Launch the WebSphere Application Server Administrative Console.
On the Administrative Console Main screen:
In the left-hand navigation, expand Applications.
Click WebSphere enterprise applications.
Select the option next to pr.
Click Uninstall.
In the message or in the task menu, click Save .
On the Save to Master Configuration screen, click Save.
If you installed the pr-help, repeat these steps.
If you will use the same prhome directory for the new deployment, delete the existing EAR and WAR files from that directory to avoid conflict with the new pr.ear and pr-help.war files.