How to reset OAS control console login password ?

On Windows systems

This is for IAS_ADMIN

Shutdown the service.

%ORACLE_HOME%\opmn\bin\opmnctl stopproc ias-component=OC4J

Locate and backup the jazn-data.xml (10.1.2) or system-jazn-data.xml (10.1.3) file:

** 10.1.2 On Windows systems: $ORACLE_HOME\sysman\j2ee\config\jazn-data.xml

** 10.1.3 On Windows systems:  %ORACLE_HOME%\j2ee\home\config\system-jazn-data.xml

10.1.3

The following example shows the section of system-jazn-data.xml with the encrypted credentials entry in boldface type:

<realm>
  <name>jazn.com</name>
   <users>
    <user>
      <name>oc4jadmin</name>
      <display-name>OC4J Administrator</display-name>
      <description>OC4J Administrator</description>
       <credentials>{903}4L50lHJWIFGwLgHXTub7eYK9e0AnWLUH</credentials>
    </user>

 Replace the existing encrypted password with the new password.
Be sure to prefix the password with an exclamation point (!). For example:

<credentials>!mynewpassword123</credentials>

Start the Application Server Console

%ORACLE_HOME%\opmn\bin\opmnctl startproc ias-component=OC4J

After the restart, the Application Server Control will be using your new Administrator (oc4jadmin) password, which will be stored in encrypted format within the system-jazn-data.xml file.

Login to the Application Server Console and authenticate with the ias_admin user (10.1.2) or the oc4jadmin user (10.1.3) and the new password.

Hope that helps