How do you reproduce bugs that occur sporadically?

Question

We have a bug in our application that does not occur every time and therefore we don\'t know its \"logic\". I don\'t even get it reproduced in 100 times today.

Disclaime

Answer 1

Along with a lot of patience, a quiet prayer & cursing you would need:

• a good mechanism for logging the user actions
• a good mechanism for gathering the data state when the user performs some actions (state in application, database etc.)
• Check the server environment (e.g. an anti-virus software running at a particular time etc.) & record the times of the error & see if you can find any trends
• some more prayers & cursing...

HTH.