We are using JBoss for a project and some of our
containers we want to use with commit-option "C",
which means that we will be using one of JBoss'
Instance Per Transaction containers. The default
locking policy for the Instance Per Transaction
containers is ejb.plugins.lock.NoLock.

From our exploratory reading, we were wondering if
perhaps using the ejb.plungins.lock.MethodOnlyEJBLock
might prove to be safer in terms of concurrent access.
Does anyone have any hands-on experience with these
kinds of issues, and if so, how did you resolve them?