EEApplication=none,J2EEServe
 r=none for null
 
 I'm at a loss since I startup and shutdown Tomcat during each
 iteration.  There is no context file in conf or
 conf/Catalina/localhost.  I don't delete to the RecycleBin.
 
 If anyone can tell me what I'm doing wrong or what may be causing the
 delay, I'd appreciate it.

Re: shutdown.sh and graceful shutdown

-BEGIN PGP SIGNED MESSAGE-
Hash: SHA1

Marcoi,

On 10/5/2009 8:07 AM, Marcoi wrote:
 I have a servlet with the following code:
 
  for (int i = 0; i  50; i++) { 
 System.out.println(waiting  + i); 
 Thread.currentThread().sleep(500); } PrintWriter writer =
 aResponse.getWriter(); writer.write(duh); writer.flush(); 
 
 
 and this is the output when I issue a request and then run
 ./shutdown.sh

[snip: evidence that the servlet doesn't survive the OP's expected 25
second lifespan]

Take a look at the unload() method in
http://svn.apache.org/repos/asf/tomcat/tc6.0.x/tags/TOMCAT_6_0_20/java/org/apache/catalina/core/StandardWrapper.java

You can see that Tomcat is rigged to wait a reasonable amount of time
for a servlet to complete before it is destroyed.

There is an unloadDelay member in that class that is apparently
inherited from the parent Container object (which is a Context) but
defaults to 2 seconds.

 As you can see it only waited for 3 seconds before taking down the
 server instead to let the request end is there a way to configure
 how long to wait?

If you look at the documentation for Context, you'll see that
unloadDelay is a configurable attribute of your webapp's Context
element:

http://tomcat.apache.org/tomcat-6.0-doc/config/context.html

Set this value to something longer than 2 seconds to allow your servlet
code more time to complete before the threads are killed.

Note that there does not seem to be a value to use for wait forever to
ensure that a request has been completed before shutting down. You'll
just have to set this value high enough to meet your needs.

- -chris
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Is ready the cluster deployer object?

2009-10-06 Thread Paolo Santarsiero

Hi, I need to deploy many applications on a Tomcat's cluster, so I'm looking
for an easy solution to do it. I had read about deployer element  in
cluster; the idea here is that if you have a cluster of Tomcat nodes that
are communicating together, the administrator may deploy distributable
webapps to one of the nodes in the cluster, and it will replicate the webapp
across the cluster to all of the other participating nodes so that each of
them will deploy the webapp. But at this time the element is broken, and
tomcat's team is working to fix it. Does someone know when it will going
out? Or are there actually other solutions to my problem? Thanks.

RE: alias problem in tomcat5.0 + apache1.3

2009-10-06 Thread Martin Gainty


i did'nt see where port 8085 specified in your connector setting?
i also would suggest specifying protocol in this case HTTP/1.1
Connector port=8085 protocol=HTTP/1.1 
   connectionTimeout=2 
   redirectPort=8443 /

the configuration for webapps appears incorrect i would suggest change 
D:/software/Tomcat 5.0/DOMAIN/DOMAIN
to
D:/software/Tomcat 5.0/webapps

//reflect the new appBase of webapps change
Host name=partha16 debug=1 appBase=DOMAIN unpackWARs=true 
autoDeploy=true
to
Host name=partha16 debug=1 appBase=webapps unpackWARs=true 
autoDeploy=true

namaste
Martin Gainty 
__ 
Please do not alter/modify or disrupt this transmission. Thank You




 Date: Tue, 6 Oct 2009 06:48:35 -0700
 From: partha_samanta...@rediffmail.com
 To: users@tomcat.apache.org
 Subject: alias problem in tomcat5.0 + apache1.3
 
 
 Hi,
 we have tomcat5.0 and apache1.3. my aim is instead of
 http://localhost:8085/DOMAIN, how can i call http://partha16/DOMAIN. for
 that i have mdified server.xml and httpd.conf file. but it says page not
 found.
 i have attached the httpd.conf file.
 first i tried with virtual host , but it has not worked. so i commented the
 virtualhost tag.
 Can some one help me in this configuration peoble?
 ==
 In apache: httpd.conf, i have following line:
 httpd.conf
 Directory D:/software/Tomcat 5.0/DOMAIN/DOMAIN
  Order allow,deny
  Allow from all   
 /Directory
 DocumentRoot D:/software/Tomcat 5.0/DOMAIN/DOMAIN
 Alias /partha16 D:/software/Tomcat 5.0/DOMAIN/DOMAIN/
 Location /partha16
 Order allow,deny
 Allow from all
 #   DirectoryIndex portal.htm
 /Location
 ==
 following lines has been added in server.xml
 server.xml
 
 Host name=partha16 debug=1 appBase=DOMAIN
unpackWARs=true autoDeploy=true
 
  Logger className=org.apache.catalina.logger.FileLogger
  directory=logs  prefix=DOMAIN_com. suffix=.log
  timestamp=true/
 
  Context path= docBase=DOMAIN debug=0 reloadable=true
 
  Logger className=org.apache.catalina.logger.FileLogger
  prefix=DOMAIN. suffix=.log timestamp=true /
 
  Resource name=mail/Session auth=Container
type=javax.mail.Session/
  ResourceParams name=mail/Session
  parameter
  namemail.smtp.host/name
  valuelocalhost/value
  /parameter
  /ResourceParams
 
  /Context
 /Host
 http://www.nabble.com/file/p25769060/httpd.conf httpd.conf 
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 http://www.nabble.com/alias-problem-in-tomcat5.0-%2B-apache1.3-tp25769060p25769060.html
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RE: How to Map domain to a context using Mod_jk

 From: gpike [mailto:gop...@gmail.com]
 Subject: RE: How to Map domain to a context using Mod_jk

 I thought a restart was needed because VirtualHost config is in the
 server.xml.

Tomcat has APIs for pretty much everything, and these are used by the parser 
for server.xml to create the internal objects, including those for each Host. 
 The host-manager webapp does the same.

 So are you saying using  host-manager I could add the new
 VirtualHost, but I would also need to add it to server.xml
 because the host-manager changes would be lost at restart?

Adding it to server.xml is one way; you could also keep track of the additional 
hosts separately and just call the host-manager webapp with the necessary data 
to add each one at Tomcat startup.

 - Chuck

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RE: Tomcat hangs for minutes between ContextConfig and StandardContext (Starting the app)

 From: Law, Christopher [mailto:chris@snapon.com]
 Subject: Tomcat hangs for minutes between ContextConfig and
 StandardContext (Starting the app)

 It almost seems like Tomcat is blocked waiting for a reply 
 from some request.

Quite possible.  Could be DNS resolution, or references in .xml files to 
external DTDs, among others.  You might want to run Wireshark while Tomcat is 
starting and just see what requests are being made.

Also, try taking a thread dump or three during the delay and see what's going 
on inside Tomcat.

 There is no context file in conf or conf/Catalina/localhost.

So you removed the standard conf/context.xml file that's distributed with 
Tomcat?

Are there any remote (CIFS/SMB) file references involved?

