Lately I've been having occasional issues with the ASP State database locking up and, while imagining theories on why this would happen, I wondered whether timers use up sessions and, if they do, if the session database transaction remains open for the full duration of the timer?

Does anyone know the answer?

Hi João,

A timer is just like any user and runs in its own session. This session is only released after the timer finishes and the session cleanup process of IIS runs.

Please check the following site and check if the approved answer could help you out.

Kind regards,