Re: 9i RAC or 10g RAC ?
- From: "zhu chao" <chao_ping@xxxxxxxxxxx>
- To: <oracle-l@xxxxxxxxxxxxx>
- Date: Tue, 11 May 2004 10:54:09 +0800
During my 2 years' experience running both linux and solaris,
single instance oracle on linux never crashed. Single instance on solaris
crashed 1 time.
RAC linux crashed several times(now it is 9205). Reasons:
1. Earlier version used watchdog, which is quite poor.Human error rebooted
one node and the other node crashed too.
2. Time adjust crash one node in earlier versions(version before 9.2.0.3),
now seems fixed.
3. Unknown reason, one node hang with one session reporting 7445. Whole
machine hangs. Hangcheck does not reboot the instance.
4. Data guard host hangs(run out of memory) and arch process hangs too,
which caused the database hang.(not related to rac , though).
5. With RAC, some batch operation got very slow during system maintenance
when load is very low.
If for high avaliable, RAC is indeed not a very good solution, unless
you can always wait to 8.1.7.4 or 9.2.0.5 etc, and you application is really
stable and designed for RAC. RAC is more easy to crash indeed.
Regards
Zhu Chao.
----- Original Message -----
From: "Singh, Ratnesh (GEI, GEFA, Contractor)" <Ratnesh.Singh@xxxxxx>
To: <oracle-l@xxxxxxxxxxxxx>
Sent: Tuesday, May 11, 2004 5:38 AM
Subject: RE: 9i RAC or 10g RAC ?
> Better Performance is my main concern.=20
> We intend to move our production database, which is currently 150 gig =
> and is expected to grow to 500 gig in a year.
>
> Business case for RAC is primarily $$ because Management wants to move =
> all Solaris boxes to Redhat Linux.
> Our current Solaris box is 12cpu, and target is 3 or 4 4-cpu linux boxes =
> cluster running RAC.
> That also would be our first step towards High Availability.
>
> thanks & regards
> ratnesh=20
>
> -----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.=20
>
> On 05/10/2004 05:20:04 PM, "Singh, Ratnesh (GEI, GEFA, Contractor)" =
> wrote:
> > Does 10g rac have significant improvements or new features as compared =
> =3D
> > to 9i rac ?
> > Is 10g rac more stable than 9i rac ?=3D20
> --=20
> Mladen Gogala
> Oracle DBA
>
>
>
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