RE: 9i RAC or 10g RAC ?
- From: "Michael Fontana" <mfontana@xxxxxxxxx>
- To: <oracle-l@xxxxxxxxxxxxx>
- Date: Wed, 12 May 2004 17:48:32 -0500
I have not actually built out a RAC system, but keep in mind the
possible hidden costs...your 4x3 linux boxes will need to be tightly
coupled, both hardware and software, with fibre optic network
connections. Also be sure that your app supports the RAC environment.
Make sure you are "pure oracle" in your backup and recovery. Some third
party software, especially for systems backup and admin, will have
issues with RAC. Not that it can't be done, but that's still another
layer of complexity.
Michael Fontana
Sr. DBA
NTT/Verio
-----Original Message-----
From: oracle-l-bounce@xxxxxxxxxxxxx
[mailto:oracle-l-bounce@xxxxxxxxxxxxx] On Behalf Of Singh, Ratnesh (GEI,
GEFA, Contractor)
Sent: Tuesday, May 11, 2004 7:14 PM
To: oracle-l@xxxxxxxxxxxxx
Subject: RE: 9i RAC or 10g RAC ?
Please advise if i am wrong, but I'm hoping that moving to RAC would =
help improve performance because :=20
Our Solaris production box, which is 12 cpu 1200 mhz,24 gb ram is cpu =
bound at peak working hours, and its lease ends in 3 months. Management
does not want to spend money on a bigger Solaris box. So we = decided to
purchase new linux boxes.
Since 12+ cpu linux boxes are very expensive, we have decided to go for
= 4cpu linux boxes featuring 2.2ghz Opteron cpu's on 9i or 10g rac, and
a = new san with faster disks.
rac is being used primarily because i want to link together these 3 or 4
= linux boxes. The combination of these factors, faster cpu's , faster
disks and bigger = ram should provide better performance, i hope ?
any advice is appreciated.=20
thanks & regards
ratnesh=20
-----Original Message-----
From: oracle-l-bounce@xxxxxxxxxxxxx
[mailto:oracle-l-bounce@xxxxxxxxxxxxx]On Behalf Of Cary Millsap
Sent: Tuesday, May 11, 2004 11:43 AM
To: oracle-l@xxxxxxxxxxxxx
Subject: RE: 9i RAC or 10g RAC ?
I think it's:
- If you want better performance, go single instance.
- If you want higher availability, go single instance.
- If you can't go single instance, then RAC is there for you.
When you have to go to RAC, everything gets a /lot/ more
expensive--performance, availability, administration, licenses,
...everything--but it appears to beat having to go with a non-Oracle
solution.
Cary Millsap
Hotsos Enterprises, Ltd.
http://www.hotsos.com
* Nullius in verba *
Upcoming events:
- Performance Diagnosis 101: 5/18 Edison NJ, 6/22 Pittsburgh, 7/20 =
Boston
- SQL Optimization 101: 5/24 San Diego, 6/14 Chicago, 6/28 Denver
- Hotsos Symposium 2005: March 6-10 Dallas
- Visit www.hotsos.com for schedule details...
-----Original Message-----
From: oracle-l-bounce@xxxxxxxxxxxxx =
[mailto:oracle-l-bounce@xxxxxxxxxxxxx]
On Behalf Of Browett, Darren
Sent: Tuesday, May 11, 2004 9:39 AM
To: oracle-l@xxxxxxxxxxxxx
Subject: RE: 9i RAC or 10g RAC ?
>From my experience, RAC performance is based on how well your
inter-connect can perform.=3D20
If it cannot handle the traffic then RAC performance will suffer.
Granted I had more then one database running on the servers, and the
servers were older slower systems.
I remember somebody commenting on this list, if you want high
performance, go single instance, if you want high availability, then go
RAC.
Darren
-----Original Message-----
From: Singh, Ratnesh (GEI, GEFA, Contractor)
[mailto:Ratnesh.Singh@xxxxxx]=3D20
Sent: Monday, May 10, 2004 2:39 PM
To: oracle-l@xxxxxxxxxxxxx
Subject: RE: 9i RAC or 10g RAC ?
Better Performance is my main concern.=3D3D20
We intend to move our production database, which is currently 150 gig =
=3D =3D3D and is expected to grow to 500 gig in a year.
Business case for RAC is primarily $$ because Management wants to move =
=3D =3D3D all Solaris boxes to Redhat Linux. Our current Solaris box is
12cpu, and target is 3 or 4 4-cpu linux boxes =3D3D cluster running RAC.
That also would be our first step towards High Availability.
thanks & regards
ratnesh=3D3D20
-----Original Message-----
From: oracle-l-bounce@xxxxxxxxxxxxx
[mailto:oracle-l-bounce@xxxxxxxxxxxxx]On Behalf Of Mladen Gogala
Sent: Monday, May 10, 2004 5:26 PM
To: oracle-l@xxxxxxxxxxxxx
Subject: Re: 9i RAC or 10g RAC ?
What do you consider advantage? What is your business case for RAC? What
do you plan to do with RAC? Stability of RAC on Linux is, from all that
I hear, very good, for both versions.=3D3D20
On 05/10/2004 05:20:04 PM, "Singh, Ratnesh (GEI, GEFA, Contractor)" =
=3D3D
wrote:
> Does 10g rac have significant improvements or new features as compared
=3D3D
=3D3D3D
> to 9i rac ?
> Is 10g rac more stable than 9i rac ?=3D3D3D20
--=3D3D20
Mladen Gogala
Oracle DBA
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