Oracle 11g RAC components

In addition to the many hardware, network, and storage components that drive the foundation of Oracle 11g RAC, we have the complex software called Clusterware that lies at the heart of the Oracle RAC architecture. Oracle 11g RAC consists of these physical devices along with the Clusterware and Automatic Storage Management (ASM) software. ASM provides the mechanism for managing storage within RAC environments and uses both a special type of instance called an ASM instance and special disk volume management in the form of ASM disks and ASM diskgroups. Clusterware refers to the Oracle software layer that performs the operational tasks within the Oracle-clustered environment for RAC. In summary, the Clusterware consists of the following components for Oracle 11g RAC:

• Voting Disk(s)

• Oracle Clusterware Registry (OCR)

• Background processes that manage clusterwide operations and provide functionality for Oracle 11g R1 and 11g R2 RAC

In addition to the Oracle 11g Clusterware...