oradocORA-02041: client database did not begin a transaction
Cause: An update occurred at a coordinated database without the coordinator beginning a distributed transaction. This may happen if a stored procedure commits and then performs updates, and the stored procedure is invoked remotely. It could also happen if an external transaction monitor violates the XA protocol.

Action: If the cause is the former, check that any commit is not followed by an update.

А вообще надо было это спрашивать в другую ветку ;)
И сабж должен был быть: "Oracle, transaction" или чё-то подобное :)