Make sure your credentials on the Oracle side is correct. Is the account which runs Qlikview Server set up in the oracle database? If not, you'll have to add it or change the username which the server runs as.
I added the special server account a user CAL. I can now reload the document using Qlikview desktop on the server but it still wont reload from the management or enterprise management console? It just changes the button text to abort reload and doesn't appear to do any reloading?
Make sure the user has rights for the specific qvw file. Right click on the QVW->Properties then check if the account is listed in the security tab.
Edit: And you could also check the log that is generated in the Enterprise console to see what's up. To do that go to the task overview, select the task and click "Show task details" followed by "Log". If it mentions something about NT Security/Username or something then it's probably that the account doesn't have the rights to read/write to the QVW file. Otherwise, please post both the QVW log file and the management console log.