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Oracle® Fusion Middleware Exalogic Enterprise Deployment Guide
Release EL X2-2 and EL X3-2

Part Number E18479-10
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A Migration Considerations for Oracle Exalogic

This chapter provides general guidelines and deployment configuration recommendations for migrating your existing application deployments to the Oracle Exalogic environment.

Your existing environments may vary based on the following:

If you are migrating multiple domains, each of which may be different from each other. Given the differences in existing deployments, there is no set series of steps to follow when migrating to the Oracle Exalogic environment.

The chapter includes the following sections:

A.1 Migration Process

To migrate your existing environment, Oracle recommends the following steps:

A.2 Recommended Topology

Oracle recommends the following topology for the Exalogic environments:

For more information, see Section 5, "Configuring Oracle Fusion Middleware".

A.3 Application Deployment Configuration Guidelines

In general, applications can be migrated to the Exalogic environment with minimal changes. Consider the following:

A.3.1 Shared File System

The Oracle Exalogic environment contains a shared file system available to all servers. When migrating your application, Oracle recommends that the application archives and domain directories be located on the shared file system. In an Oracle WebLogic Server domain, each individual server can either share a domain directory or have its own domain directory. In the Exalogic environment, Oracle recommends that one domain directory be shared among all servers.

A.3.2 Staging Model

Oracle WebLogic Server supports three types of deployment staging modes for deployed applications. For more information, see section "Controlling Deployment File Copying with Staging Modes" in the Oracle Fusion Middleware Deploying Applications to Oracle WebLogic Server.

In the Oracle Exalogic environment, application archives are located on the shared storage and one physical copy of the application is available to all servers. Because of this, Oracle recommends using the nostage staging mode for applications.