.Edit the following file and locate the line that defines the credentials property for use the ias_admin user:
The following example shows the section of jazn-data.xml with the credentials entry in boldface type:
2.Remove the entire line that contains the <credentials> property from jazn-data.xml.
3.Enter the following command from DOS Command window:
%ORACLE_HOME%\bin\emctl set password reset <new password>
The steps outlined in the previous lines work, BUT you have to reboot the machine in order for you to pick up the new password. You can’t simply stop/restart the server, because when you try that, it will ask you for the ias_admin password. But a shutdown/restart will work. Been there and survived!
Actually, you can do an emctl restart since emctl stop asks for the password, but start and restart do not
Be happy administrator