Oracle WebLogic Server 11g Administration Handbook

Production Redeployment Strategies

When an application is updated, administrators have to redeploy it. You can do this in a development environment by simply using the redeploy option, which immediately undeploys the running application, replaces its deployment files with the updated files, and restarts it. The server immediately replaces the application's class files and libraries in this case. Replacing a running application's deployment files with updated files of either an application or a stand-alone Java EE module is called in-place redeployment. In-place redeployment makes the application unavailable until the redeployment is complete, and it will disconnect all existing user connections to the application.

You can schedule an in-place ...