RE: MVC Architecture and transactions

["Joe Pluta" <joepluta@xxxxxxxxxxxxxxxxx>]

> From: Walden H. Leverich
>
> However, I do have to disagree with your performance comment. Does
> journaling add overhead? Sure. Does it add significant overhead? Not
> really. Are there statistical outlayers? Sure, by the vast majority of
> installations will see no significant difference between journaled and
> non-journaled updates.

I wasn't complaining so much about performance (although I don't like ANY
unnecessary performance hits, because they add up), but about the additional
disk space and even more the management required to handle the journal
receivers.  Neither of these is a good thing: extra disk space on a System i
is never cheap, and managing journals can really be a pain.

And if you do all of this to be able to gracefully restore after a system
bus outage, then I question the ROI.  And that should be the final decision
point, as it is with any insurance policy: is the expense worth the
coverage?

Joe