I have an aspx page which contains code that is liable to take 5 minutes or more to execute on the server. So I need to extend the amount of time before the Request times ou
executionTimeout
Optional TimeSpan attribute. Specifies the maximum number of seconds that a request is allowed to execute before being automatically shut down by ASP.NET. This time-out applies only if the debug attribute in the compilation element is False. To help to prevent shutting down the application while you are debugging, do not set this time-out to a large value. The default is "00:01:50" (110 seconds).
ScriptTimeout
A default ScriptTimeout can be set for a Web service or Web server by using the AspScriptTimeout metabase property. The ScriptTimeout property cannot be set to a value less than that specified in the metabase. For example, if NumSeconds is set to 10, and the metabase setting contains the default value of 90 seconds, scripts will time out after 90 seconds. However, if NumSeconds were set to 100, the scripts would time out after 100 seconds.