 - Chuck

THIS COMMUNICATION MAY CONTAIN CONFIDENTIAL AND/OR OTHERWISE PROPRIETARY 
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Re: Tomcat hangs for minutes between ContextConfig and StandardContext (Starting the app)

-BEGIN PGP SIGNED MESSAGE-
Hash: SHA1

Christopher,

On 10/6/2009 10:50 AM, Law, Christopher wrote:
Hello, I'm running Tomcat 6.0.18 using Java 1.6.0_12 on Windows XP
professional.

I have a problem that occurs during startup deploying a WAR file.
Tomcat deploys the WAR file but then there is a delay of minutes
before it tries to start the application.

During the delay, there is no CPU usage and there is no abnormal
activity that I can detect. When Tomcat decides to start the
application, it fires right up.

It almost seems like Tomcat is blocked waiting for a reply from some
request.

It might be. Can you take a thread dump during this delay to see what is
happening?

http://wiki.apache.org/tomcat/HowTo#How_do_I_obtain_a_thread_dump_of_my_running_webapp_.3F

My guess is that you are using XML validation and you have a firewall
that is preventing the JVM from contacting a remote server to fetch a DTD.

Another possibility is that SecureRandom is taking forever to
initialize: if your JVM is configured to use a blocking source of
entropy, that may be the problem. This often happens in *NIX
environments, but it appears that you are running on Microsoft Windows,
so that's unlikely to be the problem.

Any more information you can provide will certainly be helpful.

- -chris
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Re: shutdown.sh and graceful shutdown

2009-10-06 Thread Marcoi


Chris,


Christopher Schultz-2 wrote:
 
 If you look at the documentation for Context, you'll see that
 unloadDelay is a configurable attribute of your webapp's Context
 element:
 
 http://tomcat.apache.org/tomcat-6.0-doc/config/context.html
 

Exactly what I was looking for.

Thanks.

Marco

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Re: ssl_error_internal_error_alert in firefox only, dependent on jdk version (tomcat 5.5.26)

-BEGIN PGP SIGNED MESSAGE-
Hash: SHA1

Nada,

On 10/1/2009 4:36 PM, Nada O'Neal wrote:
 I'm stuck on Tomcat 5.5.26 to support a specific application. This is a
 Solaris 9 server with no Apache - tomcat is handling its own webserving.
 We're hoping to upgrade the JDK. I can use JDK-1.5.0_21 successfully.
 When I start tomcat with JDK-1.6.0_16, I get one specific issue...
 
 Firefox, but not Safari or IE, will report on https connections:
 
 Secure Connection Error
 An error occurred during a connection to mysite.com:8443.
 Peer reports it experienced an internal error.
 (Error code: ssl_error_internal_error_alert)

What kind of certificate is it? Self-Signed? Signed by a real CA? One of
those new-fangled EV certs?

If it's an EV cert, then you need not one but /two/ intermediate certs
to be installed in your keystore and provided to the client during the
SSL handshake.

- -chris
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Re: Tomcat Repsonse question...

-BEGIN PGP SIGNED MESSAGE-
Hash: SHA1

Tony,

On 10/4/2009 10:13 PM, Tony Anecito wrote:
 What class method for Tomcat would show the response time? I am using
 the jvirtualvm to profile the code (simplest and easy to use) but I
 need to know the name/method that would be closest to the socket to
 get an idea how fast the container/app is.

Look at the AccessLogValve that comes with Tomcat. That's the most
user-servicable component that can get you what you need.

If you want to instrument Tomcat itself, you'll probably have to look at
modifying whatever Connector you are using (HTTP, AJP, etc.). If you
want to go bare-metal, you can always attach a packet sniffer to the TCP
port and time everything. For that, you'll want Wireshark or even
libpcap if you don't really care about navigating the packets in a
convenient way.

- -chris

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Re: java.lang.OutOfMemoryError: Java heap space

Rainer,

Thanks for looking at those long thread dumps for me!!

I am sorry. I did NOT take these dumps at the right time (i.e. when
Tomcat was inundated with requests and couldn't cope with the load).
After I increased the heap size to 512MB (from 64MB default), I am not
getting the OutOfMemoryError(s) anymore. After I set KeepAlive On
(Thanks Andre!), the number httpd processes isn't increasing either.
The number of httpd processes increased from 8 to 21 and stayed there
for more than 16 hours now. If the number of httpd processes gets out
of control again, I will definitely take thread dumps once again.

However, I doubt the issue is fixed because I should have seen this
issue long time ago (since I haven't changed any code nor the traffic
to our websites increased in a long while).

Should I just wait and see or are there any tests that I can do?

Your contribution to this forum is amazing, Rainer. I am grateful to
you and Andre for your efforts. Thank you!

Regards,
Joe



On Tue, Oct 6, 2009 at 7:25 AM, Rainer Jung rainer.j...@kippdata.de wrote:
 On 05.10.2009 18:58, Joe Hansen wrote:
 Thank you so much for your tips, Rainer!

 The websites went down yet again. Increasing the java heap size took
 care of the OutOfMemoryError, but the number of httpd processes keep
 increasing until the websites crash. I haven't added any new code in
 the past few months, hence I am surprised why the requests are getting
 stuck. Here's a link to the tomcat thread dumps:
 http://pastebin.com/m17eea139

 Please let me know if you cannot view it and I will email the relevant
 portion of the catalina.out file to you. Is there an easy way to find
 out what code is causing the requests to get stuck?

 The dump file contains three thread dumps.

 The things all dumps have in common:

 - 60 threads for the quartz scheduler, all idle
 - 13 threads in the AJP connection pool, connected to Apache, but idle
 waiting for the next request to be send (the same threads in all three
 dumps)
 - 6 store plus 6 expiry threads of the EHCache, seems idle
 - 1 AJP + 1 HTTP(S) thread (port 8443) waiting to accept the next new
 connection to come in
 - 2 AJP + 3 HTTP(S) threads (port 8443) sitting idle the pool, waiting
 for work
 - a couple of other normal threads not directly related to request handling

 So the time you took the three dumps, this Tomcat was completely idle
 and did not have a single request to handle.

 If you are completely sure, you took the dumps while there was a storm
 of requests and your system couldn't cope the load, something has
 prevented the requests to ever reach Tomcat.

 I don't have your Tomcat version at hand at the moment, but for some
 time very special OutOfMemory errors (could not create native thread)
 lead to a situation, where Tomcat simply wouldn't accept any new
 connections. Although you report OutOfMemory errors, I'm not directly
 suggesting that that is your problem here. There might still be a
 relation though.

 Are you sure, that you took the dumps for the right Tomcat at the right
 time?

 Regards,

 Rainer

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RE: Tomcat training at ApacheCon

2009-10-06 Thread Martin Gainty


sounds great..any sessions for chicago,ny,boston or dc?

thanks,
Martin Gainty 
__ 





 Date: Tue, 6 Oct 2009 07:30:20 -0600
 From: devli...@hanik.com
 To: users@tomcat.apache.org
 Subject: Tomcat training at ApacheCon
 
 In addition to the Tomcat Track, 
 http://us.apachecon.com/c/acus2009/schedule#tomcat , we are also putting on a 
 2 day Tomcat training, http://us.apachecon.com/c/acus2009/sessions/452 ,
 
 It's a great track for both administrators and developers and goes above and 
 beyond just the configuration files. If you have any questions, feel free to 
 contact me directly.
 
