I've an java application running under tomcat and in the last week
memory usage increase 50%, from 200M to 400M. I want to know exactly
why this happens. Some suggestion?
Thanks a lot
-
To start a new topic, e-mail:
Try Lambda Probe as recommended by other contributors to this list.
http://www.lambdaprobe.org/d/index.htm
I'm no expert with this tool but it's straightforward to install and I
think it may help you out a bit. The System Information/Memory
Utilization thing is particularly fascinating although
Hi, Everyone,
Where could I find the document of how to write a custom realm?
Many Thanks!
zhu
The nature of OOMEs is, that they can happen in every part of the code,
that needs a new peace of memory. No one is able to write code in a way,
that can handle memory allocation failures in all places new memory is
needed.
If you run into an OOME, it is very unwise to let the JVM run along,
Folks,
Apologies, this is not strictly a tomcat question but I wonder if anyone else has run into it and
has a solution. My app spawns another window to display help, via the window.open() javascript call.
The new window does not share the same session as the original, the session ID
is
Hi,
I was trying out the host-manager last night and wanted to confirm
what I was seeing is expected behaviour.
I created a new virtual host and deployed a war to it. All when OK and
when using the test.domain.com url I could access the war deployed to
the virtual host.
But after I restarted
hi there,
i have problem with tomcat5.5
When i want to install webbyfiles project in using jsp page (install.jsp), i
have an error.
[unixODBC][Driver Manager]Data source name not found, and no default driver
specified
but if i do this:
$isql Default
that's works
I think it's a problem of
Hi ,
On starting my tomcat 6, it says
INFO: The Apache Tomcat Native library which allows optimal performance in
production environments was not found on the java.library.path:
This is my full startup log.
[EMAIL PROTECTED]:~# pkill -9 java
[EMAIL PROTECTED]:~# catalina run
Using CATALINA_BASE: /usr/local/bin/apache-tomcat-6.0.13
Using CATALINA_HOME: /usr/local/bin/apache-tomcat-6.0.13
Using CATALINA_TMPDIR: /usr/local/bin/apache-tomcat-6.0.13/temp
Using JRE_HOME:
When starting a new thread (ie sending a message to the list about a
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makes your new message
Hi, Andrei!
You may consider looking at existing mock implementations of
HttpServletRequest/Response that are available.
For example, Spring Framework (http://springframework.org) has
org.springframework.mock.web.MockHttpServletRequest,
org.springframework.mock.web.MockHttpServletResponse
Those
What is this.
I am getting an outofmemory error on running QuartzScheduler. Does this has
anything to do with that?
No, Apache Tomcat Native library is not related to your out-of-memory
errors. You may note,
that the message shows even if you do not have your webapp deployed.
From: Adam Lipscombe [mailto:[EMAIL PROTECTED]
My app spawns another window to display
help, via the window.open() javascript call.
The new window does not share the same session as the
original, the session ID is always different.
Occasionally the ID of the new window is that of a
From: Bill Clarke-Fields [mailto:[EMAIL PROTECTED]
If it turns out to be so, is there
anything I can do to force it to not page out the JVM heap?
There's cheap and there's messy :-).
The cheap way: Set up a job that runs overnight that exercises your app.
It should keep the critical files
Sorry. My mistake
Mark Thomas wrote:
When starting a new thread (ie sending a message to the list about a
new topic) please do not reply to an existing message and change the
subject line. This is known as thread hijacking and to many of the
list archiving services and mail clients used by list
Ok, right.
I want to fix this. Looks like it has something to do with tomcat
performance as such.
On 10/10/07, Konstantin Kolinko [EMAIL PROTECTED] wrote:
What is this.
I am getting an outofmemory error on running QuartzScheduler. Does this
has
anything to do with that?
No, Apache
Yes, if you mean enabling the file server/lib/servlets-cgi.jar...
-Original Message-
Date: Mon Oct 09 18:25:12 EDT 2000
From: Martin Gainty [EMAIL PROTECTED]
Subject: Re: Perl Permissions on Tomcat
To: Tomcat Users List users@tomcat.apache.org
I asked yesterday but didnt hear
I assume it's a permission problem since:
1) I'm trying to run script A (the script with the problem), and
2) script B ran with no problems at all, but
3) script A also ran with no problems if executed from the command line
directly instead of in the browser via Tomcat server...
both scripts A
Hi,
I have a problem concerning the classloader tomcat is using, When I try
to load a class dynamically, which is located witihn a jar-archive
under /WEB-INF/lib with class.forName(full_class_name), an exception
is thrown. If the class is located at WEB-INF/classes, everything works
fine.
As
Could you post more info -- e.g. tomcat version, jvm version, class
package and name you are trying to load, any relevant stack traces in
the logs, etc., ...
