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Oracle® Real Application Clusters Administrator's Guide
10g Release 1 (10.1)

Part Number B10765-01
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1 Introduction to Administration

This chapter provides an overview of administering Oracle Real Application Clusters (RAC) environments. This chapter includes the following topics:

Introduction to Administering Real Application Clusters

Install your Oracle Database 10g software with the Oracle Universal Installer (OUI) and create your database with the Database Configuration Assistant (DBCA). This ensures that your RAC environment has the optimal network configuration, database structure, and parameter settings for the environment that you selected. As a DBA, after installation your tasks are to administer your RAC environment at three levels:

Administering Real Application Clusters

Use the following tools to perform administrative tasks in RAC:

Database Instance Management and Database Administration in RAC

Use Enterprise Manager, SQL*Plus, or SRVCTL to administer database instances and RAC databases as described in Chapter 2, " Administering Database Instances in Cluster Databases ".

Storage Management in Real Application Clusters

When you create your database, you can create Automatic Storage Management (ASM) disk groups and configure mirroring for ASM disk groups using the DBCA. After your RAC database is operational, you can administer ASM disk groups with Enterprise Manager or the SRVCTL utility as described in Chapter 3, " Administering Storage ".

Administering Services in Real Application Clusters

When you create a RAC database, you can also create services and assign them to instances using the DBCA. After your RAC database is operational, you can use the DBCA, as well as Enterprise Manager and SRVCTL to administer services and high availability components as described in Chapter 4, " Administering Services ".

Other high availability components include node resources such as the Virtual Internet Protocol (VIP) address for each node, the Global Services Daemon, the Enterprise Manager Agent, and the Oracle Net Listeners. These resources are automatically started when Cluster Ready Services (CRS) starts the node and CRS automatically restarts them if they fail. The application level resources are the instances and CRS background processes that run on each instance.

You can use the VIPCA to administer VIP addresses, and SRVCTL to administer other node resources. The information that describes the configuration of these components is stored in the Oracle Cluster Registry (OCR) which you administer as described in Chapter 3, " Administering Storage ".

Additional Real Application Clusters Administrative Topics

This book contains the following additional RAC administrative topics:

Overview of Using Enterprise Manager with Real Application Clusters

Enterprise Manager is a Web-based tool with RAC-specific administration and performance-related features. If you create your RAC database with the Database Configuration Assistant (DBCA), then the Enterprise Manager Database Control tool is automatically configured for your RAC environment. This means that all instances that were part of your installation have an Enterprise Manager Agent running on them. Enterprise Manager Database Control enables you to manage a single RAC database with its instance targets, Oracle Net Services listener targets, host targets, and a cluster target.

Additionally, you can configure Enterprise Manager Grid Control on other hosts either inside or outside your cluster environment. Enterprise Manager Grid Control enables you to manage multiple cluster databases, cluster database instances, and the hosts on which cluster database components operate.

Grid Control enables you to monitor and administer your entire computing environment from one network location. Use Grid Control to manage all of your enterprise services, including hosts, databases, listeners, application servers, HTTP Servers, and Web applications, as one cohesive unit. Enterprise Manager Grid Control only requires one Agent on one host in your cluster environment to perform cluster database and instance discovery. Install Enterprise Manager Grid Control from a separate CD-ROM that is part of the Oracle Database 10g Release 1 (10.1) CD-ROM Pack.

See Also:

Oracle Enterprise Manager Concepts for more information about using Enterprise Manager

You can also use both Enterprise Manager Database Control and the Enterprise Manager Grid Control to: