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From: Martin Gainty <mgainty@hotmail.com>
To: Tomcat Users List <users@tomcat.apache.org>
Subject: RE: JVM per Context
Date: Wed, 10 Sep 2008 20:13:30 -0400
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Mike<BR>

If your goal is to run TC with different JVMs have you looked at using each=
 JBM to run embedded Tomcat<BR>
http://www.onjava.com/pub/a/onjava/2002/04/03/tomcat.html?page=3D1<BR>

?<BR>
Martin<BR>=20
______________________________________________ <BR>
Disclaimer and confidentiality note=20
Everything in this e-mail and any attachments relates to the official busin=
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=20


> Date: Thu=2C 11 Sep 2008 00:56:42 +0100
> From: p@pidster.com
> To: users@tomcat.apache.org
> Subject: Re: JVM per Context
>=20
> Michael Dehmlow wrote:
> > Thanks=2C my version of tomcat 5.5.26. My mistake I was looking at tomc=
at 3.3
> > documentation:
> > http://tomcat.apache.org/tomcat-3.3-doc/tomcat-apache-howto.html
> > http://tomcat.apache.org/tomcat-3.3-doc/tomcat-apache-howto.html .
> >=20
> > Yes defining contexts in the Server.xml is discouraged but I'm doing it
> > anyway. =3B)
>=20
> Strongly suggested.
>=20
> > For those in a similar situation I'm going down the path of defining an
> > engine per context:
>=20
> Still won't give you separate JVMs.
>=20
> As Peter and Chuck indicated=2C you'll need to create separate Tomcat
> instances if you want to have separate JVMs.  When you start Tomcat you
> are calling Java's JVM first=2C then Tomcat runs inside of it.
>=20
> If you want another JVM instance you have to start another completely
> external process.  The JVMs don't run inside Tomcat=2C it's the other way
> round.
>=20
>=20
> >     <Engine name=3D"engA" defaultHost=3D"localhost" jvmRoute=3D"jvmA">
> >       <Host name=3D"localhost" appBase=3D"webapps"
> >        unpackWARs=3D"true"
> >        xmlValidation=3D"false" xmlNamespaceAware=3D"false">
> > 		<Context path=3D"/eclipse/A"     docBase=3D"/slot_A" cookies=3D'false=
'>
> > 		    <Parameter name=3D"com.dev.myParm" value=3D"/eclipse/A" override=
=3D"true"/>
> > 		</Context>
> >       </Host>
> >     </Engine>
> >=20
> > Using jvmRoute the idea is to use the clustering mechanism of tomcat to=
 give
> > me multiple jvms....
>=20
> I think you're mistaking jvmRoute for something it isn't.
>=20
> This attribute is used to add a marker to the jsessionid so that routing
>  devices in front of a cluster of Tomcat servers can determine which
> server to send a sticky session to.
>=20
>  http://tomcat.apache.org/tomcat-5.5-doc/config/engine.html
>=20
>=20
> > This being only my theory I can only hope someone can either call me an
> > idiot or give me a few pointers in short order.
>=20
>  http://tomcat.apache.org/tomcat-5.5-doc/
>=20
>=20
> p
>=20
>=20
>=20
> > I will post my findings as I find them.
> > Thanks=2C=20
> > Mike
>=20
>=20
> ---------------------------------------------------------------------
> To start a new topic=2C e-mail: users@tomcat.apache.org
> To unsubscribe=2C e-mail: users-unsubscribe@tomcat.apache.org
> For additional commands=2C e-mail: users-help@tomcat.apache.org
>=20

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