Accessing application module instances directly from the AMPool

Question

Hi!
I´m want to create an Application Module Pool Monitor, actually I need to know how many fetched rows an Application Module instance has.
I made a jsp, that do the following:
ApplicationPool pool = (ApplicationPool)poolMgr.getResourcePool(poolname);
int instanceCount = pool.getInstanceCount();
for (int i = 0; i < instanceCount; i++){       
ApplicationModule am = pool.getInstance(i);
and then works with the am instances, calculating the rows that each VO has fetched.
Now, It is not yet clear to me if, when I use "pool.getInstance(i)",
I'm locking the instance that is being use by another session (an user session), or trying to get a lock,
and possibly creating a deadlock. Or the AMPool administrates the lock and I don´t need to worry about it.
Thank in advance, and sorry for my bad english!
(i forgot to mention, I´m using adf - bc 10.1.2 )
Message was edited by:
user506477

Answer 1

Sure, we are having RAM problems, sometimes, and for reasons that are still unclear, a process begins to consume memory.
What we need rigth now, is a tool that tell us how many rows in memory has each user, and which ViewObject is creating them. The idea is to make some kind of monitor that shows that, the AM that each user has, an the state of their VOs.
I used the JSP in this page as a reference:
http://radio.weblogs.com/0118231/stories/2004/05/10/gettingApplicationModulePoolStatisticsToAidWithSizeTuning.html
I´m not trying to create a new AM management mechanism, simply a tool that shows the status of the application (and perhaps allows me, for instance, to clear the cache of a VO that has to many rows fetched).
In my JSP I obtain an instance of the AMs using "pool.getInstance(i)", and access then the associated VOs. But I don´t know if accesing the AMs this way could create problems with users that have an AM assigned to them, for example, a deadlock.
Thanks!