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  Oracle Database Tips by Donald Burleson

Oracle10g Grid Computing with RAC
Chapter 6 - Install, Configure and Database Creation

Shared Storage

The storage system provides an external common disk system accessible by all nodes of the cluster. The connection from the nodes to the disk sub-system is usually through a fiber switch or a SCSI connection. Once the storage volumes are presented to the hosts in the cluster, usually with the help of the logical volume manager, one can create volumes of suitable size for use in the RAC database. With the introduction of ASM methodology, the shared storage structures can be managed very easily. Once the disk groups are created with input of the disk devices, the ASM instances on each of the node in the cluster provide the shared storage resources to create the Database Files. We have discussed extensively about the preparation of storage structures in Chapter-5, "Preparing Shared Storage"

Public Network

The clustered servers or hosts need to have public network connectivity so that client machines in the network can access the resources on the RAC system.

Virtual IP Address for CRS

Oracle 10g release supports the concept of Service, which can be assigned the Virtual IP address, and which float among the specified nodes. By creating the Virtual IP address and Virtual Host names, the applications get a sense of transparency in their connection to the RAC database service. We will further examine this in later sections of this chapter.

The above text is an excerpt from:

Oracle 10g Grid & Real Application Clusters
Oracle 10g Grid Computing with RAC
ISBN 0-9744355-4-6

by Mike Ault, Madhu Tumma


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