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ORACLE RAC 11g Administration
Radhika Technosoft head

The main aim of Oracle RAC is to implement a clustered database to provide performance, scalability and resilience. Oracle RAC allows multiple computers to run Oracle RDBMS software simultaneously while accessing a single database, thus providing clustering.

In a non-RAC Oracle database, a single instance accesses a single database. The database consists of a collection of data files, control files, and redo logs located on disk. The instance comprises the collection of Oracle-related memory and operating system processes that run on a computer system.

In an Oracle RAC environment, 2 or more computers (each with an Oracle RDBMS instance) concurrently access a single database. This allows an application or user to connect to either computer and have access to a single coordinated set of data.

Identify Real Application Clusters components

  1. Understand Real Application Clusters
  2. Clusters Scalability and High Availability
  3. The Necessity of Global Resources
  4. Parallel Execution with RAC
  5. RAC Software and Database Principles
  6. RAC and Shared Storage Technologies
  7. Understand VIPs

Install, create, administer, and monitor a Real Application Clusters database

  1. Describe the installation of Oracle RAC 10g
  2. Perform RAC pre-installation tasks
  3. Perform cluster setup tasks
  4. Install Oracle Clusterware
  5. Install and configure Automatic Storage Management (ASM)
  6. Install the Oracle database software
  7. Create a cluster database
  8. Install the Enterprise Manager agent on each cluster node

Use configuration and management tools for Real Application Clusters databases

  1. Use Enterprise Manager cluster database pages
  2. Define redo log files in a RAC environment
  3. Define undo tablespaces in a RAC environment
  4. Start and stop RAC databases and instances
  5. Modify initialization parameters in a RAC environment
  6. Manage ASM instances in a RAC environment

Develop a backup and recovery strategy for Real Application Clusters databases

  1. Configure the RAC database to use ARCHIVELOG mode and the flash recovery area
  2. Configure RMAN for the RAC environment

Configure and monitor Oracle Clusterware resources

  1. Manually control the Oracle Clusterware stack
  2. Change voting disk and OCR configuration
  3. Back up or recover your voting disks and OCR files
  4. Change VIP addresses
  5. Use the CRS framework

Review high availability best practices

  1. Add a new node to your cluster database
  2. Remove a node from your cluster database
  3. Decide on the best ASM configuration to use
  4. Patch your RAC system in a rolling fashion
  5. High Availability Architecture

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