Enterprise Deployment Overview 1-11
The following considerations apply when using unicast to handle cluster communications:
■
All members of a WebLogic cluster must use the same message type. Mixing between multicast and unicast messaging is not allowed.
■
Individual cluster members cannot override the cluster messaging type.
■
The entire cluster must be shut down and restarted to change the message modes from unicast to multicast or from multicast to unicast.
■
JMS topics configured for multicasting can access WebLogic clusters configured for unicast because a JMS topic publishes messages on its own multicast address
that is independent of the cluster address. However, the following considerations apply:
– The router hardware configurations that allow unicast clusters may not allow
JMS multicast subscribers to work.
– JMS multicast subscribers need to be in a network hardware configuration that
allows multicast accessibility. That is, JMS subscribers must be in a muticast-enabled network to access multicast topics.
1.6 How to Use This Guide
This section covers the following topics:
■
Section 1.6.1, Installation and Configuration Procedure
■
Section 1.6.2, Overview of Installation Strategies
1.6.1 Installation and Configuration Procedure
Table 1–3 summarizes the process by which you install and configure WebCenter.
Follow the procedures indicated in the first column, in the order shown, for the chosen configuration.
Note: This document focuses on enterprise deployments in Linux
environments, but enterprise deployments can also be implemented in UNIX and Windows environments.
Table 1–3 WebCenter Installation Procedures
Perform the steps in... To configure a domain
with only Admin Server and WSM-PM
To configure a domain with Admin Server,
WSM-PM, and to extend a domain with
a SOA cluster
To configure a domain with Admin Server,
WCM-PM, SOA cluster, and WebCenter
Chapter 2, Database and Environment Preconfiguration
Yes Yes
Yes Chapter 3, Installing Oracle
HTTP Server Yes
Yes Yes
Chapter 4, Creating a Domain Yes
Yes Yes
Chapter 5, Extending the Domain for SOA Components
No Yes
Yes Chapter 6, Extending the Domain
for WebCenter Components No
No Yes
1-12 Oracle Fusion Middleware Enterprise Deployment Guide for Oracle WebCenter
1.6.2 Overview of Installation Strategies
With the Configuration Wizard you can extend the Oracle WebLogic domain by adding only the needed components. You do not need to use the Configuration Wizard
to create SOA components and the Oracle WebCenter components along with the domain that includes the Administration Server, Enterprise Manager, and WSM-PM in
a single pass. You can instead create the domain and its Administration Server, Enterprise Manager, and WSM-PM in one pass, and then extend the domain by adding
only the SOA components or if needed, only the WebCenter components in a subsequent pass. Using this incremental approach, you can verify the installation of
the servers and perform specific validations after each pass of the Configuration Wizard. In general, Oracle recommends the following approach:
1.
Run a first pass of the Configuration Wizard to install the Administration Server, Enterprise Manager, and WSM-PM described in
Chapter 4, Creating a Domain .
2.
Optionally, run a second pass of the Configuration Wizard to install the SOA components described in
Chapter 5, Extending the Domain for SOA Components
.
3.
Run a third pass to install the WebCenter components described in Chapter 6,
Extending the Domain for WebCenter Components .
Oracle recommends this modular approach in order to facilitate the verification of individual components one by one. This building block approach simplifies the
troubleshooting during the setup process and facilitates the configuration in smaller steps.
Some variation from the above topology is possible. For example, if a deployment chooses to install WebCenter alone, then only sections applicable extend with
WebCenter need to be followed. Also, in this case, it is expected that the Admin Server will exist on WCHOST1 instead and the instructions on creating the domain should be
modified appropriately. Chapter 7, Setting Up Node
Manager Recommended
optional depending on the type of security
required for the application tier
Recommended optional depending on
the type of security required for the
application tier Recommended
optional depending on the type of security
required for the application tier
Chapter 8, Configuring External Services
No No
Yes Chapter 9, Installing and
Configuring Oracle Universal Content Management
No No
Yes
Table 1–3 Cont. WebCenter Installation Procedures
Perform the steps in... To configure a domain
with only Admin Server and WSM-PM
To configure a domain with Admin Server,
WSM-PM, and to extend a domain with
a SOA cluster
To configure a domain with Admin Server,
WCM-PM, SOA cluster, and WebCenter
2
Database and Environment Preconfiguration 2-1
