From the upgrades I've done, i've always done them on the same machine.
But you can do things to make life easier, one of them is to upgrade
8.0's db to 10g prior to the upgrade. It is a supported db as of 8.0
M040.
You can also run your 8.0 system off the 9.0 Aphelion. I don't have
my instructions in front of me but it is possible.
I did find the upgrade guide to be a pretty miserable guide. You had
to keep skipping forward and back in the guide instead of going from
the beginning to end.
Steve D.
Quoting "Lockwood,Mike,IRVINE,R&D" <mike.lockwood@alconlabs.com>:
> Upgrading on the same server is super risky.
>
> We upgraded to new hardware. This is the only real way to do it
> such that your source system is untouched - and allows you to return
> to it as "Plan B" in case things don't work out.
>
> The upgrade guide mixes the two fundamentally different approaches
> together at every step, with the result being that the upgrade guide
> is incredibly confusing and pretty much useless.
>
> Also, the upgrade guide tells does not address installs adequately.
> Assuming you upgrade to new hardware, on the new hardware:
>
> UPGRADE GUIDE SAYS TO (Sort of):
> - Install 8 (with Oracle 9i) + file based customizations
> - Rehost
> - Upgrade to 9 (with Oracle 10g; lots of steps)
>
> ACTUAL METHOD TO USE:
> - Install 9 (with Oracle 10g)
> - Install 8 + file based customizations
> - Rehost (to 😎
> - Upgrade to 9
>
> The upgrade guide says to install 9 on top of 8, with absolutely no
> detail. When you try to do this, the first thing that happens is
> that it says you have to uninstall Aphelion from 8 before you can
> install 9. The next step in the upgrade guide deals with Aphelion
> from 8 - which is no longer there.
>
> Can't tell you how mad we got trying to understand and use the
> upgrade guide. I think we ended up putting in over 200 tech support
> calls about upgrade.
>
>
