We are running a WCF service with Nhibernate and all of a sudden the following exception starts getting thrown:
NHibernate.TransactionException, NHibernate.
The stack trace shows:
NHibernate.Transaction.AdoTransaction.CheckNotZombied()
NHibernate.Transaction.AdoTransaction.Rollback()
Googling seems to bring up heaps about session management issues, however our problem was that the database log file was full.