Re: [Zope-dev] deciding whether to do work in tpc_vote or tpc_finish

This is intended as a broad response to the thread, rather than a response to any specific post. :) I've been thinking of expanding the data manager API to add an optional tpc_rollback method. If tpc_finish returns a value and a data manager provided tpc_rollback and some other data manager fails in tpc_finish, then tpc_rollback would be used to *try* to recover from the other data managers failure. Note that even if tpc_rollback is implemented, it might fail if the transaction can't be rolled back (due, typically, to subsequent conflicting transactions). Jim -- Jim Fulton