2 Supported Starting Point for Java EE Upgrade

This guide provides instructions for upgrading your Java EE applications and environment from Oracle Application Server 10g Release 3 (10.1.3.1.0) to Oracle Fusion Middleware 11g.

Note the following about the Oracle Application Server 10g Release 3 (10.1.3) software:

Oracle Application Server 10g Release 3 (10.1.3.1.0) included the components of the Oracle SOA Suite, but provided options for installing only OC4J, or only OC4J and Oracle HTTP Server. These "Standalone OC4J Instance" and "Integrated Web Server and OC4J Middle Tier" topologies are the focus of this guide.

For information about upgrading your SOA environment and SOA applications, see the Oracle Fusion Middleware Upgrade Guide for Oracle SOA Suite, WebCenter, and ADF.
Before you begin the upgrade process, you should ensure that you have applied the latest Oracle Application Server 10g Release 3 (10.1.3) patch set.

The 10.1.3.4 patch set was the latest patch set available at the time this guide was published.

For a list of the latest patch sets available for your installation, refer to My Oracle Support (formerly, OracleMetaLink):
```
http://support.oracle.com
```

Note:

If you are currently running Oracle Fusion Middleware 11g, refer to the Oracle Fusion Middleware Patching Guide, which provides information about applying the latest Oracle Fusion Middleware patches.

This guide, as well as the other upgrade guides available in the Oracle Fusion Middleware 11g documentation library, provide instructions for upgrading from Oracle Application Server 10g to the latest Oracle Fusion Middleware 11g release.