11g Question: Stand alone database vs single node cluster
We are about to create a new 11.2.0.3 database that will eventually become a 11.2.0.3 in cluster database. Our host servers are hardware IBM pSeries AIX 6.1 running. We will use just Oracle Clusterware and not IBM HACMP. We also plan to use ASM for database storage. The plan is ultimately to have a 2 or a 3-node cluster, but currently, we have only an AIX server available to us.My question concerns our initial approach to the installation.
It is preferable to install the Oracle database as a stand-alone database first and then convert the database to a RAC cluster as soon as we have the material for the second node? Or would it be better to create the cluster with a single node and install and configure grid Clusterware for a single node cluster and then add the second node when the material becomes available?
I apologize if my explanation is not very clear. Any notice will be considered and appreciated. Thank you.
Hello
We are about to create a new 11.2.0.3 database that will eventually become a 11.2.0.3 in cluster database. Our host servers are hardware IBM pSeries AIX 6.1 running. We will use just Oracle Clusterware and not IBM HACMP. We also plan to use ASM for database storage. The plan is ultimately to have a 2 or a 3-node cluster, but currently, we have only an AIX server available to us.
My question concerns our initial approach to the installation.
It is preferable to install the Oracle database as a stand-alone database first and then convert the database to a RAC cluster as soon as we have the material for the second node? Or would it be better to create the cluster with a single node and install and configure grid Clusterware for a single node cluster and then add the second node when the material becomes available?
If you are planning to ACTIVE/PASSIVE here database my option:
{message: id = 10138477}
If you are planning in the future use a RAC database:
{message: id = 10142640}
If you plan use CARS in the future, you can install Oracle Clusterware without worry about licenses.
Oracle Clusterware can serve to protect any application (reboot or otherwise on the application failure), free of charge, if one or more of the following conditions are met:
http://docs.Oracle.com/CD/E11882_01/license.112/e10594/editions.htm#CJAHFHBJ
If you ARE database Oracle or EA (i.e., not one SE), you can install the product Oracle Clusterware and Oracle RAC (EE to buy the RAC Option) in a node later you can stretch clusterware adding additional nodes, and more database instance.
You do not need to create a RAC database, you can create a single database (i.e. Non-RAC) on OH software Oracle RAC using DBCA.
Although I prefer that you create a database of CAR Policy-Managed database... which makes the dynamics and the automatic (i.e. managed by Clusterware) creation/deletion of instances. You will use a POOL with a knot... later you can add more nodes in that POOL... Oracle Clusterware/PAP automatically create undo/redo/instances on the new nodes added to this POOL.
All this is transparent to your customers of Oracle.
Oracle Grid Infrastructure for a stand-alone server (Oracle Restart) is an option only if you plan used to one node. If you are using more than one node... Start with Oracle Grid Infrastructure for a Cluster (Oracle Clusterware).
Hope this helps,
Levi Pereira
Published by: Levi Pereira on March 12, 2012 13:58
Tags: Database
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