Re: Oracle 11g r2 one node RAC
From: Mark D Powell <Mark.Powell2_at_hp.com>
Date: Fri, 25 Dec 2009 19:06:42 -0800 (PST)
Message-ID: <4f4f1758-9ae6-403e-a7ad-1638ed9c80a1_at_r24g2000yqd.googlegroups.com>
On Dec 24, 9:40 am, zigzagdna <zigzag..._at_yahoo.com> wrote:
> I have read Oracle’s documentation on this new feature is 11gr2, but
> not clear what exactly it does?http://www.oracle.com/technology/products/database/clustering/pdf/ug_...
> 1. Can I have multiple instances of same database on same node of
> RAC. In absence of one node RAC, I will have one instance on server 1,
> another instance on server2, etc. If only one instance is allowed on
> a single node, then what is the purpose of one node RAC? I am not
> using vmware or vpar's.
>
> 2. During setup/configuration of one node ARC, it asks for names of
> other nodes/severs where database can be moved using omotion. If I am
> just setting up RAC for learning, I do not have any other servers to
> specify. Is it OK not to specify any servers for omotion.
> 3. Assuming that I can have multiple instances of same database on one
> node, is it necessary for me to use ASM. Is it possible to use RAW
> devices of UNIX instead of ASM for one node RAC setup?
> Thanks a lot.
Date: Fri, 25 Dec 2009 19:06:42 -0800 (PST)
Message-ID: <4f4f1758-9ae6-403e-a7ad-1638ed9c80a1_at_r24g2000yqd.googlegroups.com>
On Dec 24, 9:40 am, zigzagdna <zigzag..._at_yahoo.com> wrote:
> I have read Oracle’s documentation on this new feature is 11gr2, but
> not clear what exactly it does?http://www.oracle.com/technology/products/database/clustering/pdf/ug_...
> 1. Can I have multiple instances of same database on same node of
> RAC. In absence of one node RAC, I will have one instance on server 1,
> another instance on server2, etc. If only one instance is allowed on
> a single node, then what is the purpose of one node RAC? I am not
> using vmware or vpar's.
>
> 2. During setup/configuration of one node ARC, it asks for names of
> other nodes/severs where database can be moved using omotion. If I am
> just setting up RAC for learning, I do not have any other servers to
> specify. Is it OK not to specify any servers for omotion.
> 3. Assuming that I can have multiple instances of same database on one
> node, is it necessary for me to use ASM. Is it possible to use RAW
> devices of UNIX instead of ASM for one node RAC setup?
> Thanks a lot.
"Oracle RAC One Node is a single instance of Oracle RAC running on one node in a cluster. Many databases can be consolidated into a single cluster with minimal overhead yet providing the high availability benefits of failover protection, online rolling patch application, as well as rolling upgrades for Operating System and Oracle Clusterware. "
Ref: http://www.oracle.com/technology/products/database/clustering/pdf/ds-oracleraconenode-2009.pdf
Much more detail is available at
http://download.oracle.com/docs/cd/E11882_01/rac.112/e10718/whatsnew.htm
HTH -- Mark D Powell -- Received on Fri Dec 25 2009 - 21:06:42 CST