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Installation Concepts

This chapter discusses the installation and configuring concepts for Oracle9i Application Server (Oracle9iAS) and provides feature information about each Oracle9iAS installation. Oracle recommends reading this chapter before proceeding with your intended installation so that you will have a better understanding of the concepts and intent of each Oracle9iAS installation. The following topics are covered in this chapter:

• Oracle9iAS Install Overview

• Oracle9iAS Installation

• Oracle9iAS Infrastructure Installation

• Oracle9iAS Developer Kits Installation

• Deployment Topologies

  See also: Oracle9i Application Server Concepts Guide

1.1 Oracle9iAS Install Overview

This section describes the three types of Oracle9iAS installation. The Oracle9iAS installation consists of:

• Oracle9iAS Installation: The Oracle9iAS installation creates a scalable, secure, and integrated middle-tier platform that enables you to deliver Web content, host Web applications, connect to back-office applications, and access your data on wireless devices. All Oracle9iAS applications run on the middle tier.

• Oracle9iAS Infrastructure Installation: The Oracle9iAS Infrastructure installation creates a combination of a metadata repository database, single sign-on server, Lightweight Directory Access Protocol (LDAP), version 3 (v3) directory server, and management server that supports Oracle9iAS deployment. The database contains a collection of schemas and metadata that enable Oracle9iAS components. Oracle9iAS Infrastructure is a prerequisite for many Oracle9iAS middle-tier components.

  Note: Oracle9iAS Infrastructure must be installed and configured prior to most installations of Oracle9iAS. Oracle recommends installing Oracle9iAS Infrastructure on a separate computer for optimal performance.

• Oracle9iAS Developer Kits Installation: The Oracle9iAS Developer Kits installation enables you to create XML applications, develop portlets, enable wireless applications, integrate Web sites with wireless devices, and develop application provider Web services. The Oracle9iAS Developer Kits installation is not required, but is an option if you want to setup a test environment.

  Note: You must use the same operating system account when adding additional Oracle9iAS installations on the same host.

Figure 1-1 shows an overview of the architecture of Oracle9iAS. Your architecture will depend on the type of Oracle9iAS installation you select.

Figure 1-1 Oracle9iAS Architecture

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1.2 Oracle9iAS Installation

All Oracle9iAS applications run on the middle tier.

The Oracle9iAS installation offers the following install types:

• J2EE and Web Cache: Provides a Web server that enables you to develop and deploy Java 2 Enterprise Edition (J2EE) applications, use J2EE and Simple Object Access Protocol (SOAP) based Web services, and accelerates Web site performance with Oracle9iAS Web Cache.

• Portal and Wireless: Enables the deployment of enterprise portals and wireless applications. Includes all Oracle9iAS components available in the J2EE and Web Cache install type.

• Business Intelligence and Forms: Enables analysis of clickstream data, personalization of applications, use of forms-based applications, and deployment of Decision Support System and Web-based reports. Includes all Oracle9iAS components available in the Portal and Wireless install type.

• Unified Messaging: Enables the messaging capabilities of Oracle9iAS. Includes all of the Oracle9iAS components available in the Business Intelligence and Forms install type.

Table 1-1 lists the four installation options for Oracle9iAS, and the Oracle9iAS components that are installed with each option.

Table 1-1 Oracle9iAS Components 

Component	J2EE and Web Cache	Portal and Wireless	Business Intelligence and Forms	Unified Messaging
Oracle9iAS Web Cache	YES	YES	YES	YES
Oracle HTTP ServerFoot 1	YES	YES	YES	YES
Oracle9iAS Container for J2EE	YES	YES	YES	YES
Oracle Enterprise Manager Web site	YES	YES	YES	YES
Oracle9iAS PortalFoot 2	no	YES	YES	YES
Oracle9iAS Wireless	no	YES	YES	YES
Oracle9iAS DiscovererFoot 3	no	no	YES	YES
Oracle9iAS Reports Services	no	no	YES	YES
Oracle9iAS Clickstream Intelligence	no	no	YES	YES
Oracle9iAS Forms Services	no	no	YES	YES
Oracle9iAS Personalization	no	no	YES	YES
Oracle9iAS Unified Messaging	no	no	no	YES

1 Oracle HTTP Server installs the following Oracle mods: mod_oc4j, mod_jserv, mod_osso, mod_ossl, mod_plsql, mod_proxy, DMS, FastCGI, HiAv Infrastructure, Oracle9iAS Object Caching Services for Java, SOAP, DBI/DBD, Clickstream Collector Agent. 2 Oracle9iAS Portal installs Oracle Ultra Search and Oracle9i Syndication Server. 3 Oracle9iAS Discoverer installs Discoverer Viewer and Discoverer Plus.

See Also: Appendix E, "Components" Oracle9i Application Server Concepts Guide.

Prior to installing an instance of the Portal and Wireless, Business Intelligence and Forms, or Unified Messaging install type, you must install and configure the Oracle9iAS Infrastructure somewhere in your network, optimally on a separate computer.

