Hi Chuck, Dan,
Sometimes, sharing classes across applications may become necessary
though. We have a situation where a separate application and associated
webapp classloader is launched for each site in our application. The
reason this is happening is because things have been setup differently
internally - without going into too many details. So, we ran into PermGen
exhaustion issues. Putting all the libraries in $CATALINA_HOME/common/lib"
and modifying the common classloader in catalina.properties as follows,
ensures that a single copy of the classes get loaded and shared among all
sites:
common.loader=${catalina.base}/lib,${catalina.base}/lib/*.jar,${catalina.home}/lib,${catalina.home}/lib/*.jar,${catalina.base}/common/lib/*.jar
We wanted to also put the libraries into a separate directory called
"common/" because we wanted to keep them separate from the Tomcat-native
libraries.
He may have a similar situation too; don't know.
Regards,
-Shanti
On Thu, Jan 17, 2013 at 10:58 AM, Daniel Mikusa <[email protected]> wrote:
> On Jan 17, 2013, at 10:26 AM, Caldarale, Charles R wrote:
>
> >> From: Narahari 'n' Savitha [mailto:[email protected]]
> >> Subject: Re: common vs system vs shared class loaders
> >
> >> Sorry Dan but if I do what you are suggesting I will end up in redundant
> >> jars all over the place and I dont want to do that.
> >
> > That's an issue easily handled by a deployment script. You really,
> really, really do not want to share classes across webapps.
> >
> > - Chuck
> >
>
> +1
>
> Dan
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