>>> One problem with ripping out zope.rdb.interfaces.DatabaseException is
>>> backwards compatibility and deprecation. I can't think of any sane way
>>> to do that.
>> Right, so possibly first step should be to at last let Retry
>> and ConflictError errors propagate.
> I have no objections to your patch, I just thought I would suggest
> another way.
I've submitted bugs to the collector:
https://bugs.launchpad.net/zope3/+bug/111845 (retry and views)
Zope3-dev mailing list