 A recent feathercast about the Tomcat training.
 http://feathercast.org/?p=86
 
 
 best
 Filip
 
 
 
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Expiration date on static content?

2009-10-06 Thread pieroxy

Hello,
I do have a tomcat working for several years on my production servers, and I
am trying to optimize a thing or two. I already use the gzip compression,
and this works very well.

However, I noticed that all my static content is served with no expiration
date at all. This doesn't tell browsers when to revalidate the static
content and let them decide of the caching policy for my site.

Is there a place to configure something like this on a Tomcat 6.0.20
install? Is this in the server.xml or by webapp in a context.xml file?
web.xml?

I couldn't figure out a way to do this...

Thanks for your help

RE: Expiration date on static content?

2009-10-06 Thread Jeffrey Janner

http://onjava.com/pub/a/onjava/2004/03/03/filters.html

-Original Message-
From: pieroxy [mailto:pier...@gmail.com] 
Sent: Tuesday, October 06, 2009 12:03 PM
To: Tomcat Users List
Subject: Expiration date on static content?

Hello,
I do have a tomcat working for several years on my production servers,
and I
am trying to optimize a thing or two. I already use the gzip
compression,
and this works very well.

However, I noticed that all my static content is served with no
expiration
date at all. This doesn't tell browsers when to revalidate the static
content and let them decide of the caching policy for my site.

Is there a place to configure something like this on a Tomcat 6.0.20
install? Is this in the server.xml or by webapp in a context.xml file?
web.xml?

I couldn't figure out a way to do this...

Thanks for your help

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Re: Tomcat hangs for minutes between ContextConfig and StandardContext (Starting the app)

2009-10-06 Thread Pid Ster

Does the app perform normally when it does start up?

I recently experienced this when I inadvertently placed the same jar
in two places - the app displayed other errors when it finally loaded.

p

--

On 6 Oct 2009, at 15:52, Law, Christopher chris@snapon.com
wrote:

 Hello, I'm running Tomcat 6.0.18 using Java 1.6.0_12 on Windows XP
 professional.

 I have a problem that occurs during startup deploying a WAR file.
 Tomcat deploys the WAR file but then there is a delay of minutes
 before it tries to start the application.

 During the delay, there is no CPU usage and there is no abnormal
 activity that I can detect.  When Tomcat decides to start the
 application, it fires right up.

 It almost seems like Tomcat is blocked waiting for a reply from some
 request.

 My typical workflow consists of the following:
Open a command shell.
Edit code
Build WAR
Remove ${CATALINA_HOME}/webapps/*
Remove ${CATALINA_HOME}/work/Catalina/localhost
Remove ${CATALINA_HOME}/logs/*
Copy the WAR file to ${CATALINA_HOME}/webapps
From the command shell:  startup
Test application
From the command shell: shutdown

repeat

 I set the log level for Tomcat to debug and this is the output, early
 on:

 2009-10-04 16:04:23,327 DEBUG main
 org.apache.catalina.startup.HostConfig - Watching WatchedResource
 'D:\apache-tomcat-6.0.18\conf\web.xml'
 2009-10-04 16:04:23,327 INFO main
 org.apache.catalina.startup.HostConfig - Deploying web application
 archive Spc.war
 2009-10-04 16:04:23,327 DEBUG main
 org.apache.catalina.core.ContainerBase - Add child
 StandardContext[/Spc] StandardEngine[Catalina].StandardHost
 [localhost]
 2009-10-04 16:04:23,327 DEBUG main
 org.apache.catalina.startup.ContextConfig - ContextConfig:
 Initializing
 2009-10-04 16:04:23,327 DEBUG main
 org.apache.catalina.startup.ContextConfig - Processing context [/Spc]
 configuration file D:\apache-tomcat-6.0.18 conf/context.xml
 2009-10-04 16:04:23,327 DEBUG main
 org.apache.catalina.startup.ContextConfig - Processing context [/Spc]
 configuration file D:\apache-tomcat-6.0.18\conf
 Catalina/localhost/context.xml.default

 [ This is almost a 4 minute delay ]

 2009-10-04 16:08:19,481 DEBUG main
 org.apache.catalina.core.StandardContext - Starting /Spc
 2009-10-04 16:08:19,481 DEBUG main
 org.apache.catalina.core.StandardContext - Registering
 j2eeType=WebModule,name=//localhost/
 Spc,J2EEApplication=none,J2EEServe
 r=none for null

 I'm at a loss since I startup and shutdown Tomcat during each
 iteration.  There is no context file in conf or
 conf/Catalina/localhost.  I don't delete to the RecycleBin.

 If anyone can tell me what I'm doing wrong or what may be causing the
 delay, I'd appreciate it.


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Re: Tomcat Repsonse question...

2009-10-06 Thread Tony Anecito

Thnaks Chritopher. 

I am running JBoss and Apache on the same box so not sure if the TCP/IP stack 
is bypassed in that case.
What I am trying to do is find out where my bottlenecks are. In my code I 
instrument the response time for my web service and I am below 1msec and if 
visualvm is right more like 20microseconds response time for the method exposed 
for my web service. At my Thick client over the lan I am seeing 3-5msec 
response time using JBoss 4.2.2. So trying to go from tier to tier to see how 
fast the tiers are and if there is anything else I can tune.
I just updated to JBoss 5.1.0 and am seeing 1msec slower or 4-5msec but have 
not tuned it yet except for jvm settings.

I am using ajp for the connector. I plan to upgrade my Apache web server soon 
to the latest version hoping for performance improvement for the ajp connector.

I will look into what you mentioned.

Best Regards,
-Tony

--- On Tue, 10/6/09, Christopher Schultz ch...@christopherschultz.net wrote:

 From: Christopher Schultz ch...@christopherschultz.net
 Subject: Re: Tomcat Repsonse question...
 To: Tomcat Users List users@tomcat.apache.org
 Date: Tuesday, October 6, 2009, 10:24 AM
 -BEGIN PGP SIGNED MESSAGE-
 Hash: SHA1
 
 Tony,
 
 On 10/4/2009 10:13 PM, Tony Anecito wrote:
  What class method for Tomcat would show the response
 time? I am using
  the jvirtualvm to profile the code (simplest and easy
 to use) but I
  need to know the name/method that would be closest to
 the socket to
  get an idea how fast the container/app is.
 
 Look at the AccessLogValve that comes with Tomcat. That's
 the most
 user-servicable component that can get you what you need.
 
 If you want to instrument Tomcat itself, you'll probably
 have to look at
 modifying whatever Connector you are using (HTTP, AJP,
 etc.). If you
 want to go bare-metal, you can always attach a packet
 sniffer to the TCP
 port and time everything. For that, you'll want Wireshark
 or even
 libpcap if you don't really care about navigating the
 packets in a
 convenient way.
 
