Fatal db error, but no info in sugarcrm.log

Question

Hi, 
 An exception happened: (500: db_error) Database failure. Please refer to sugarcrm.log for details. 
 But this is the only line in the sugarcrm.log file I see. Where to start debugging this issue? 
 Regards, 
 Stijn

Stijn Vermeulen · Accepted Answer

In general 500 errors are logged in your PHP log. See if you can look at your PHP log and find the information you need. I suspect you have an error in the formulation of a query, or, if you can't access your application at all, a problem with your database connection. 
 If you can get to your Administration module, you can also set your log level to "Debug" from the Admin->System Settings panel and then check your sugar log again (you will get a LOT of information). 
 FrancescaS