--David
Albert Greinoecker wrote:
Hi,
I have a problem concerning the classloader tomcat is using, When I try
to load a class
Naveen,
First you need to download the Tomcat. Then you need to extract it on
the directory you wish to install it.
Then you will need to configure some configuration files, like
Server.xml, Tomcat-Users.xml and so on.
If you go to the Tomcat WebPage, you will find many documentation on
how to
From: Arun [mailto:[EMAIL PROTECTED]
Subject: Native Library Not found
INFO: The Apache Tomcat Native library which allows optimal
performance in production environments was not found on the
java.library.path:
That's just an informational message indicating that APR is not
installed.
Could some body let me know how to go about setting upa Tomcat instance
on linux
I am running it on an unbunt machine. I do not get the OutOfMemory error on
my development machine which is Windows. I think as somebody else has said
that a profiler is a good way to start with.
I am running my tomcat from a putty. Can you give me an idea of which
profiler I can use.
Will the
I'm sorry I just found out that the cause of the failure described below
lies one step before the class.forName-statement.
Before I'm trying to load the classes with
ClassLoader cld [...]
URL resource = cld.getResource('path/to/the/class/file.class');
so it's clear to me that this cannot work
Hi AlbertWhich classloader you want depends on where you loaded your jarTake a
look at
http://tomcat.apache.org/tomcat-5.5-doc/class-loader-howto.html
HTH/Martin Gainty__Disclaimer and
confidentiality noteEverything in this e-mail and any
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Barry,
Propes, Barry L wrote:
is the bottom line that he (Semen's) wanting certain areas protected
by a role, and other areas protected/accessible only by another role?
Sounds like he wants user-level authorization, which Tomcat just doesn't
do.
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Peter,
Peter Crowther wrote:
The messy way: Run Tomcat as an admin (ick!) and make a JNI call to
some native code that pins Tomcat's address space into RAM.
Messy indeed.
I have not tried this, don't know whether there's a correct JVM way
of
Can you post the actual relevant lines of code? Also, I suspect for
classes, Class.forName() is enough -- no need to find the class first w/
Classloader.getResource( ... ).
--David
Albert Greinoecker wrote:
I'm sorry I just found out that the cause of the failure described below
lies one
What happens if I put different jar versions of same classes on WEB-INF/lib?
Example:
project.jar (new version)
project_old.jar (old version)
Tomcat load and use both? Could Tomcat be confused with this situation?
Thanks a lot
Why does my container thread gets shutdown.Is there anyway I can stop that.
I tried using the profiler webapp(Lamda Probe). But Since the container
shuts down I am not able to use that.
On 10/10/07, Caldarale, Charles R [EMAIL PROTECTED] wrote:
From: Arun [mailto:[EMAIL PROTECTED]
Subject:
From: Christopher Schultz [mailto:[EMAIL PROTECTED]
My experience with JNI is that you have to pin objects one at a time.
To be clear: I wasn't talking about pinning Java objects to particular
addresses in memory, instead pinning the entire process address space
into memory using Win32 API
From: Christopher Schultz [mailto:[EMAIL PROTECTED]
Subject: Re: Very Long Full GC after Inactivity
My experience with JNI is that you have to pin objects one at a time.
Peter's not talking about the JNI pin function, which only prevents
objects from moving around in the JVM heap, not in
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Zhu,
quanxin zhu wrote:
Where could I find the document of how to write a custom realm?
Realm is just an interface:
http://tomcat.apache.org/tomcat-5.5-doc/catalina/docs/api/org/apache/catalina/Realm.html
Fortunately, there's a RealmBase class
From: Andrew Hole [mailto:[EMAIL PROTECTED]
What happens if I put different jar versions of same classes
on WEB-INF/lib?
Example:
project.jar (new version)
project_old.jar (old version)
Tomcat load and use both? Could Tomcat be confused with this
situation?
Each time a class is
It uses the first version of the class it finds when findClass is
called. First version depends on which jar it looks in first. There is
no defined order in which jars should be read first. So the behavior of
Tomcat would be like any other java application - unknown.
-Tim
Andrew Hole wrote:
The question is better
what happen if you have 2 classes with same name and package in the
same classloader?
Knowing which of both classes will be indeed loaded and used when need
is undetermined. Only one of those classes will be used, but it there is
no rule as to which will be used. This is
From: Andrew Hole [mailto:[EMAIL PROTECTED]
Subject: Different jar version
What happens if I put different jar versions of same classes
on WEB-INF/lib?
Really Bad Things.
Could Tomcat be confused with this situation?
Yes, as is the person who did such a thing.
Depending on the order
Hello ArunConfirm your environment is identical between 2Ubuntu has same
jvm/jre, same JAVA_OPTS, same RAM as dev boxTake a look at Jprobe that chuck
suggested earlier to determine which class/method is consuming memory without
release
Hi,
How do I run Tomcat as a non-root user? I need to be able to bind to
ports 80 443 which are privileged ports. I know that with straight
Apache the user that it runs as is configured in httpd.conf. It starts
up as root, binds to the ports and then drops its privileges. However,
I'm
I'm getting OutofMemoryError ... Could have some relationship having
two different versions of jar and memory leak?
