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Re: ZERO Database Downtime???
- From: Mogens Nørrgaard <mln@xxxxxxxxxxxx>
- To: exriscer@xxxxxxxxx
- Date: Mon, 03 Apr 2006 17:04:10 +0200
I think by now it's safe to say that there is no rolling upgrade in Oracle.
The work involved in rewriting Oracle's source code to allow for
upgrades of the dictionary (excellent point made by another member of
the list) and/or the SGA structures would be Herculian.
Remember that in science one - one - counter example is enough to prove
something wrong. There will always be cases where rolling upgrades are
not possible in Oracle installations.
In fact, Oracle is lying about this, let's just face it. It's marketing,
they're mad if they're told that they're lying, and lots of people get
scared when marketing gets mad.
But RU's are not there. They might - might - be available in one Oracle
product: Rdb.
But I'm not even sure about that.
Mogens
LiShan Cheng wrote:
Well if you use CRS the 99.5% becomes cero no? :-)
You could have asked him how do you upgrade the data dictinary without
stopping.!
Rgds
LSC
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