OEM in Linux and Unix Memory difference on Deployed OC4J Container

Question

I have 2 Oracle 9iAS environments 1 each for production and test.
My Prod servers are on AIX (Unix)
My Test server is on Linux
Under Enterprise Manager If I create an OC4J container exactly the same in both and deploy an application exactly the same in both could someone tell me why the memory usage display is widely different - on linux its much more used than on unix?
Perplexing.

Answer 1

The code gets pretty messy as I have both a SendMail and MailMessage class that I use. Basically for not authenticated messages (I need authenticated), the example on metalink Doc ID: Note:234490.1 with subject "Mail Service Setup" is what I used to get this going.
I updated the local application.xml file located in C:\jdev1012\jdev\system10.1.2.2.0.1929\oc4j-config\application.xml
<mail-session location="mail/mailsession" smtp-host="my.mail.server">
<property name="mail.transport.protocol" value="smtp"/>
</mail-session>
On a datapage, I have a button with event_Email. In the action class I have an onEmail() method that calls the code to create a message and send it with the email transport.
In my libraries in JDeveloper, I created one called JavaMail which has activation.jar and mail.jar. This is added to the project.
Everything works fine when running locally. The problem is in deployment. The OC4J container that I deploy to has a java2.policy file. At first the classpath, and the location in the policy file for mail.jar and activate.jar were not the same. I updated the policy file to use the files in the classpath. Since mail.jar and activate.jar on the OAS server are in the classpath, I didn't include these files in the deployment.
When trying to run, I don't get any messages, just a 500 Error.
If I try to implement a policy file on the local OC4J in JDeveloper, I get lots of problems, and I gave up on that route.
Hope that adds more info. Thanks, Ken