I am facing a very similar problem here. I use Quartz/Spring to jump
start some background processing threads within Tomcat, and I get two
threads [Quartz_Scheduler_Worker_?] running the same class in the
background (when there should only be one thread).

It should be somewhat related to Engine/Host config, because I've
configured the two Hosts but only one has the database connectors, and
in my logs one thread runs fine to completion, while the other fails
to find the database, and spams horribly.

Can anyone let me know where my error is, or what I am doing wrong in
my configuration? The link to the discussion for his solution doesn't
seem to suit my configuration.

I run two hosts: www.server.com/ runs application /opt/tomcat5/webapps/ROOT.war
and specialapp.server.com/ runs application /opt/tomcat5/webapps2/specialapp.war

Below server.xml snippet:
<Engine name="Catalina" defaultHost="localhost">
        <Host name="specialapp.server.com" appBase="/opt/tomcat5/webapps2"
        unpackWARs="true" autoDeploy="true"
        xmlValidation="false" xmlNamespaceAware="false">
        <Context path="" docBase="specialapp" debug="0" reloadable="true"/>
                <Logger className="org.apache.catalina.logger.FileLogger"
prefix="specialapp." suffix=".txt" timestamp="true"/>
        </Host>
        
        <Host name="server.com" appBase="/opt/tomcat5/webapps"
        unpackWARs="true" autoDeploy="true"
        xmlValidation="false" xmlNamespaceAware="false">
        <Alias>www.hyperspace.com</Alias>
        <Context path="" docBase="ROOT" debug="0" reloadable="true"/>
                <Logger className="org.apache.catalina.logger.FileLogger"
prefix="server." suffix=".txt" timestamp="true"/>
                  </Host>
                </Engine>
  </Service>
</Server>



> ----- Original Message -----
> From: "Antti Ollilainen" <[EMAIL PROTECTED]>
> To: "Tomcat Users List" <users@tomcat.apache.org>
> Sent: Wednesday, February 22, 2006 2:23 PM
> Subject: Re: Multiple services in single Tomcat instance
>
>
> Hi,
>
> Here is a link to the archived discussion which helped me to configure the
> services up and running:
> http://marc.theaimsgroup.com/?l=tomcat-user&m=111411822627845&w=2
>
> On 2/21/06, Biernesser, Beth <[EMAIL PROTECTED]> wrote:
> >
> > I am also interested in this issue ... I am setting up the same
> > situation.  If anyone has information, could they also include me in the
> > reply?  Thanks so much!
> >
> > -----Original Message-----
> > From: Antti Ollilainen [mailto:[EMAIL PROTECTED]
> > Sent: Tuesday, February 21, 2006 10:24 AM
> > To: users@tomcat.apache.org
> > Subject: Multiple services in single Tomcat instance
> >
> > Hello,
> >
> > I'm configuring a single Tomcat instance to serve two separate web
> > applications. The applications are on separate ports and one is accessed
> > over HTTP while the other one over HTTPS. I managed to get the webapps
> > configured so that each is its own Service in the server.xml. Actually
> > there was a discussion about this in last April with the same subject
> > and I got the tip to use the same name for Engine and Host inside the
> > Service.
> >
> > However, I have another problem now: When I start the server, both web
> > applications seem to start twice. It seems that all application threads
> > which are initially started are duplicated because both applications log
> > twice their startup info. I'm using log4j for logging and it seems that
> > the log lines are not simply duplicated but they originate from separate
> > threads.
> >
> > Has anyone experience from this kind of configuration or encountered the
> > same problem?
> >
> >
> >
> > ---------------------------------------------------------------------
> > To unsubscribe, e-mail: [EMAIL PROTECTED]
> > For additional commands, e-mail: [EMAIL PROTECTED]
> >
> >
>
>
> --
> Apa.
>
>

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