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A cluster comprises multiple interconnected computers or servers that appear as if they're one server to finish users and applications. Oracle Real Application Clusters (Oracle RAC) enables you to cluster Oracle databases. Oracle RAC uses Oracle Cluster ware for the infrastructure to bind multiple servers so that they operate as one system.

Oracle Cluster ware may be a moveable cluster management resolution that's integrated with the Oracle info. Oracle Cluster ware is additionally a required component for using Oracle RAC. Additionally, Oracle Cluster ware enables both single-instance Oracle databases and Oracle RAC databases to use the Oracle high-availability infrastructure. Oracle Cluster ware enables you to make a clustered pool of storage to be utilized by any combination of single-instance and Oracle RAC databases.

Oracle Cluster ware is that the only cluster ware that you simply need for many platforms on which Oracle RAC operates. You'll also use cluster ware from other vendors if the cluster ware is certified for Oracle RAC.

Aims

The main aim of Oracle RAC is to implement a clustered info to produce performance, measurability and resilience.

Implementation
Oracle RAC depends on the infrastructure part Oracle Cluster ware to coordinate multiple servers and their sharing of knowledge storage. The FAN (Fast Application Notification) technology detects down-states.

Who is using RAC?

·         Motorola

·         Amazon

·         Dell

·         EBay

Implementing RAC in Business Decisions

·         Keep your application highly

·         The architecture is easily scalable.

·         The architecture can allow transparent growth

·         Meet the highest performance.

·         Instantaneous recovery

·         Data integrity

Installing Oracle Real Application Clusters

Install the grid infrastructure (which includes Oracle Clusterware and ASM) and Oracle Database software using Oracle Configuration.

 Oracle RAC environment at three levels:

Instance Administration

Database Administration

Cluster Administration (database administrators may or may not have privileges for cluster administration

Keen Technologies is an Exclusive Quality preparing center point on ORACLE Database Administration, ORACLE Apps DBA and ORACLE RAC DBA Online Training which is adjusted to present corporate necessities. The exceptional peculiarity of making an interpretation of ideas to involve is a general marvel @ Keen Technologies.