Thanks
On 10/10/07, Caldarale, Charles R [EMAIL PROTECTED] wrote:
From: Andrew Hole [mailto:[EMAIL PROTECTED]
Subject: Different jar version
What happens if I put different
fsdfs
-Original Message-
From: Martin Gainty [mailto:[EMAIL PROTECTED]
Sent: 2007年10月10日 23:12
To: Tomcat Users List
Subject: RE: Native Library Not found
Hello ArunConfirm your environment is identical between 2Ubuntu has same
jvm/jre, same JAVA_OPTS, same RAM as dev boxTake a look at
I did try this, but it didn't have an effect.
I did notice that reads would timeout, but not writes.
We were already using the default value of 6 (60 secs), but our
problem is around the 15 minute mark (of writing).
-Mike
-Original Message-
From: Roark, Mike
Look there:
http://wiki.apache.org/tomcat/HowTo#head-18d1c3f3fa702a1be769340784515eecce6e0ac9
.
- Alexey.
Rob Tanner wrote:
Hi,
How do I run Tomcat as a non-root user? I need to be able to bind to
ports 80 443 which are privileged ports. I know that with straight
Apache the user that
Running tomcat 5.5.15 on Sun JRE 1.5.0_12
I have a situation where a java.util.timer object scheduled to run once
per day (by using .scheduleAtFixedRate) is firing two times at once, and
it's driving me crazy trying to figure out why. The code excerpts below
are my current attempt, but I
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Andrew,
Andrew Hole wrote:
I'm getting OutofMemoryError ... Could have some relationship having
two different versions of jar and memory leak?
It's very unlikely. As other posters have said, either one class gets
loaded or the other one does, not
Rob Tanner schrieb:
How do I run Tomcat as a non-root user? I need to be able to bind to
ports 80 443 which are privileged ports. I know that with straight
Apache the user that it runs as is configured in httpd.conf. It starts
up as root, binds to the ports and then drops its
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Rob,
Rob Tanner wrote:
How do I run Tomcat as a non-root user? I need to be able to bind to
ports 80 443 which are privileged ports. I know that with straight
Apache the user that it runs as is configured in httpd.conf. It starts
up as root,
Hi,
I finally found out what the problem was. There is nothing stored in the
session (I tried the SessionListener from tomcat 5.5.25 in my tomcat
version, it worked - I saw contextInitialized entries in the standard
context log) but I never saw any sessioncreated - nor destroyed - event. By
From: Andrew Hole [mailto:[EMAIL PROTECTED]
Subject: Re: Different jar version
I'm getting OutofMemoryError ... Could have some relationship having
two different versions of jar and memory leak?
Not likely, but it really depends on how your classes interact.
Instead of indulging in rather
From: Arun [mailto:[EMAIL PROTECTED]
Subject: Re: Native Library Not found
Why does my container thread gets shutdown.
Because it ran out of memory - that should be obvious.
Is there anyway I can stop that.
Fix your memory leak.
I tried using the profiler webapp(Lamda Probe).
Lambda
From: David kerber [mailto:[EMAIL PROTECTED]
Subject: java.util.timer firing twice
I have a situation where a java.util.timer object scheduled
to run once per day (by using .scheduleAtFixedRate) is firing
two times at once
Any chance your webapp has actually been deployed twice, causing
Ok,
Help!! I do not have an OutOfMemory erro when running tomcat from myeclipse.
I am running JDK1.5 and tomcat6.
But in my ubuntu I have jdk1.6 and tomcat6.0 and I have an OutOfMemory
problem why?
When the server starts up itself the contianer shuts down and logs the
OutOfMemory error.
But why
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Arun,
Arun wrote:
Ok,
Help!! I do not have an OutOfMemory erro when running tomcat from myeclipse.
I am running JDK1.5 and tomcat6.
But in my ubuntu I have jdk1.6 and tomcat6.0 and I have an OutOfMemory
problem why?
Compare your memory
From: David kerber [mailto:[EMAIL PROTECTED]
Subject: Re: java.util.timer firing twice
Now to come up with a workaround; I should be able to just
check to see which context the timer is running under in
the, and bail out if it's not the one I want, shouldn't I?
Why don't you fix the real
Roark, Mike wrote:
I did try this, but it didn't have an effect.
I did notice that reads would timeout, but not writes.
We were already using the default value of 6 (60 secs), but our
if you are using defaults, then you are not using the correct settings,
|disableUploadTimeout defaults
That's got to be it; I have the app deployed (intentionally) both at its
own context root, and as the ROOT context. It never crossed my mind
that that would screw up my timers, though it certainly should have.
