Admin_client.jar 10.1.3.1.0 and changing JVM settings for OC4J in opmn.xml

Just now briefly looked at admin_client.jar 10.1.3.1.0. It appears that there is new functionality to create/alter and interrogate (J2EE) resources in this utility. This partially answers my other question, as stated in Jython support in Oracle Application Server 10g R3 (10.1.3)
(Would be nice to get a definitive answer on scripting though)
Anyway...
As a follow-up question. Will there also be functionality (or is there already functionality) which lets me change JVM settings of OC4J components as they are declared in the opmn.xml, using only command line (and/or scripting) tools?
Thanks

Jan -- there is no out of the box command line utility that can amend the JVM settings for an OC4J instance.
As Deepak alluded to, it is possible to do this using JMX because all the OPMN configuration elements are all reachable from JMX. This means you can create whatever Java JMX client you desire to modify the settings, or use a scripting environment which provides nice support for JMX (for example Groovy with its GroovyMBean) to access and use the OpmnConfig MBean set to change the OPMN configuration values.
Asanka -- the 10.1.3.1 release has lots of capability in ASC to manage the OPMN settings from a browser -- including modifying all the JVM settings (things like heap, System properties, etc.) as well as OC4J switches (-userThreads, etc.)
cheers
-steve-

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