UDA files in temp folder / searching for infos

[Sunchaser]

Dear all,

I see a temp file which name beginning like UDAxxxxx in the temp file of Cognos, and I would like to undertand a little bit more about these files.
What is it for ?
How can we manage them ?

What is strange to me is that this file contains the strings generated by 2 important SQL, strings that are used in a report.
The most important for me: when this file doesn't exist and that the report is running for the first time by a user -> the result is a blank page.
Then if the report is run again, or refreshed simply, the file is just updated and the report is running fine.


What about these UDA files ? How can we "control" them ?

Thanks.