Ived been having a problem with one of my old applications, its been working fine for the last 2 years or so, and today it crashed with the following:

This OracleTransacti on has completed; it is no longer usable

Im completely lost here, i have no idea whats going on, i believe its not the application since its been working fine for a while, but there still might be something im missing. Maybe someone can help out on...