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what will happen if we create two userTransaction inside each other?

From: legolas wood <legolas.w_at_gmail.com>
Date: Fri, 20 Apr 2007 13:44:06 +0430

Hi
Thank you for reading my post.
what is impact and requirement of two userTransaction inside eachother?
for example we have a servlet which calls two method from two objects
it call them inside one userTransaction.
inside each method we have begging and ended some userTransaction.

My question is: what is impact of this scenario and what is its
requirement from application server side, and resources like database
and JMS and ....