Re: [pgsql-advocacy] [PERFORM] Postgres VS Oracle

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walterc@xxxxxxxxxxx (Carol Walter) writes:
> I don't want to add gas to the flamewar, but I gotta ask.  What is in
> the the 90 to 95% referred to in this email.

I'd say, look at the Oracle feature set for things that it has that
PostgreSQL doesn't.

Four that come to mind:

- ORAC = multimaster replication
- Integration with hardware vendors' High Availability systems
- Full fledged table partitioning
- Windowing functions (SQL:2003 stuff, used in OLAP)

These are features Truly Needed for a relatively small percentage of
systems.  They're typically NOT needed for:

 - departmental applications that operate during office hours
 - light weight web apps that aren't challenging the limits of
   the most expensive hardware
 - any application where reliability requirements do not warrant
   spending $1M to make it more reliable
 - applications that make relatively unsophisticated use of data
   (e.g. - it's not worth the analysis to figure out a partitioning
   design, and nobody's running queries so sophisticated that they
   need windowing analytics)

I expect both of those lists are incomplete, but those are big enough
lists to, I think, justify the claim, at least in loose terms.

The most important point is that third one, I think: 
  "any application where reliability requirements do not warrant
  spending $1M to make it more reliable"

Adopting ORAC and/or other HA technologies makes it necessary to spend
a Big Pile Of Money, on hardware and the humans to administer it.

Any system whose importance is not sufficient to warrant *actually
spending* an extra $1M on improving its reliability is *certain* NOT
to benefit from either ORAC or HA, because you can't get any relevant
benefits without spending pretty big money.  Maybe the number is lower
than $1M, but I think that's the right order of magnitude.
-- 
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http://linuxdatabases.info/info/nonrdbms.html
"One disk to rule them all,  One disk to find  them. One disk to bring
them all and in the darkness grind them. In  the Land of Redmond where
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