 - -chris
 
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Re: alias problem in tomcat5.0 + apache1.3

2009-10-06 Thread Pid Ster

On 6 Oct 2009, at 14:49, partha_ctc partha_samanta...@rediffmail.com
wrote:

 Hi,
 we have tomcat5.0 and apache1.3. my aim is instead of
 http://localhost:8085/DOMAIN, how can i call http://partha16/DOMAIN.
 for
 that i have mdified server.xml and httpd.conf file. but it says page
 not
 found.
 i have attached the httpd.conf file.
 first i tried with virtual host , but it has not worked. so i
 commented the
 virtualhost tag.
 Can some one help me in this configuration peoble?

A thorough reading of the documentation would probably help. You seem
to have confusing arrangement there.

Http://tomcat.apache.org/

Look for virtual hosts, under configuration.

5.0 is no longer supported - you should use a more recent version if
possible.

p


 ==
 In apache: httpd.conf, i have following line:
 httpd.conf
 Directory D:/software/Tomcat 5.0/DOMAIN/DOMAIN
 Order allow,deny
 Allow from all
 /Directory
 DocumentRoot D:/software/Tomcat 5.0/DOMAIN/DOMAIN
 Alias /partha16 D:/software/Tomcat 5.0/DOMAIN/DOMAIN/
 Location /partha16
Order allow,deny
Allow from all
 #   DirectoryIndex portal.htm
 /Location
 ==
 following lines has been added in server.xml
 server.xml

 Host name=partha16 debug=1 appBase=DOMAIN
   unpackWARs=true autoDeploy=true

 Logger className=org.apache.catalina.logger.FileLogger
 directory=logs  prefix=DOMAIN_com. suffix=.log
 timestamp=true/

 Context path= docBase=DOMAIN debug=0 reloadable=true

 Logger className=org.apache.catalina.logger.FileLogger
 prefix=DOMAIN. suffix=.log timestamp=true /

 Resource name=mail/Session auth=Container
   type=javax.mail.Session/
 ResourceParams name=mail/Session
 parameter
 namemail.smtp.host/name
 valuelocalhost/value
 /parameter
 /ResourceParams

 /Context
 /Host
 http://www.nabble.com/file/p25769060/httpd.conf httpd.conf
 --
 View this message in context: 
 http://www.nabble.com/alias-problem-in-tomcat5.0-%2B-apache1.3-tp25769060p25769060.html
 Sent from the Tomcat - User mailing list archive at Nabble.com.


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Re: java.lang.OutOfMemoryError: Java heap space

Rainer,

I spoke to soon! As I suspected, the problem isn't fixed yet and the
websites crashed again. This time I took three thread dumps at the
time tomcat was down. Here they are: http://pastebin.com/m2a7e1198

I will learn from your previous analysis of the thread dumps and I try
to understand what's happening.

Thanks,
Joe

On Tue, Oct 6, 2009 at 10:23 AM, Joe Hansen joe.hansen...@gmail.com wrote:
 Rainer,

 Thanks for looking at those long thread dumps for me!!

 I am sorry. I did NOT take these dumps at the right time (i.e. when
 Tomcat was inundated with requests and couldn't cope with the load).
 After I increased the heap size to 512MB (from 64MB default), I am not
 getting the OutOfMemoryError(s) anymore. After I set KeepAlive On
 (Thanks Andre!), the number httpd processes isn't increasing either.
 The number of httpd processes increased from 8 to 21 and stayed there
 for more than 16 hours now. If the number of httpd processes gets out
 of control again, I will definitely take thread dumps once again.

 However, I doubt the issue is fixed because I should have seen this
 issue long time ago (since I haven't changed any code nor the traffic
 to our websites increased in a long while).

 Should I just wait and see or are there any tests that I can do?

 Your contribution to this forum is amazing, Rainer. I am grateful to
 you and Andre for your efforts. Thank you!

 Regards,
 Joe



 On Tue, Oct 6, 2009 at 7:25 AM, Rainer Jung rainer.j...@kippdata.de wrote:
 On 05.10.2009 18:58, Joe Hansen wrote:
 Thank you so much for your tips, Rainer!

 The websites went down yet again. Increasing the java heap size took
 care of the OutOfMemoryError, but the number of httpd processes keep
 increasing until the websites crash. I haven't added any new code in
 the past few months, hence I am surprised why the requests are getting
 stuck. Here's a link to the tomcat thread dumps:
 http://pastebin.com/m17eea139

 Please let me know if you cannot view it and I will email the relevant
 portion of the catalina.out file to you. Is there an easy way to find
 out what code is causing the requests to get stuck?

 The dump file contains three thread dumps.

 The things all dumps have in common:

 - 60 threads for the quartz scheduler, all idle
 - 13 threads in the AJP connection pool, connected to Apache, but idle
 waiting for the next request to be send (the same threads in all three
 dumps)
 - 6 store plus 6 expiry threads of the EHCache, seems idle
 - 1 AJP + 1 HTTP(S) thread (port 8443) waiting to accept the next new
 connection to come in
 - 2 AJP + 3 HTTP(S) threads (port 8443) sitting idle the pool, waiting
 for work
 - a couple of other normal threads not directly related to request handling

 So the time you took the three dumps, this Tomcat was completely idle
 and did not have a single request to handle.

 If you are completely sure, you took the dumps while there was a storm
 of requests and your system couldn't cope the load, something has
 prevented the requests to ever reach Tomcat.

 I don't have your Tomcat version at hand at the moment, but for some
 time very special OutOfMemory errors (could not create native thread)
 lead to a situation, where Tomcat simply wouldn't accept any new
 connections. Although you report OutOfMemory errors, I'm not directly
 suggesting that that is your problem here. There might still be a
 relation though.

 Are you sure, that you took the dumps for the right Tomcat at the right
 time?

 Regards,

 Rainer

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Re: Tomcat hangs for minutes between ContextConfig and StandardContext (Starting the app)

On 06.10.2009 17:41, Christopher Schultz wrote:
Christopher,

On 10/6/2009 10:50 AM, Law, Christopher wrote:
Hello, I'm running Tomcat 6.0.18 using Java 1.6.0_12 on Windows XP
professional.

I have a problem that occurs during startup deploying a WAR file.
Tomcat deploys the WAR file but then there is a delay of minutes
before it tries to start the application.

During the delay, there is no CPU usage and there is no abnormal
activity that I can detect. When Tomcat decides to start the
application, it fires right up.

It almost seems like Tomcat is blocked waiting for a reply from some
request.

It might be. Can you take a thread dump during this delay to see what is
happening?

http://wiki.apache.org/tomcat/HowTo#How_do_I_obtain_a_thread_dump_of_my_running_webapp_.3F

My guess is that you are using XML validation and you have a firewall
that is preventing the JVM from contacting a remote server to fetch a DTD.

You can also google for xml entity resolution.

... and should only be a problem if SSL is involved.

