Well… I am not sure to understand how you reached this state.
The full privilege administrator of a LibreSource platform must be named "root". You could find (maybe too) many information into the
BUILD.txt file.
Please drop you database, recreate it and start JOnAS with the brand new database. You will be able to access to LibreSource via your Web browser, to register a new "root" user and then to bootstrap.
Please tell us about your progress.