I've investigated this and can't find the answer so I'm going to mark this one for development. If they don't get back to you or you don't hear from the community, post here again.
Maybe you mean executionTimeout attribute in web.config file. It set mamximu number of seconds a request is allowed to run before web server kill it. Default value is 90 seconds so if you want to enlarge timeout interval you shoudl find web.config in root folder of Orion web and insert in first <system.web> section:
where seconds set the timeout interval.
Hope it'll help you.
The one I was thinking of is the following, but this begs the question which one is used and if one has precedence over the other?
The file is SWNetPerfMon.db, also in the root folder. And the line to modify is:
! Database Command timeout in seconds
EDIT: Web.config is in the Inetpub Solarwinds root folder, and the SWNetPerfMon.db file is in the Orion Solarwinds root folder.
It is in the web.config file. You need to modify the time for
<httpRuntime maxRequestLength="16096" executionTimeout="600" />
So 600 seconds (or whatever you have) becomes 1000 seconds, for example.