Hi,
Unfortunately I'm gonig to add the negative view, like several others
have...
True 24x7x365 (good pick-up Pete on the 7 year thing) will be limited by
much more than database and operating system availability. We just did a
major software upgrade last weekend and part of the upgrade involved the
conversion of 250+ million records in the database - that takes time no
matter what. Yes, with unlimited budget and time constraints we could get
the outage down to nothing but at the end of the day it's easier for the
business to manage an outage.
Our system was offline for a total of about 10 hours yet traffic drives on
our tollroad all the time so: The roadside is designed to backlog
transactions for several days, our system has capacity to catch up backlogs
fairly fast (within a day we had caught up again), we have an alternative
front-end system that can backlog feeds, and finally we designed our
conversion process to do as much as possible before the outage.
We are also on 8.1.7 enterprise and don't use OPS/RAC - instead we have the
alternative processes in place to ensure the business can function.
Perhaps your company can consider a similar alternative? As others have
said - it can be VERY difficult to remove every possible outage and it can
be much easier to manage a small outage every few months.
Regards,
Mark.
"Tracy Rahmlow"
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Sent by: Subject: 24 x 7 x 365
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11/12/2003 03:44
Please respond to
ORACLE-L
Hello,
Our company would like to know whether or not Oracle supports true 24x7x365
availability for an oltp database. We currently are using the 8.1.7
enterprise edition. Does an architecture exist whereby we can upgrade the
database and/or operating system and not cause an outage? Will RAC solve
this issue? Are there any other areas of concerns that I should be
thinking about? For example, analyzing with the validate clause and its
impacts on the transaction system. Thanks
American Express made the following
annotations on 12/10/2003 09:41:15 AM
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