Now to come up with a workaround; I should be able to just check to see
which
Chris,
I do not have any additional memory add ons on JAVA_OPTS on both sides.
My Quartz scheduler is a spring bean and works from inside the weapp on both
sides.
My app starts and works well in myeclipse' tomcat. I have given the start
logs, at the beginning of the mail. Will put here once
Chris,
Let me try installing Jdk1.5 and make same version on both sides. But I need
to use jdk1.6 as I need some of the features.
On 10/10/07, Christopher Schultz [EMAIL PROTECTED] wrote:
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Arun,
Arun wrote:
Ok,
Help!! I do not have an
From: Arun [mailto:[EMAIL PROTECTED]
Subject: Re: Native Library Not found
*Exception in thread DefaultQuartzScheduler_Worker-1
java.lang.OutOfMemoryError: PermGen space
To quote from the Tomcat FAQ (http://tomcat.apache.org/faq/memory.html):
If you have a lot of servlets or JSP's, you
Hi there,
I used to be able to create context using Admin application by inputing the full
path information in the docBase, and save and commit changes if I want this
to survive server restart in Tomcat 5.5.15.
However, I couldn't do the the same thing in my new tomcat server instance of
5.5.25,
We've been experiencing horrendous OOMEs recently after deploying 40 clones
of a vendor's .war file which encompasses their application/portal. The
context is about 100MB
Our customized piece of the puzzle is quite small. We place the jTDS jar
for a quick database connection tha'ts made to
You can take a look at Tomcat's own realms in
http://svn.apache.org/viewvc/tomcat/container/tc5.5.x/catalina/src/share/org/apache/catalina/authenticator/
Also, take a look at my AccountLockoutDatasourceRealm at
From: A C [mailto:[EMAIL PROTECTED]
Subject: placing jars in /server/lib - can cause oome?
We've been experiencing horrendous OOMEs recently after
deploying 40 clones of a vendor's .war file which encompasses their
application/portal.
You're a tad short on specifics: Tomcat version,
See my localmachine's tomcat logs
INFO: JK: ajp13 listening on /0.0.0.0:8009
Oct 10, 2007 10:39:06 PM org.apache.jk.server.JkMain start
INFO: Jk running ID=0 time=0/60 config=null
Oct 10, 2007 10:39:06 PM org.apache.catalina.startup.Catalina start
INFO: Server startup in 31934 ms
Hibernate:
Marcus,
I downloaded it and also applied the patch to eliminate the Cannot
execute JSVC executor process error. But here's the catch, and maybe
you know the answer. The machine and the OS (Fedora) are 64bit but the
Java runtime is 32bit. In order for jsvc to make use of the shared
libs,
Rob Tanner wrote:
I downloaded it and also applied the patch to eliminate the Cannot
execute JSVC executor process error.
Why didn't you use the sources you already had?
But here's the catch, and maybe
you know the answer. The machine and the OS (Fedora) are 64bit but the
Java
Christopher Schultz wrote:
A C,
A C wrote:
We've been experiencing horrendous OOMEs recently after deploying 40 clones
of a vendor's .war file which encompasses their application/portal. The
context is about 100MB
Lesee... 100 MB times 40 instances .. mm... carry the 7 ... hey, that's
Li Ye Chen wrote:
Apparently, it may also be a speed issue, since there was once when I ran
script A and after a while, I stopped the transmission -- there was actually
a partial output from the script.
How long does script A take to run?
Mark
send the following files (send as attachments) to me
offline1)/WEB-INF/applicationContext.xml2)any files that are imported by
applicationContext.xml3)any files that are imported from each of the imported
files from step 24)the value clause for the configLocation property for
hibernate.cfg.xml
Marcus,
I was able to resolve the make by doing the last compile step manually.
As far as why a 32 bit JVM or a 64 bit machine, that only applies to my
development system (which is my desktop). Our production servers are 32
bit systems. The problem with a 64 bit JVM on my development box
java.lang.OutOfMemoryError: PermGen space
just increase your permgen size
-XX:MaxPermSize=256m
Filip
Arun wrote:
Nope no use. Same error on JDk1.5
INFO: Server startup in 39569 ms
Oct 10, 2007 11:05:31 PM
org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler process
SEVERE: Error
With any luck - this will be accurate enough:
http://www.jroller.com/funkman/entry/howto_create_a_realm_in
-Tim
On Wednesday 10 October 2007, quanxin zhu wrote:
Hi, Everyone,
Where could I find the document of how to write a custom realm?
plug in a profiler,
I use www.yourkit.com, you can get memory stats, like the ones you wish
for, live.
other profilers will do the job as well
Filip
Andrew Hole wrote:
I've an java application running under tomcat and in the last week
memory usage increase 50%, from 200M to 400M. I want to
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