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Upgrade Planning Guide

# Introduction

This document provides information designed to help you plan and perform your upgrade to WebLogic Platform 8.1 Service Pack 6 (SP6). Topics include:

- Roadmap for Upgrading WebLogic Platform—Provides links to detailed instructions for upgrading WebLogic Platform component applications to version 8.1 SP6, SP5, SP4, SP3, SP2, or 8.1.
- FAQ for Upgrading WebLogic Platform—Provides answers to frequently asked questions about the upgrade process.

# WebLogic Platform Terminology

We recommend that, before proceeding, you familiarize yourself with the following terminology:

- Upgrade—To update BEA WebLogic Platform (and its components) from a previous release or service pack to a more recent release or service pack. This may include updating an existing application or domain configuration to run in a more recent version.
- Migrate—To move an application or domain configuration from a third-party product to a BEA product.
- Interoperability—(1) The capability of an application deployed in one release or service pack to communicate with another application that is deployed in a different release or service pack. (2) The capability of WebLogic Platform components to communicate with third-party software via standard protocols.
- Compatibility—The capability of an application built using one release or service pack to run in another release or service pack, with or without rebuilding the application.