Oracle Clusterware and RAC
Cluster enables servers to communicate with each other, so that they appear to function as a collective unit. This combination of servers is commonly known as a cluster. Although the servers are standalone servers, each server has additional processes that communicate with other servers. In this way the separate servers appear as if they are one system to applications and end users.
Oracle Clusterware provides the infrastructure necessary to createcluster. It is responsible for grouping the individual computers and making it part of a cluster. Oracle Clusterware provides the infrastructure necessary to run Oracle Real Application Clusters (Oracle RAC). OracleClusterware is needed to have Oracle RAC.
Oracle RAC means clustered Oracle database. Multiple instances running on serveralserver machines will be clustered and provided as a single database to the end user.
Cluster enables servers to communicate with each other, so that they appear to function as a collective unit. This combination of servers is commonly known as a cluster. Although the servers are standalone servers, each server has additional processes that communicate with other servers. In this way the separate servers appear as if they are one system to applications and end users.
Oracle Clusterware provides the infrastructure necessary to createcluster. It is responsible for grouping the individual computers and making it part of a cluster. Oracle Clusterware provides the infrastructure necessary to run Oracle Real Application Clusters (Oracle RAC). OracleClusterware is needed to have Oracle RAC.
Oracle RAC means clustered Oracle database. Multiple instances running on serveralserver machines will be clustered and provided as a single database to the end user.
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