I have been tracking down a strange error in our app.

java.lang.IllegalStateException: There is no database snapshot available for
the object

In a lot of places we use a new EditingContext instead of the default
Editing Context for the session. When we use a new editing context we have
been very careful to lock and unlock before and after use. In some places we
use the session default EditingContext (we are probably going to stop doing
that in the future). A couple of questions come to mind:

1. I have read that it is not necessary to lock the session default
EditingContext because EOF will automanage it. What happens if it does get
manually locked? The error above was thrown when trying to do an ec.lock()
on a Session.defaultEditingContext().
2. What physically happens when an EC is locked? It seems it is some sort of
reference counter. In an earlier post Chuck mentioned that locking the
EODatabaseContext will prevent fetches/saves from occurring, what happens
when an EC is locked?
3. Is there any compelling reason to use the session default editing
context? We aren¹t using Project Wonder (yet)

Thanks in advance for any help

Dov Rosenberg
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