Regards,

Rainer

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Re: java.lang.OutOfMemoryError: Java heap space

There were 29 httpd processes running when the websites crashed.

One thing that was clear from the thread dumps was there were lots of
entries for org.jasig.cas.ticket.registry.support.DefaultTicketRegistryCleaner:
Starting cleaning of expired tickets from ticket registry at ...

Does that indicate that there is something wrong with my CAS configuration?

Here's the thread count from the first thread dump:
DefaultQuartzScheduler_QuartzSchedulerThread
4 sleeping + 2 waiting on condition = 6 Total

DefaultQuartzScheduler_Worker
60 waiting = 60 Total

Store ticketCache Expiry Thread (ehcache)
6 waiting on condition = 6 Total

Store ticketCache Spool Thread (ehcache)
6 waiting on condition = 6 Total

TP-ProcessorXY daemon runnable
20 runnable (mod_jk?) + 3 waiting = 23 Total

Java2D Disposer daemon
1 waiting = 1 Total

http-8443-Monitor
1 waiting = 1 Total

http-8443-Processor
3 waiting + 1 runnable = 4 Total

ContainerBackgroundProcessor
1 waiting on condition = 1 Total

Low Memory Detector
1 runnable = 1 Total

CompilerThread
2 waiting on condition = 2 Total

AdapterThread
1 waiting on condition = 1 Total

Signal Dispatcher
1 runnable = 1 Total

Finalizer
1 waiting = 1 Total

Reference Handler
1 waiting = 1 Total

org.apache.catalina.startup.Bootstrap.main
1 runnable = 1 Total

VM Thread
1 runnable = 1 Total

GC task thread
1 runnable = 1 Total

VM Periodic Task Thread
1 waiting on condition = 1 Total


Thanks,
Joe

On Tue, Oct 6, 2009 at 11:44 AM, Joe Hansen joe.hansen...@gmail.com wrote:
 Rainer,

 I spoke to soon! As I suspected, the problem isn't fixed yet and the
 websites crashed again. This time I took three thread dumps at the
 time tomcat was down. Here they are: http://pastebin.com/m2a7e1198

 I will learn from your previous analysis of the thread dumps and I try
 to understand what's happening.

 Thanks,
 Joe

 On Tue, Oct 6, 2009 at 10:23 AM, Joe Hansen joe.hansen...@gmail.com wrote:
 Rainer,

 Thanks for looking at those long thread dumps for me!!

 I am sorry. I did NOT take these dumps at the right time (i.e. when
 Tomcat was inundated with requests and couldn't cope with the load).
 After I increased the heap size to 512MB (from 64MB default), I am not
 getting the OutOfMemoryError(s) anymore. After I set KeepAlive On
 (Thanks Andre!), the number httpd processes isn't increasing either.
 The number of httpd processes increased from 8 to 21 and stayed there
 for more than 16 hours now. If the number of httpd processes gets out
 of control again, I will definitely take thread dumps once again.

 However, I doubt the issue is fixed because I should have seen this
 issue long time ago (since I haven't changed any code nor the traffic
 to our websites increased in a long while).

 Should I just wait and see or are there any tests that I can do?

 Your contribution to this forum is amazing, Rainer. I am grateful to
 you and Andre for your efforts. Thank you!

 Regards,
 Joe



 On Tue, Oct 6, 2009 at 7:25 AM, Rainer Jung rainer.j...@kippdata.de wrote:
 On 05.10.2009 18:58, Joe Hansen wrote:
 Thank you so much for your tips, Rainer!

 The websites went down yet again. Increasing the java heap size took
 care of the OutOfMemoryError, but the number of httpd processes keep
 increasing until the websites crash. I haven't added any new code in
 the past few months, hence I am surprised why the requests are getting
 stuck. Here's a link to the tomcat thread dumps:
 http://pastebin.com/m17eea139

 Please let me know if you cannot view it and I will email the relevant
 portion of the catalina.out file to you. Is there an easy way to find
 out what code is causing the requests to get stuck?

 The dump file contains three thread dumps.

 The things all dumps have in common:

 - 60 threads for the quartz scheduler, all idle
 - 13 threads in the AJP connection pool, connected to Apache, but idle
 waiting for the next request to be send (the same threads in all three
 dumps)
 - 6 store plus 6 expiry threads of the EHCache, seems idle
 - 1 AJP + 1 HTTP(S) thread (port 8443) waiting to accept the next new
 connection to come in
 - 2 AJP + 3 HTTP(S) threads (port 8443) sitting idle the pool, waiting
 for work
 - a couple of other normal threads not directly related to request handling

 So the time you took the three dumps, this Tomcat was completely idle
 and did not have a single request to handle.

 If you are completely sure, you took the dumps while there was a storm
 of requests and your system couldn't cope the load, something has
 prevented the requests to ever reach Tomcat.

 I don't have your Tomcat version at hand at the moment, but for some
 time very special OutOfMemory errors (could not create native thread)
 lead to a situation, where Tomcat simply wouldn't accept any new
 connections. Although you report OutOfMemory errors, I'm not directly
 suggesting that that is your problem here. There might still be a
 relation though.

 Are you sure, that you took the dumps for the right Tomcat at the right

RE: Tomcat hangs for minutes between ContextConfig and StandardContext (Starting the app)

2009-10-06 Thread Law, Christopher

Thanks for the reply.  A little more information:

1. The app always works after it starts up (assuming I didn't introduce
any errors).

2. If, after the app starts up (whether I exercise it or not), I
shutdown Tomcat, remove the exact same stuff from Tomcat (WAR, exploded
WAR, work/Catalina/localhost and logs), copy the WAR to webapps and
startup Tomcat, there is NO (appreciable) delay, the app starts right up
and runs.

3. The delay only occurs when the WAR file has changed.

4. If I reboot my machine, the first time I deploy a WAR, there is a
minor delay (~15 seconds) between the deploy and the startup.

Thanks for the tips on the thread dump.  I will try to gather some info
and post it.


-Original Message-
From: Christopher Schultz [mailto:ch...@christopherschultz.net] 
Sent: Tuesday, October 06, 2009 11:41 AM
To: Tomcat Users List
Subject: Re: Tomcat hangs for minutes between ContextConfig and
StandardContext (Starting the app)

-BEGIN PGP SIGNED MESSAGE-
Hash: SHA1

Christopher,

On 10/6/2009 10:50 AM, Law, Christopher wrote:
 Hello, I'm running Tomcat 6.0.18 using Java 1.6.0_12 on Windows XP 
 professional.
 
 I have a problem that occurs during startup deploying a WAR file.
 Tomcat deploys the WAR file but then there is a delay of minutes 
 before it tries to start the application.

 During the delay, there is no CPU usage and there is no abnormal 
 activity that I can detect.  When Tomcat decides to start the 
 application, it fires right up.

 It almost seems like Tomcat is blocked waiting for a reply from some 
 request.

It might be. Can you take a thread dump during this delay to see what is
happening?

http://wiki.apache.org/tomcat/HowTo#How_do_I_obtain_a_thread_dump_of_my_
running_webapp_.3F

My guess is that you are using XML validation and you have a firewall
that is preventing the JVM from contacting a remote server to fetch a
DTD.

