Reset the oc4jadmin password using the following procedure while you are logged in as the user who installed the Oracle Application Server instance:
1. Stop OC4J and the Application Server Control.
2. Locate and open the following file in a text editor:
3. Locate the line that defines the credentials property for the oc4jadmin user.
4. Replace the existing encrypted password with the new password.
Be sure to prefix the password with an exclamation point (!). For example: