On Tue, Mar 22, 2016 at 9:15 AM, Thomas Kellerer <spam_eater(at)gmx(dot)net> wrote:
> Bruce Momjian schrieb am 22.03.2016 um 16:07:
>>
>> However, I do think database upgrades are easier with Oracle RAC
>
> I think you can do a rolling upgrade with a standby, but I'm not entirely sure.
I find Slony good for upgrading versions with minimal downtime,
including major version changes. It's very nature allows you to
migrate pieces and parts for testing etc, in ways that any kind of
byte streaming just can't do.