You are viewing a plain text version of this content. The canonical link for it is here.
Posted to users@tomcat.apache.org by Tomcat Novice <to...@gmail.com> on 2010/03/11 04:08:16 UTC
Tomcat 5.5 Thread Dump Questions
Hi,
I am new to Tomcat and would like ask a question regarding Thread Dumps.
My Environment all running in 1 server:
Tomcat 5.5 (running as Windows service) Total of 4 Tomcat instances load
balanced.
Windows 2003 64 bit
IIS 6.0 64 Bit
My question is, I would like to get thread dumps from the individual Tomcat
instances. I know that if I run Tomcat using command line, I should just
press Control+Esc on the CMD Window. Since its running as a service, can I
do a thread dump without stopping the current service and running the
instance on the command line?
I have seen tomcat logs folder and there are a lot of log files. Which log
file can I use/check to see the thread dumps? The environment just
implements a basic 5.5 configuration. Which logs file would be beneficial in
case I need to trobleshoot crashing instances and how do I configure them?
Regards,
Tomcat Novice
Re: Tomcat 5.5 Thread Dump Questions
Posted by Christopher Schultz <ch...@christopherschultz.net>.
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1
To whom it may concern,
On 3/12/2010 10:57 AM, Tomcat Novice wrote:
> Can anyone else offer more suggestions?
http://wiki.apache.org/tomcat/HowTo#How_do_I_obtain_a_thread_dump_of_my_running_webapp_.3F
- -chris
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.10 (MingW32)
Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org/
iEYEARECAAYFAkuapuYACgkQ9CaO5/Lv0PBMUwCdGEIaL43CZHC3mQnH31WOfnMW
NV4AnjJLsajDf9ZgupXqZN5Cw8heqgvR
=uBre
-----END PGP SIGNATURE-----
---------------------------------------------------------------------
To unsubscribe, e-mail: users-unsubscribe@tomcat.apache.org
For additional commands, e-mail: users-help@tomcat.apache.org
RE: Tomcat 5.5 Thread Dump Questions
Posted by "Caldarale, Charles R" <Ch...@unisys.com>.
> From: Tomcat Novice [mailto:tomcat.novice@gmail.com]
> Subject: Re: Tomcat 5.5 Thread Dump Questions
>
> My environment is using jdk 1.5.
The simplest thing to do is move to 1.6 (note that Sun stopped support of 1.5 some months ago, unless you want to pay for it). You can also use JConsole to extract stack dumps, or use ctrl-break to trigger one in the command window.
- Chuck
THIS COMMUNICATION MAY CONTAIN CONFIDENTIAL AND/OR OTHERWISE PROPRIETARY MATERIAL and is thus for use only by the intended recipient. If you received this in error, please contact the sender and delete the e-mail and its attachments from all computers.
---------------------------------------------------------------------
To unsubscribe, e-mail: users-unsubscribe@tomcat.apache.org
For additional commands, e-mail: users-help@tomcat.apache.org
Re: Tomcat 5.5 Thread Dump Questions
Posted by Mark Thomas <ma...@apache.org>.
On 12/03/2010 15:57, Tomcat Novice wrote:
> Can anyone else offer more suggestions? jstack is not available on windows
> that i why I could not find it. My environment is using jdk 1.5.
Java 5 is no longer being updated. It reached EOL last year. You need to
upgrade.
Mark
---------------------------------------------------------------------
To unsubscribe, e-mail: users-unsubscribe@tomcat.apache.org
For additional commands, e-mail: users-help@tomcat.apache.org
Re: Tomcat 5.5 Thread Dump Questions
Posted by Tomcat Novice <to...@gmail.com>.
Can anyone else offer more suggestions? jstack is not available on windows
that i why I could not find it. My environment is using jdk 1.5.
On Thu, Mar 11, 2010 at 10:17 PM, Caldarale, Charles R <
Chuck.Caldarale@unisys.com> wrote:
> > From: Tomcat Novice [mailto:tomcat.novice@gmail.com]
> > Subject: Re: Tomcat 5.5 Thread Dump Questions
> >
> > I cant find jstack anywhere on my tomcat or jdk instance.
