Yes, the logging was enabled in the QVW. I always assumed that that log was the same as on the reload server, but I see now that the QVW log file contains much more information, thank you.
In the log, I see that the reload failed becouse of a "General Script Error". Also it stops when trying to store a table into a QVD. It's unlikely that it's an actual script error since most of the time the QVW reloads successfully. And it's a weird place to stop if the database connection was lost, couse it fails after selecting ("74 fields found: ...) a large SAP table and when saving it into a QVD file.
Am I right to assume these pointers? But at least this log file helps alot.
25-10-2012 0:51:28: 4194 SQL SELECT [Long list of SAP tables]
25-10-2012 0:51:28: 4195 FROM EKBE
25-10-2012 0:51:37: 74 fields found: [List of the 74 fields] 2.293.736 lines fetched
25-10-2012 1:24:40: 4197 STORE EKBE INTO ..\..\Data\[Some QVD document path].QVD
25-10-2012 1:24:44: General Script Error
25-10-2012 1:24:44: Execution Failed
25-10-2012 1:24:44: Execution finished.
I don't think the select was the problem. After all, the log says 2.293.736 lines fetched. I'd assume that the error happened after that. It could be the store. You could check if the qvd file was created correctly by checking the file time and trying to load manually in a test qvw file. If that's all correct then the script error occurred after that. You'll have to see what statements are executed there.