Hello
If I forget the SAP* Passwrd @ DB level, then to login with SAP*(kernel). Does it mandatory to DELETE sap* @ DB level OR parameter login/no_automatic_user_sapstar = 0 is enough.
I already told you how the SAP* user works.
Read this link carefully.
http://help.sap.com/saphelp_nw70/helpdata/en/3e/cdacecedc411d3a6510000e835363f/content.htm
You can also deactivate the hard-coded user SAP* by activating the profile parameter login/no_automatic_user_sapstar. For more information, see SAP Note 68048.
If a user master record was created for SAP*, then the corresponding authorizations assigned will apply; they are not affected by this parameter's setting.
If the parameter login/no_automatic_user_sapstar = 0 and if you try to login to the system with SAP* user to a particular client when the user is present in the SAP system (USR02 database table) it will fail if you don't use the right password for the SAP* user. The parameter value is taken into consideration only if the user is not present in the table.
When the SAP* user is present in the USR02 and if you try to login to that client with SAP* and password PASS the system wont let you.
Regards
RB