Another possibility is that SecureRandom is taking forever to
initialize: if your JVM is configured to use a blocking source of
entropy, that may be the problem. This often happens in *NIX
environments, but it appears that you are running on Microsoft Windows,
so that's unlikely to be the problem.

Any more information you can provide will certainly be helpful.

- -chris
-BEGIN PGP SIGNATURE-
Version: GnuPG v1.4.9 (MingW32)
Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org/

iEYEARECAAYFAkrLZSQACgkQ9CaO5/Lv0PBTXgCfeVocP4clX5dBblkIKaBwrHkG
rHAAn1klDppfjMEU+vA4wDQQqLsNryJP
=Sfu+
-END PGP SIGNATURE-

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Re: java.lang.OutOfMemoryError: Java heap space

On 06.10.2009 19:44, Joe Hansen wrote:
I will only comment the threads for the AJP pool. Everything else seems
not relevant:

Dump 1:

20 threads connected to Apache, waiting for the next request
3  threads idle in the pool
1  thread waiting for the next connection
0  threads working on requests

Dump 2:

12 threads connected to Apache, waiting for the next request
5  threads idle in the pool
1  thread waiting for the next connection
14 threads working on requests

Dump 3:

11 threads connected to Apache, waiting for the next request
5  threads idle in the pool
1  thread waiting for the next connection
15 threads working on requests

Dump 4:

11 threads connected to Apache, waiting for the next request
5  threads idle in the pool
1  thread waiting for the next connection
15 threads working on requests

Those busy threads in dump 2, 3 and 4 are the same except for one, which
started only in dump 3.

Most of them are busy working on data. They are *not* waiting for some
other system, like database or similar.

Out of the 14+15+15 thread stacks, that are interesting, 42 work on some
DAOs.

Those are the DAO methods they work on:

  18 tw.beans.TWFotoSetDAO.getFotosetFotos
  11 tw.beans.TWEmailUpdateListDAO.getEmailUpdateList
   3 tw.beans.TWFotoSetListDAO.getAllFotosets
   3 tw.beans.TWFotoSetDAO.getFotosetFotosQuery2
   3 tw.beans.TWFotoSetDAO.getFotosetFotosQuery
   3 tw.beans.TWEmailUpdateDAO.getEmailUpdate
   1 tw.beans.TWEmailUpdateListDAO.getEmailUpdateListQuery

It seems your application is CPU heavy. Either the data objects handled
are to heavy weight (maybe some user having huge Fotoset or Email list)
or the request rate is simply to large. Is the CPU saturated during the
problems?

I would activate a good access log and try to find out from that and
your webapp logs what maybe special about these web requests or users.

Regards,

Rainer

 I will learn from your previous analysis of the thread dumps and I try
 to understand what's happening.
 
 Thanks,
 Joe
 
 On Tue, Oct 6, 2009 at 10:23 AM, Joe Hansen joe.hansen...@gmail.com wrote:
 Rainer,

 Thanks for looking at those long thread dumps for me!!

 I am sorry. I did NOT take these dumps at the right time (i.e. when
 Tomcat was inundated with requests and couldn't cope with the load).
 After I increased the heap size to 512MB (from 64MB default), I am not
 getting the OutOfMemoryError(s) anymore. After I set KeepAlive On
 (Thanks Andre!), the number httpd processes isn't increasing either.
 The number of httpd processes increased from 8 to 21 and stayed there
 for more than 16 hours now. If the number of httpd processes gets out
 of control again, I will definitely take thread dumps once again.

 However, I doubt the issue is fixed because I should have seen this
 issue long time ago (since I haven't changed any code nor the traffic
 to our websites increased in a long while).

 Should I just wait and see or are there any tests that I can do?

 Your contribution to this forum is amazing, Rainer. I am grateful to
 you and Andre for your efforts. Thank you!

 Regards,
 Joe



 On Tue, Oct 6, 2009 at 7:25 AM, Rainer Jung rainer.j...@kippdata.de wrote:
 On 05.10.2009 18:58, Joe Hansen wrote:
 Thank you so much for your tips, Rainer!

 The websites went down yet again. Increasing the java heap size took
 care of the OutOfMemoryError, but the number of httpd processes keep
 increasing until the websites crash. I haven't added any new code in
 the past few months, hence I am surprised why the requests are getting
 stuck. Here's a link to the tomcat thread dumps:
 http://pastebin.com/m17eea139

 Please let me know if you cannot view it and I will email the relevant
 portion of the catalina.out file to you. Is there an easy way to find
 out what code is causing the requests to get stuck?

 The dump file contains three thread dumps.

 The things all dumps have in common:

 - 60 threads for the quartz scheduler, all idle
 - 13 threads in the AJP connection pool, connected to Apache, but idle
 waiting for the next request to be send (the same threads in all three
 dumps)
 - 6 store plus 6 expiry threads of the EHCache, seems idle
 - 1 AJP + 1 HTTP(S) thread (port 8443) waiting to accept the next new
 connection to come in
 - 2 AJP + 3 HTTP(S) threads (port 8443) sitting idle the pool, waiting
 for work
 - a couple of other normal threads not directly related to request handling

 So the time you took the three dumps, this Tomcat was completely idle
 and did not have a single request to handle.

 If you are completely sure, you took the dumps while there was a storm
 of requests and your system couldn't cope the load, something has
 prevented the requests to ever reach Tomcat.

 I don't have your Tomcat version at hand at the moment, but for some
 time very special OutOfMemory errors (could not create native thread)
 lead to a situation, where Tomcat simply wouldn't accept any new
 connections. Although you report OutOfMemory errors, I'm not directly

Re: java.lang.OutOfMemoryError: Java heap space

Thanks for your feedback, Rainer.

The DAO objects/methods that you've mentioned are used for almost
every page on our website. So I am not surprised to find them in the
thread dumps. However, as you pointed out, the parameters to these
methods change depending on the page they are on and if the user is
logged in or not.

I did not check the CPU usage when the issue happened.  I just checked
the web application logs and found that first there was an
OutOfMemoryError, followed by MySQL errors when
TWFotoSetListDAO.getAllFotosets tried to get a database connection.

I am *guessing* :
I changed the session timeout to 4 hours for the Jasig CAS
Single-Signon web application. This stores a ton of tickets in memory.
During a 4 hour period when there are more http requests, the 512MB of
Java Heap space is not sufficient to store all these tickets. During
that time OutOfMemoryError happens and all hell breaks loose
subsequently.

I probably should decrease the session-timeout to 1 hour or so and see
if that changes things. Would you agree, Rainer?

