I created an internal website for our company. It run smoothly for several months and then I made a major update due to user suggestion. When I run in live, it run normally. Then suddenly one of my user from japan sending me an "The Wait operation timed out." error. When I check access that certain link, It run normally for me and some other who I ask to check if they access that page. I already update the httpRuntime executionTimeout but still no luck. Is it the error come from database connection? If I increase the timeout in the database connection it will be fix the problem?
If you found the exact error "The wait operation timed out" then it is likely you have a database call that took longer than expected. This could be due to any number of things:
You haven't shared enough information to troubleshoot. The way I would manage this would be to check for other occurrences of the problem and see if there is a pattern, e.g. if the problem occurs at a certain time of day.
Certainly increasing the timeout is not a bad idea (if it is currently set pretty low) and may resolve the problem in and of itself.