root@xen-rt-4:/usr/share/request-tracker4# /usr/sbin/rt-setup-database-4  --prompt-for-dba-password --action upgrade
In order to create or update your RT database, this script needs to connect to your  mysql instance on localhost as postgres
Please specify that user's database password below. If the user has no database
password, just press return.

Password:
Working with:
Type:   mysql
Host:   localhost
Name:   /var/lib/dbconfig-common/sqlite3/request-tracker4/rtdb
User:   rt
DBA:    postgres
Enter RT version you're upgrading from: ^C