Thanks,
Joe

2009 Oct 06 / 10:48:43 ERROR -
[org.apache.catalina.core.ContainerBase] : Exception invoking periodic
operation:
java.lang.OutOfMemoryError: Java heap space

2009 Oct 06 / 10:48:43 FATAL - [tw.conn.TWConnectionManager] :
com.mysql.jdbc.CommunicationsException: Communications link failure
due to underlying exception:

** BEGIN NESTED EXCEPTION **

java.io.EOFException

STACKTRACE:

java.io.EOFException
at com.mysql.jdbc.MysqlIO.readFully(MysqlIO.java:1905)
at com.mysql.jdbc.MysqlIO.reuseAndReadPacket(MysqlIO.java:2351)
at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:2862)
at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:771)
at com.mysql.jdbc.MysqlIO.secureAuth411(MysqlIO.java:3649)
at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1176)
at com.mysql.jdbc.Connection.createNewIO(Connection.java:2558)
at com.mysql.jdbc.Connection.init(Connection.java:1485)
at 
com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:266)
at 
org.apache.tomcat.dbcp.dbcp.DriverConnectionFactory.createConnection(DriverConnectionFactory.java:37)
at 
org.apache.tomcat.dbcp.dbcp.PoolableConnectionFactory.makeObject(PoolableConnectionFactory.java:290)
at 
org.apache.tomcat.dbcp.pool.impl.GenericObjectPool.borrowObject(GenericObjectPool.java:771)
at 
org.apache.tomcat.dbcp.dbcp.AbandonedObjectPool.borrowObject(AbandonedObjectPool.java:74)
at 
org.apache.tomcat.dbcp.dbcp.PoolingDataSource.getConnection(PoolingDataSource.java:95)
at 
org.apache.tomcat.dbcp.dbcp.BasicDataSource.getConnection(BasicDataSource.java:540)
at tw.conn.TWConnectionManager.getConnection(Unknown Source)
at tw.beans.TWFotoSetListDAO.getAllFotosets(Unknown Source)
at tw.beans.TWViewBean.getAllFotosets(Unknown Source)
at tw.servlet.TWQueryServlet.doPost(Unknown Source)
at tw.servlet.TWQueryServlet.doGet(Unknown Source)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:689)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
at 
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252)
at 
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
at 
org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:672)
at 
org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:463)
at 
org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:398)
at 
org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:301)
at 
org.apache.jsp.groupby_005fitems_jsp._jspService(groupby_005fitems_jsp.java:152)
at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:97)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
at 
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:332)
at 
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:314)
at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:264)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
at 
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252)
at 
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
at 
org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213)
at 
org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:178)
at 
org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:432)
at 
org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:126)
at

Re: Tomcat training at ApacheCon

2009-10-06 Thread Filip Hanik - Dev Lists


On 10/06/2009 10:55 AM, Martin Gainty wrote:

sounds great..any sessions for chicago,ny,boston or dc?
   


for ApacheCon? none planned that I know of.


thanks,
Martin Gainty
__





   

Date: Tue, 6 Oct 2009 07:30:20 -0600
From: devli...@hanik.com
To: users@tomcat.apache.org
Subject: Tomcat training at ApacheCon

In addition to the Tomcat Track, 
http://us.apachecon.com/c/acus2009/schedule#tomcat , we are also putting on a 2 
day Tomcat training, http://us.apachecon.com/c/acus2009/sessions/452 ,

It's a great track for both administrators and developers and goes above and 
beyond just the configuration files. If you have any questions, feel free to 
contact me directly.

A recent feathercast about the Tomcat training.
http://feathercast.org/?p=86


best
Filip



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RE: Tomcat training at ApacheCon

2009-10-06 Thread Martin Gainty


bit of a stretch for folks on the east coast or midwest

thanks filip,
Martin Gainty 
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 Date: Tue, 6 Oct 2009 13:45:53 -0600
 From: devli...@hanik.com
 To: users@tomcat.apache.org
 Subject: Re: Tomcat training at ApacheCon
 
 On 10/06/2009 10:55 AM, Martin Gainty wrote:
  sounds great..any sessions for chicago,ny,boston or dc?
 
 
 for ApacheCon? none planned that I know of.
 
  thanks,
  Martin Gainty
  __
 
 
 
 
 
 
  Date: Tue, 6 Oct 2009 07:30:20 -0600
  From: devli...@hanik.com
  To: users@tomcat.apache.org
  Subject: Tomcat training at ApacheCon
 
  In addition to the Tomcat Track, 
  http://us.apachecon.com/c/acus2009/schedule#tomcat , we are also putting 
  on a 2 day Tomcat training, 
  http://us.apachecon.com/c/acus2009/sessions/452 ,
 
  It's a great track for both administrators and developers and goes above 
  and beyond just the configuration files. If you have any questions, feel 
  free to contact me directly.
 
  A recent feathercast about the Tomcat training.
  http://feathercast.org/?p=86
 
 
  best
  Filip
 
 
 
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Re: ssl_error_internal_error_alert in firefox only, dependent on jdk version (tomcat 5.5.26)

2009-10-06 Thread Nada O'Neal


Hi Chris,

Thanks for responding to my question!

I don't have an EV cert, it's just a standard cert signed by Equifax. I 
have similar certs working on other servers. Again, it's the upgrade 
from one java to another that seems to cause the problem - running java 
1.5, I don't have this issue.


But, this may be a case of me getting away with something under 1.5 that 
I wouldn't be able to get away with under 1.6.


The two keys in the keystore currently look like:

$ keytool -list -keystore /path/to/keystore
Enter keystore password:

Keystore type: JKS
Keystore provider: SUN

Your keystore contains 2 entries

root, Sep 29, 2009, trustedCertEntry,
Certificate fingerprint (MD5): [...]
tomcat, Sep 29, 2009, PrivateKeyEntry,
Certificate fingerprint (MD5): [...]

... is this wrong?

Thanks again for writing back, I really appreciate it.

Christopher Schultz ch...@christopherschultz.net wrote:

Firefox, but not Safari or IE, will report on https connections:

Secure Connection Error
An error occurred during a connection to mysite.com:8443.
Peer reports it experienced an internal error.
(Error code: ssl_error_internal_error_alert)


What kind of certificate is it? Self-Signed? Signed by a real CA? One of
those new-fangled EV certs?

If it's an EV cert, then you need not one but /two/ intermediate certs
to be installed in your keystore and provided to the client during the
SSL handshake.


my original message was:

Hey everyone -

I'm stuck on Tomcat 5.5.26 to support a specific application. This is a Solaris 
9 server with no Apache - tomcat is handling its own webserving. We're hoping 
to upgrade the JDK. I can use JDK-1.5.0_21 successfully. When I start tomcat 
with JDK-1.6.0_16, I get one specific issue...

Firefox, but not Safari or IE, will report on https connections:

Secure Connection Error
An error occurred during a connection to mysite.com:8443.
Peer reports it experienced an internal error.
(Error code: ssl_error_internal_error_alert)

Weirdly, there is no error in any error log when this happens.

