dont have any idea if you are on windows or unix plateform.
for windows, consider first stopping the service and than do so.
you might want to put files in the appropriate folder/directory. so give path too in the file name. on windows it would be like D:\Oracle\ora920\database or on unix it should be like $ORACLE_HOME/dbs
you dont need to use "quotes" for password
QUOTE (mfran2002 @ Mar 14 2007, 03:31 PM)

so, to reassign "sys" password i use:
orapwd file=pwddb.ora password="newpwd"
is it right?
i do specify user "sys" or not?