How to cancel a long-running Database operation?

Question

Currently working with Oracle, but will also need a solution for MS SQL.

I have a GUI that allows users to generate SQL that will be executed on the database. This

Answer 1

KILL SESSION was the only working way for me to cancel the long running query. I am using the managed oracle provided and OracleCommand.Cancel() works some times but usually it's not working. Also OracleCommand.CommandTimeout is not respected according to my tests. Some time ago when i was using the unmanaged oracle provided i managed to cancel commands but not any more with the managed one. Any way killing the session was the only option. The query is not running on the UI thread but on a seperate thread. The cancel command is send from the UI thread. Its a little more complex because the application uses a middletier using WCF but at the end of the day i am killing the session. Of cource when running the query i have to find and save the session in order to kill it if necessary. There are many ways to find sid and serial# in order to kill the oracle session and i want waste your time explaining something you already know.