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Comparison of DB2 and Oracle?

One of my friends, Scott, is a consultant who doesn't currently have
newsgroup access so I am asking these questions for him. I'll be telling him
how to monitor the answers via Google Newsgroup searches.

Scott has heard a lot of hype about DB2 and Oracle and is trying to
understand the pros and cons of each product. I'm quite familiar with DB2
but have never used Oracle so I can't make any meaningful comparisons for
him. He does not have a lot of database background but sometimes has to
choose or recommend a database to his clients.

Scott has enough life-experience to take the marketing information produced
by IBM and Oracle with a grain of salt and would like to hear from real
DBAs, especially ones who are fluent with both products, for their views on
two questions:

1. What are the pros and cons of the current releases of DB2 and Oracle?

2. What other sources of *independent* information are available to help
someone new to databases choose between DB2 and Oracle?

This is *not* a troll and we don't want to start a flame war! Scott just
want some honest facts to help him decide which product is best at which
jobs.

--
Rhino
Jul 19 '05
125 15534
> $400 is less than we spend in a week for free softdrinks for our
employees. Get a life.


see a dentist !
Jul 19 '05 #121
Why Oracle and not DB2? There are numerous sound technical reasons.

And this..

==
/home/billy/> sqlplus dataware@whs
SQL*Plus: Release 9.2.0.5.0 - Production on Mon Nov 15 15:27:06 2004
Copyright (c) 1982, 2002, Oracle Corporation. All rights reserved.
Enter password:

Connected to:
Oracle9i Enterprise Edition Release 9.2.0.4.0 - 64bit Production
With the Partitioning, Oracle Label Security, OLAP and Oracle Data
Mining options
JServer Release 9.2.0.4.0 - Production

SQL> set timing on
SQL> select count(*) from x25_calls;

COUNT(*)
----------
672839836

Elapsed: 00:00:35.18

SQL> exit
Disconnected from Oracle9i Enterprise Edition Release 9.2.0.4.0 -
64bit Production
With the Partitioning, Oracle Label Security, OLAP and Oracle Data
Mining options
JServer Release 9.2.0.4.0 - Production
==

Now anyone that have an idea what databases are about, will know what
a SELECT COUNT entails, I/O wise.. and how critical table and index
designs plays in optimising access and lowering I/O.

Can any other database, Open Source or commercial, come anywhere close
to this? I doubt it.

And no, this nothing to do with hardware. The above was run against an
old K-class HP-UX platform.

--
Billy
Jul 19 '05 #122
what a dork...

Pete H
vs****@onwe.co. za (Billy Verreynne) wrote in message news:<1a******* *************** ****@posting.go ogle.com>...
Why Oracle and not DB2? There are numerous sound technical reasons.

And this..

==
/home/billy/> sqlplus dataware@whs
SQL*Plus: Release 9.2.0.5.0 - Production on Mon Nov 15 15:27:06 2004
Copyright (c) 1982, 2002, Oracle Corporation. All rights reserved.
Enter password:

Connected to:
Oracle9i Enterprise Edition Release 9.2.0.4.0 - 64bit Production
With the Partitioning, Oracle Label Security, OLAP and Oracle Data
Mining options
JServer Release 9.2.0.4.0 - Production

SQL> set timing on
SQL> select count(*) from x25_calls;

COUNT(*)
----------
672839836

Elapsed: 00:00:35.18

SQL> exit
Disconnected from Oracle9i Enterprise Edition Release 9.2.0.4.0 -
64bit Production
With the Partitioning, Oracle Label Security, OLAP and Oracle Data
Mining options
JServer Release 9.2.0.4.0 - Production
==

Now anyone that have an idea what databases are about, will know what
a SELECT COUNT entails, I/O wise.. and how critical table and index
designs plays in optimising access and lowering I/O.

Can any other database, Open Source or commercial, come anywhere close
to this? I doubt it.

And no, this nothing to do with hardware. The above was run against an
old K-class HP-UX platform.

Jul 19 '05 #123
ph******@intell icare.com (Pete H) wrote:
what a dork...


And that is the best you can do Pete in response to a [SELECT COUNT]
on a VLT containing 672,839,836 rows that returns the answer in 35
seconds?

I've read Oracle being slammed for this and that and what not. So
instead of responding in kind, I simply show what Oracle is capable of
in the real world.

It is also not about counting rows in general. It is *what* it entails
(think I/O) and *how* it does it.

And the How It Is Done is what differentiate Oracle from others.
Inovative means of providing accurate and consistent answers - thus
enabling this very visible performance with a [SELECT COUNT]. And
this type of innovation and performance is across the board. Not just
with a [SELECT COUNT]. Though the latter tend to drive home the point
with an extra sharp and shiny edge.
--
Billy
Jul 19 '05 #124
In article <63************ *************@p osting.google.c om> mi************@ yahoo.com (michael newport) wrote:

Serge,

would you like to see these other IBM products OpenSourced ?
I see what you mean.
Regards
Michael Newport


Why are you so sure?

--
Lady Chatterly

"I don't know who she is. I doubt that its a bot. I have my guess as
to who it is. Regard the frequency of posts. What frequent poster is
missing? That Be Packing, is an old mind trick. Ignore it." -- Pip

Jul 19 '05 #125
In article <ed************ **************@ posting.google. com> in**@Boecker-OCP.com (Yukonkid) wrote:

"Rhino" <rh****@NOSPAM. sympatico.ca> wrote in message news:<33******* **********@news 20.bellglobal.c om>...
One of my friends, Scott, is a consultant who doesn't currently have
newsgroup access so I am asking these questions for him. I'll be telling him
how to monitor the answers via Google Newsgroup searches.

Scott has heard a lot of hype about DB2 and Oracle and is trying to
understand the pros and cons of each product. I'm quite familiar with DB2
but have never used Oracle so I can't make any meaningful comparisons for
him. He does not have a lot of database background but sometimes has to
choose or recommend a database to his clients.

Scott has enough life-experience to take the marketing information produced
by IBM and Oracle with a grain of salt and would like to hear from real
DBAs, especially ones who are fluent with both products, for their views on
two questions:

1. What are the pros and cons of the current releases of DB2 and Oracle?

2. What other sources of *independent* information are available to help
someone new to databases choose between DB2 and Oracle?

This is *not* a troll and we don't want to start a flame war! Scott just
want some honest facts to help him decide which product is best at which
jobs.
Hi,


Point made.
without going into much religious talking, ask yourself:
Give neither counsel nor salt till you are asked for it.
How many OS versions of DB2 are on the market?
How many OS versions of Oracle?
How?
For DB2 you find different databases for quite every platform (OS 390,
UNIX, AIX, mainframe...) - name it. For every problem they have a
database - incompatible between each other...
In Oracle you deal with the same architecture on every OS platform
they support.
Are you positive about that?
Some of the things I like in Oracle
Do you wonder if you like in oracle?
* a lot of features to select from (Oracles index types i.e.)
* the shared sql approach
* multi-versioning and read consistency implementation (SELECT without
being blocked by writes i.e.)
Those found in their towards world understanding report.
yk
Oh ...
at least, all databases return the data that you store,


Why are you so positive?

--
Lady Chatterly

"Getting your ass kicked again I see. Lady C is quickly becomeing my
hero." -- Crawdad




Jul 19 '05 #126

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