Wat i understood from your question is u need to delete(clear) the password of all users in your data base. For tat here is the routine.
PROGRAM USER1.RTN
$INSERT I_COMMON
$INSERT I_EQUATE
$INSERT I_F.USER
F.USER = 'F.USER'
F.V = ''
CALL OPF(F.USER,F.V)
SEL = "SELECT ":F.USER
CALL EB.READLIST(SEL,SEL.LIST,'',SEL.CNT,ERR)
LOOP
REMOVE U.ID FROM SEL.LIST SETTING POS
WHILE POS:U.ID
READ R.REC FROM F.V,U.ID THEN
R.REC<33> = ''
WRITE R.REC TO F.V,U.ID
END
REPEAT
RETURN
END