The J2EE and Web Cache install type does not require Oracle9iAS Infrastructure.

During the installation you will be asked if you want to use single sign-on or clustering functionality. An application server cluster is a collection of application server instances with identical configuration and application deployment. Clusters enforce homogeneity between member instances so that a cluster of application server instances can appear and function as a single instance. With appropriate front-end load balancing, any instance in an application server cluster can serve client requests. This simplifies configuration and deployment across multiple instances and enables fault tolerance among clustered instances.

Clustering enables you to expand your application server capabilities and single sign-on simplifies security over your network. If you want to use either of these features, then you need to install Oracle9iAS Infrastructure first. Information about the application server cluster is maintained in the Oracle9iAS Infrastructure Metadata Repository. If you are not sure, you can configure for clustering and single sign-on later.

See Also: Oracle9i Application Server Administrator's Guide Oracle9iAS Single Sign-On Administrator's Guide Oracle9iAS Containers for J2EE User's Guide

Figure 1-2 shows the decision process you need to consider before installing Oracle9iAS.

Figure 1-2 Oracle9iAS Decision Tree

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Based on your Oracle9iAS install type selection, all Oracle9iAS components for that install type are installed on your computer. However, you can selectively configure the Oracle9iAS components you wish to use. You can configure Oracle9iAS components during the install session, or you can use the Oracle Enterprise Manager Web site to complete the Oracle9iAS component configuration later.

Chapter 2, "Getting Started" lists the hardware and software requirements for installing Oracle9iAS.

Chapter 3, "Oracle9i Application Server" describes installing the four Oracle9iAS install types.

See Also: Oracle9i Application Server Administrator's Guide

1.3 Oracle9iAS Infrastructure Installation

The Oracle9iAS Infrastructure installation consists of:

• Oracle9iAS Metadata Repository: Pre-seeded database containing metadata needed to run Oracle9iAS instances.

• Oracle Internet Directory: Directory service that enables sharing information about dispersed users and network resources. Oracle Internet Directory implements the LDAP, v3.

• Oracle9iAS Single Sign-On: Creates an enterprise-wide user authentication to access multiple accounts and Oracle9iAS applications.

• Oracle Management Server: Processes system management tasks and administers the distribution of these tasks across the network using the Oracle Enterprise Manager Console. The Console and its three-tier architecture can be used with the Oracle Enterprise Manager Web site to manage not only Oracle9iAS, but your entire Oracle environment.

• J2EE and Web Cache: For internal use with Oracle9iAS Infrastructure. Not used for component application deployment.

  Note: Oracle does not support the use of this copy of J2EE and Web Cache for customer application deployment. This installation of J2EE and Web Cache configures Oracle HTTP Server and Oracle9iAS Container for J2EE.

Oracle9iAS Infrastructure is required for all of the Oracle9iAS middle-tier applications except when installing the J2EE and Web Cache install type without single sign-on or clustering. Prior to installing an instance of either the Portal and Wireless, Business Intelligence and Forms, or Unified Messaging install types, you must install and configure the Oracle9iAS Infrastructure somewhere in your network. Oracle recommends installing Oracle9iAS Infrastructure on a separate computer.

Typical infrastructure configuration includes one Oracle9iAS Single Sign-On instance and one Oracle Internet Directory instance in a network, with one or more installations of Oracle Management Server.

Oracle recommends using the version of Oracle Internet Directory that ships with Oracle9iAS. However, if you have an existing version of Oracle Internet Directory that you want to use for your installation of Oracle9iAS, then refer to Oracle9i Application Server: Migrating from Oracle9i Application Server 1.0.2.2 for further instructions on configuration and deployment. For more certification information about Oracle Internet Directory, go to:

http://metalink.oracle.com

Chapter 2, "Getting Started" lists the hardware and software requirements for installing Oracle9iAS.

Chapter 4, "Oracle9iAS Infrastructure" describes installing Oracle9iAS Infrastructure.

1.4 Oracle9iAS Developer Kits Installation

The Oracle9iAS Developer Kits installation enables the user to create XML applications, develop portlets, enable wireless applications, integrate Web sites with wireless devices, and develop application provider Web services.

Oracle9iAS Developer Kits installs:

• Oracle XML Developer's Kit

• Oracle9iAS Portal Developer's Kit

• Oracle9iAS Wireless Developer's Kit

• Oracle LDAP Developer's Kit.

Oracle9iAS Developer Kits components are also included with the Oracle9iAS installation.

1.5 Deployment Topologies

All of the Oracle9iAS middle-tier and Oracle9iAS Infrastructure components should share the same management and security infrastructure, and typically share the same metadata repository. However, it is possible to use more than one metadata repository.

The following sections show possible installations of Oracle9iAS:

• J2EE and Web Cache Installation

• J2EE and Web Cache with Oracle9iAS Infrastructure

• Multiple Instances of Oracle9iAS with Oracle9iAS Infrastructure

• Oracle9iAS and Customer Database Usage

  Note: The Oracle9iAS installation can be installed as single or multiple instances on one or many hosts.

