Upgrade JEE Application from Oracle OC4J to Weblogic

Oracle has some nice online reference on this topic:
http://docs.oracle.com/cd/E23943_01/upgrade.1111/e10126/overview_app_migration.htm#CHDFHBGA


First, plan your environment. Determine your hardware requirements (processor power, memory, hard disk size, operating system).

Second, estimate the activities, come out with an estimate of effort. work out the cost, budget and etc. Project Management related tasks.

3. determine the core software versions, sort out the license cost and etc.

4. The following is an example work breakdown on the technical side:

. build development environment, for example, Eclipse, Weblogic 10.3.6, CVS as repository, JDK 7
. upgrade database. Set up database. for example, schemas, Advanced Queues (Queue table, Queues)
. Server software installation and configuration, including creating data transport set from old system;
. update build.xml, library, and etc to get the application code compiled.
. configure local weblogic servers with necessary data sources, JMS AQ configurations.