>
> Then you either have a JRE installed, not a JDK, or it's very old. Use a
> JDK 6 download from java.sun.com.
>
> - Chuck
>
>
> THIS COMMUNICATION MAY CONTAIN CONFIDENTIAL AND/OR OTHERWISE PROPRIETARY
> MATERIAL and is thus for use only by the intended recipient. If you received
> this in error, please contact the sender and delete the e-mail and its
> attachments from all computers.
>
>
> ---------------------------------------------------------------------
> To unsubscribe, e-mail: users-unsubscribe@tomcat.apache.org
> For additional commands, e-mail: users-help@tomcat.apache.org
>
>
RE: Tomcat 5.5 Thread Dump Questions
Posted by "Caldarale, Charles R" <Ch...@unisys.com>.
> From: Tomcat Novice [mailto:tomcat.novice@gmail.com]
> Subject: Re: Tomcat 5.5 Thread Dump Questions
>
> I cant find jstack anywhere on my tomcat or jdk instance.
Then you either have a JRE installed, not a JDK, or it's very old. Use a JDK 6 download from java.sun.com.
- Chuck
THIS COMMUNICATION MAY CONTAIN CONFIDENTIAL AND/OR OTHERWISE PROPRIETARY MATERIAL and is thus for use only by the intended recipient. If you received this in error, please contact the sender and delete the e-mail and its attachments from all computers.
---------------------------------------------------------------------
To unsubscribe, e-mail: users-unsubscribe@tomcat.apache.org
For additional commands, e-mail: users-help@tomcat.apache.org
Re: Tomcat 5.5 Thread Dump Questions
Posted by Tomcat Novice <to...@gmail.com>.
Hi,
Thank you for your suggestion but I cant find jstack anywhere on my tomcat
or jdk instance. Any other solution available?
On Thu, Mar 11, 2010 at 11:26 AM, Caldarale, Charles R <
Chuck.Caldarale@unisys.com> wrote:
> > From: Tomcat Novice [mailto:tomcat.novice@gmail.com]
> > Subject: Tomcat 5.5 Thread Dump Questions
> >
> > I would like to get thread dumps from the individual
> > Tomcat instances.
>
> Use the jstack tool from the JDK to create the thread dumps and you can
> redirect the output wherever you want. You can find the pid numbers for
> each Tomcat from Task Manager. You may need to run jstack under the same
> account that the Tomcat services are running under (this varies depending on
> Windows version and possibly patches).
>
> - Chuck
>
>
> THIS COMMUNICATION MAY CONTAIN CONFIDENTIAL AND/OR OTHERWISE PROPRIETARY
> MATERIAL and is thus for use only by the intended recipient. If you received
> this in error, please contact the sender and delete the e-mail and its
> attachments from all computers.
>
>
> ---------------------------------------------------------------------
> To unsubscribe, e-mail: users-unsubscribe@tomcat.apache.org
> For additional commands, e-mail: users-help@tomcat.apache.org
>
>
RE: Tomcat 5.5 Thread Dump Questions
Posted by "Caldarale, Charles R" <Ch...@unisys.com>.
> From: Tomcat Novice [mailto:tomcat.novice@gmail.com]
> Subject: Tomcat 5.5 Thread Dump Questions
>
> I would like to get thread dumps from the individual
> Tomcat instances.
Use the jstack tool from the JDK to create the thread dumps and you can redirect the output wherever you want. You can find the pid numbers for each Tomcat from Task Manager. You may need to run jstack under the same account that the Tomcat services are running under (this varies depending on Windows version and possibly patches).
- Chuck
THIS COMMUNICATION MAY CONTAIN CONFIDENTIAL AND/OR OTHERWISE PROPRIETARY MATERIAL and is thus for use only by the intended recipient. If you received this in error, please contact the sender and delete the e-mail and its attachments from all computers.
---------------------------------------------------------------------
To unsubscribe, e-mail: users-unsubscribe@tomcat.apache.org
For additional commands, e-mail: users-help@tomcat.apache.org