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From: Mark D Powell on 22 Apr 2010 10:49
On Apr 21, 3:04 pm, Big George <jbet...(a)gmail.com> wrote:
> Ok, it's a dummy question, but we have some doubts about an
> outsourcing service.
>
> We need in our office to implement Oracle 10gR2 RAC, two nodes in W2k3
> Server 64 bits. Our two servers are in a HP Bladesystem c3000. Each
> one has 32 GB RAM and processor Intel Xeon E5540.
>
> We use Oracle database from 5 years ago. We have some experience, but
> we are not masters.
>
> We decided to take an outsourcing service for RAC implementation and
> for some external reasons it's not so easy not to hire them.
>
> This outsourcing service has estimated about 120 hours to implement
> Oracle RAC. I think it's excessive. Maybe I'm wrong about it.
>
> I know that time will depend on what we need to be done, so this is
> basically what we need:
> (this is a translation to English, sorry for mistakes)
> Note: When we talk about "migration", it means passing one instance in
> Oracle to Oracle RAC
>
> a. Planning
>       Collect or gather information
>       Strategy and Planification for implementation and migration
>
> b. RAC installation for production environment
>       Review and evaluation for configuring W2k3 Server in 64-bits
>       Installing and configuring Clusterware
>       Installing and configuring ASM
>       Installing and creating database in RAC of 2 nodes
>       Configuring TAF (Transparent Application Failover)
>       Tuning RAC
>
> c. Data Migration and release to production
>       Upgrade and consolidate 8 databases or Oracle instances to RAC
> (100Gb)
>       Tuning database
>       Testing, including conecction from .NET 1.1 or 3.5 applications
> using ODP.NET to database in 64-bits O/S.
>       Release to production
>
> If I distribute 120 hours for a RAC implementation, it means more or
> less 6 hour per day, from Monday to Friday, for 4 weeks!
>
> So, one month for implementing Oracle RAC? Really? If I had that
> amount of time, I could do it by myself.

To put on RAC you also need to install Clusterware and may need ASM.
An estimate of 6 hours per day for 4 weeks is not unreasonable. You
might be able to do the entire process in a few days or it could take
a couple of months. It all depends on if you have done it before,
with the same release, who is handling the OS part, if everyone
involved has read the installation materials and actually followed
them, if the hardware is approved/certified for use with RAC, etc ...

This is all before you take into account the application requirements,
testing, migration, etc ...

HTH -- Mark D Powell --
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