Oracle B32100-01 - Manual (Page 185)

Installing in High Availability Environments: OracleAS Disaster Recovery 10-1
10
Installing in High Availability Environments:
OracleAS Disaster Recovery
This chapter describes how to install Oracle Application Server in OracleAS Disaster
Recovery configurations. OracleAS Disaster Recovery is one of the high availability
environments supported by Oracle Application Server.
Contents of this chapter:
■
Section 10.1, "OracleAS Disaster Recovery: Introduction"
■
Section 10.2, "Setting up the OracleAS Disaster Recovery Environment"
■
Section 10.3, "Installing Oracle Application Server in an OracleAS Disaster
Recovery Environment"
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Section 10.4, "Installing the OracleAS 10g (10.1.2.0.2) Standalone Install of
OracleAS Guard into Oracle Homes"
■
Section 10.5, "Patching OracleAS Guard Release 10.1.2.0.0 with Release 10.1.2.0.2"
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Section 10.6, "What to Read Next"
10.1 OracleAS Disaster Recovery: Introduction
Use the OracleAS Disaster Recovery environment when you want to have two
physically separate sites in your environment. One site is the production site, and the
other site is the standby site. The production site is active, while the standby site is
passive; the standby site becomes active when the production site goes down.
OracleAS Disaster Recovery supports a number of basic topologies for the
configuration of the Infrastructure and middle tier on production and standby sites.
OracleAS Disaster Recovery supports these basic topologies:
■
Symmetrical topologies -- strict mirror of the production site with collocated
Oracle Identity Management and OracleAS Metadata Repository Infrastructure
■
Asymmetrical topologies -- simple asymmetric standby topology with collocated
Oracle Identity Management and OracleAS Metadata Repository Infrastructure
■
Separate OracleAS Metadata Repository for OracleAS Portal with collocated
Oracle Identity Management and OracleAS Metadata Repository Infrastructure
(the Departmental Topology)
■
Distributed Application OracleAS metadata Repositories with Non collocated
Oracle Identity Management and OracleAS Metadata Repository Infrastructure
In a symmetric topology, each node in the standby site corresponds to a node in the
production site. This includes the nodes running both OracleAS Infrastructure and