Re: OT? Java application servers.

John,

The obvious difference between the app servers that you mention is that
Tomcat is not a full Java EE container, whereas the others are. (I would
see this as an advantage, since I've never been an EJB fan )

Geronimo and JBoss use Tomcat components as a base web container (but throw
the kitchen sink on top :-)

For a pretty good discussion of Java EE, see:
http://en.wikipedia.org/wiki/Java_Platform,_Enterprise_Edition
Also, you can generally add in the J2EE components that you want into Apache
Tomcat (as does Apache Geronimo), but at some point you would want to use
Geronimo (or JBOSS or Websphere).

Websphere of course extensively supports z/OS native features like WLM and
parallel sysplex and extensive connectors to other z/OS subsystems like MQ,
CICS, etc. Although not in any way light-weight (in terms of resources or
administration), you'll get one-stop shopping for support (Websphere, Java
JVM, z/OS).

I don't know of a good review comparing these containers, but even if there
were one I'm not sure what the value would be. They all have their
advantages and disadvantages which should be considered only in the context
of your requirements.

HTH,

Kirk Wolf
Dovetailed Technologies
http://dovetail.com

PS> For a very cool light-weight z/OS Java container, try our customized
Apache Tomcat package:
http://dovetail.com/products/tomcat.html




On Fri, Jun 25, 2010 at 1:12 PM, McKown, John <John.McKown@xxxxxxxxxxxxxxxxx
wrote:

An number of Java Application Servers run on z/OS as well as other system.
I know of Tomcat, Geronimo, JBOSS, and WebSphere AS. Does anybody know of
any site which does some kind of comparison of these? And, while I'm at it,
perhaps a brief overview of what makes up a Java Application Server?

John McKown
Systems Engineer IV
IT

Administrative Services Group

HealthMarkets(r)

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