  See Also: Figure 1-1, "Oracle9iAS Architecture"

1.5.1 J2EE and Web Cache Installation

Figure 1-3 shows an installation of J2EE and Web Cache on a host. This topology supports a Web server that can support the deployment of J2EE-compliant applications and cache Web pages. This topology does not support single sign-on or application server clustering functionality. In order to use single sign-on or clustering functionality you must install Oracle9iAS Infrastructure.

Figure 1-3 J2EE and Web Cache Installation

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See Also: Figure 1-4, "J2EE and Web Cache with Oracle9iAS Infrastructure"

1.5.2 J2EE and Web Cache with Oracle9iAS Infrastructure

Figure 1-4 shows an installation of J2EE and Web Cache using Oracle9iAS Infrastructure. The installation of J2EE and Web Cache is on a different host from the Oracle9iAS Infrastructure installation. (Oracle recommends installing Oracle9iAS Infrastructure on a separate computer for optimal performance). The Oracle9iAS Infrastructure installation enables deployment of applications that use enterprise-wide single sign-on capabilities, as well as application server instance clustering.

The Portal and Wireless, Business Intelligence and Forms, or Unified Messaging install types feature the same installation architecture shown in Figure 1-4. Oracle9iAS Infrastructure must be installed and configured prior to installation.

Figure 1-4 J2EE and Web Cache with Oracle9iAS Infrastructure

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1.5.3 Multiple Instances of Oracle9iAS with Oracle9iAS Infrastructure

You can install single or multiple instances of Oracle9iAS install types, J2EE and Web Cache, Portal and Wireless, Business Intelligence and Forms, and Unified Messaging, on the same host.

Figure 1-5 shows instances of J2EE and Web Cache, and Portal and Wireless installed on Host 1, and Business Intelligence and Forms,and Unified Messaging installed on Host 2, using the installation of Oracle9iAS Infrastructure on Host 3. Multiple instances of different Oracle9iAS install types can use one instance of Oracle9iAS Infrastructure.

Figure 1-5 Multiple Instances of Oracle9iAS with Oracle9iAS Infrastructure

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See Also: Oracle9i Application Server Administrator's Guide

1.5.4 Oracle9iAS and Customer Database Usage

Figure 1-6 is the same as Figure 1-5 except that the instance of Oracle9iAS Unified Messaging on Host 2 is also using an Oracle9i customer database on Host 4.

Oracle9iAS components that interact with customer data use the customer database for metadata schema storage. Multiple Oracle9iAS component installations of the same type can use the same, or different customer databases. A single database instance can hold metadata schemas and data for different types of Oracle9iAS components.

The following Oracle9iAS components must connect to a customer database:

• Oracle9iAS Unified Messaging

• Oracle9iAS Discoverer

• Oracle9iAS Personalization

• Oracle9iAS Portal (optional)

• Oracle9iAS Clickstream Intelligence (optional)

Oracle9iAS Portal and Oracle9iAS Clickstream Intelligence can connect to a customer database or use the Oracle9iAS Metadata Repository

After you configure the middle tier to use one of the above Oracle9iAS components, you must run the component configuration tool to place the required data into your database. Refer to component documentation for the following:

• Oracle9iAS Unified Messaging (Oracle9iAS Unified Messaging Administrator's Guide)

• Oracle9iAS Discoverer (Oracle9iAS Discoverer Administrator's Guide)

• Oracle9iAS Personalization (Oracle9iAS Personalization Administrator's Guide)

• Oracle9iAS Portal (Oracle9iAS Portal User's and Administrator's Guide)

• Oracle9iAS Clickstream Intelligence (Oracle9iAS Clickstream Intelligence Release Notes and Oracle9iAS Clickstream Intelligence Administrator's Guide)

Figure 1-6 Oracle9iAS and Customer Database Usage

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See Also: Oracle9i Application Server Administrator's Guide

1.5.5 Oracle9iAS using v.1.0.2.2 Origin Database

You can use an existing Oracle9iAS (v.1.0.2.2) database for specific Oracle9iAS components. Refer to Oracle9i Application Server: Migrating from Oracle9i Application Server 1.0.2.2.

1.5.6 Other Topology Considerations

You can achieve optimal performance for extensively used Oracle9iAS components by connecting to a metadata repository located on a separate host. This type of configuration is accomplished by installing Oracle9iAS Infrastructure on the separate host without installing Oracle9iAS Single Sign-On and Oracle Internet Directory. Connect the Oracle9iAS components to the new metadata repository by clicking on the Use Infrastructure link on the Oracle Enterprise Manager Web site.

See Also: Section 3.3.1, "Starting the Oracle Enterprise Manager Web Site" Oracle9i Application Server Administrator's Guide Oracle9i Application Server: Migrating from Oracle9i Application Server 1.0.2.2