If you are in the situation that you do not remember the password of any SAP user on a Java stack system you can activate the SAP* user. These are the steps that need to be followed:
The activation is done from configtool, that needs to switched to configuration editor mode:
And go to Configurations -> Cluster_config -> custom_global -> cfg -> services -> com.sap.security.core.ume.service -> Propertysheet properties
Hit the change button, as in the warning message, the system needs to be restarted while SAP* user is activated:
And here there are two configurations that we are interested in:
ume.superadmin.password – By default it is set to FALSE. In order to activate SAP* change it to TRUE
ume.superadmin.activated – If you do not remember the password of SAP* you can enter here a new one
After the restart of the Java system you can login with SAP* user and the password set in the previous step.
Be aware that during the time SAP* is activated the login of the other users is deactivated. So after you unlock, change the password of your user, you will have to deactivate SAP* user back and of course restart the system again, so the changes would take effect.