[opencms-dev] OpenCMS hanging

Tristan Roddis tristan at roddis.org
Wed May 28 13:08:01 CEST 2003

Has nobody else ever experienced this problem? (OpenCMS hogging the port 
and refusing to shut down when told to by Tomcat)

It's now occurring with alarming regularity and will mean that we cannot 
go live as the site would not be able to stay up for more than 30 minutes 
without a manual restart!

Furthermore, it seems to be happening on Windows too (OpenCMS 4.77 with 
Tomcat 4.06 and JDK 1.4.1_02) - when it gets into such a state then no 
browser can connect (gets stuck forever in 'Connecting to site...'), and 
I cannot restart OpenCMS without manually killing the Java process.

Does anybody have any pointers and/or suggestions where to look for 
debugging info? We tried downgrading the JVM to 1.3, but ran into problems 
because a lot of the modules we wrote depend on methods from 1.4 :(

Many thanks,


On Thu, May 22, 2003 at 10:42:25AM +0000, Tristan Roddis wrote:
> Perodically, we are getting a problem where OpenCMS hangs completely - all 
> attempts by a browser to connect result in them getting stuck in the 
> 'loading page' loop forever.
> When this happens, there appear to be a whole load of Java processes 
> running (> 50), and running the Tomcat shutdown script reduces these by a 
> few. Re-running the shutdown results in the error given below, but will 
> kill off more of the processes. However, there will always be some that 
> remain (39 for the last time this happened) that just will not go away 
> until I explicitly run a kill command on the first PID in the list.
> So, what's going on? Why could one of the OpenCMS processes be hogging the
> port and then not dying when told to by Tomcat?
> Does anybody have any suggestions, or ideas for places that I could look 
> to try to work out what's going on and stop this behaviour?
> I am using OpenCMS 4.77 with Tomcat 4.06 and JDK 1.4.1_02 on Linux.
> TIA,
> -T.
> -- 
> tristan at roddis.org                              http://www.roddis.org
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tristan at roddis.org                              http://www.roddis.org
"Traffic a nightmare? You are the traffic."   http://www.sustrans.org

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