I think this might be a configuration error on my part. Here's our SSL conf 
stanza:

   Connector port=8443 maxHttpHeaderSize=8192
   maxThreads=150 minSpareThreads=25 maxSpareThreads=75
   enableLookups=false disableUploadTimeout=true
   acceptCount=100 scheme=https secure=true
   clientAuth=false sslProtocol=TLS
keystoreFile=/path/to/my/keystore
keystorePass=somePass /

... I notice that in other people's configs, they have a specific reference to 
a TrustStore. I have the CA certs imported into the keystore, though, and I'm 
using this config on other servers, with other versions of tomcat, other 
versions of the JDK, etc. (However, those are all linux servers.) I'm 
especially suspicious about this possibility because lately there have been 
other Firefox https bugs (like the Flash uploader bug) that ultimately have to 
do with verifying the certificate authority. Adding in a truststore doesn't 
seem to help, but maybe i r doin it wrong.

Thanks for any references or wild speculation you can provide.

- Nada

(p.s. if you're curious about the Flash uploader bug, see e.g.:
http://bugs.adobe.com/jira/browse/FP-201
http://bugs.adobe.com/jira/browse/FP-226
https://bugs.adobe.com/jira/browse/SDK-13196
http://swfupload.org/forum/generaldiscussion/347 ) 




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Re: java.lang.OutOfMemoryError: Java heap space


Rainer Jung wrote:

On 06.10.2009 21:44, Joe Hansen wrote:

...


It seems your application is CPU heavy. Either the data objects handled
are to heavy weight (maybe some user having huge Fotoset or Email list)
or the request rate is simply to large. Is the CPU saturated during the
problems?

I would activate a good access log and try to find out from that and
your webapp logs what maybe special about these web requests or users.


...
The original post was so long ago in relative terms, that I don't 
remember the details of your system.
But, just in case, you may want to also have a look at the *total* 
memory usage on your system during those events.
If the load has increased (even slightly) recently, it might have 
reached the point where there is sometimes no longer sufficient physical 
memory available to process all simultaneous tasks, and the system is 
starting to swap tasks to virtual memory (on disk).  That would cause a 
dramatic slowdown in request processing, which may have something to do 
with your problems.
If you are under Unix/Linux, the first lines displayed by top would 
already provide some information in that respect.
Or else, just plug in an additional memory bar in your server, and see 
if it changes anything.  They are rather cheap right now.




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Re: java.lang.OutOfMemoryError: Java heap space

I changed the session-timeout for the CAS webapp to 1 hour and
restarted Apache/Tomcat to see if that changes anything. If the issue
manifests again, I will surely check the memory and cpu usage using
the top command.

Rainer, I somewhat doubt that getAllFotosets() is causing the problem.
Because I have an administrator account on the website and I can view
more photosets than any other user. And when I login and view the
photosets nothing alarming seems to be happening. I am not ruling out
the possibility altogether though.

Andre, you are right. Memory is cheap. However, the machine has 8GB of
memory already. I am thinking that it should be sufficient. Here's the
output of the free command:
[r...@csiweb bin]# free -m
 totalused   free
Mem: 8113   7557   555
-/+ buffers/cache:861 7252
Swap:9012  33  8979

Its amazing how you and Andre are able to identify issues with others'
Tomcat installations just by looking at their logs and settings. It
speaks volumes of your experience with Tomcat.

Thank you,
Joe

On Tue, Oct 6, 2009 at 2:00 PM, Rainer Jung rainer.j...@kippdata.de wrote:
 On 06.10.2009 21:44, Joe Hansen wrote:
 Thanks for your feedback, Rainer.

 The DAO objects/methods that you've mentioned are used for almost
 every page on our website. So I am not surprised to find them in the
 thread dumps. However, as you pointed out, the parameters to these
 methods change depending on the page they are on and if the user is
 logged in or not.

 I did not check the CPU usage when the issue happened.  I just checked
 the web application logs and found that first there was an
 OutOfMemoryError, followed by MySQL errors when
 TWFotoSetListDAO.getAllFotosets tried to get a database connection.

 I am *guessing* :
 I changed the session timeout to 4 hours for the Jasig CAS
 Single-Signon web application. This stores a ton of tickets in memory.
 During a 4 hour period when there are more http requests, the 512MB of
 Java Heap space is not sufficient to store all these tickets. During
 that time OutOfMemoryError happens and all hell breaks loose
 subsequently.

 I probably should decrease the session-timeout to 1 hour or so and see
 if that changes things. Would you agree, Rainer?

 Could be. But it could also be, that getAllFotosets() is able to slurp
 in huge amounts of data to memory and that this is the reason for the OOME.

 Once you run into an OOME on heap, there's no good relief than
 restarting the whole JVM. After an OOME you can't prove the correctness
 of your app any more. Random objects might be missing, resulting in
 largely undefined behaviour in your webapp or even Tomcat.

 I'm a bit insisting on the getAllFotosets(), because I once was involved
 in troubleshooting for a social website and part of their problem was
 special users having extremely large social data. So once they hit the
 server it went OOME.

 Thanks,
 Joe

 Regards,

 Rainer


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Re: java.lang.OutOfMemoryError: Java heap space

2009-10-06 Thread Peter Crowther

2009/10/6 Joe Hansen joe.hansen...@gmail.com:
 Andre, you are right. Memory is cheap. However, the machine has 8GB of
 memory already. I am thinking that it should be sufficient.

You might wish to dedicate more of that 8 Gbyte to Java, though.  It
depends on the performance characteristics of your application - looks
to me like MySQL is grabbing a load of your RAM for its cache.  top
(or similar) would confirm that overall usage, and I assume MySQL has
some performance monitoring available that'll tell you the
effectiveness of its caches.  If you're *just* tipping into using
swap, it's almost certainly the case that MySQL is grabbing memory
that would otherwise be called free.

This may well be the best use for the RAM, but there's a possibility
that more RAM dedicated to Java would improve your performance
overall.  I'm not willing to make that guess without data on the
effectiveness of MySQL's cache, though :-).

- Peter

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Re: Re:Tomcat6.0.16 is too easily to be OutOfMemory compared with Tomcat5.5

2009-10-06 Thread kalpanab

Hi All,

I am also having the same issue. Does any one have solution for this issue?

Thanks,
Kalpana

kana-s wrote:

Thank you for replying.

-Xms and -Xmx were 256MB. I changed 512MB but the result was same.

As session in implicit object in JSP ,
if I don't set % session.invalidate();%, sessions will create.

The jsp which I used the test isn't set % session.invalidate();%.
So I thought sessions were created.
Is my thought wrong?

I did the same test as Tomcat5.5 with that jsp.
The test was completed finished atTomcat5.5 but Tomcat 6.0.16 iwasn't.
So I thougft it is strange .

Instead of Apache Bench, Next I tried the Performance Center.(one of the
load test tool)

That added 1 virtual user per 10 secs.
Only 30 virtual users, OutOfMemory was occured at Tomcat6.0.16,
but Tomcat 5.5.26 was 270 virtual users!

I want to know this behavior is defaut in Tomcat6.0 or I had a mistake
configurations.

Chuck
I put the file path to appBase and deleted errorReportValveClass.

Thanks.

--
Kanako Shimizu kan...@jb4.so-net.ne.jp

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RE: Re:Tomcat6.0.16 is too easily to be OutOfMemory compared withTomcat5.5