Database problem when upgrading from V0.09 to V1.07

[wlchen]

Currently we try to upgrade our Mantis from V0.09 to V1.07 , but get the the following message
Attempting to connect to database as admin: BAD (Does administrative user have access to the database? (Access denied for user: 'root@localhost' (Using password: YES))

Another thing is when I look at the configuration file config_inc.php, and we have the following setting
$g_port = 3306;
I check the Mantis manual, but cannot find anything about the configuration variable $g_port. Could this be the problem for the failed upgrading?

Thanks