Abstract: A method and apparatus for avoiding a transaction rollback is provided. The method includes, at a predetermined checkpoint in a currently executing business process, determining the current service, and determining at least one service in subsequent processes of the checkpoint. The status of at least one unavailable service in the at least one service included in the subsequent processes of the checkpoint is queried. Whether the transaction can be fulfilled is determined, based on the at least one unavailable service. The execution of the transaction is stopped in response to a judgment that the transaction cannot be fulfilled.

Abstract: A method and apparatus for avoiding a transaction rollback is provided. The method includes determining, by a service status check unit, whether at least one available path exists through a logic flow during an execution of a transaction. The service status check unit forecasts a successful logic flow completion on the determining the existence of at least one available path through the logic flow. The transaction is terminated, based on there being no available path through the logic flow.

Abstract: A structural arrangement of superconducting composites is provided to protect their superconductivity in such a way that these composites are electrically connected in a certain manner. The invention may be practiced with any desired superconducting material, and bismuth based superconducting materials are preferred. The shape and size of the superconducting composites may vary.

Abstract: A superconducting composite is fabricated by coating a wire or tape substrate with fine superconducting precursor powders followed by a sintering operation. A superconductor may also be prepared by further rolling. Several superconducting composites may be twisted together to obtain a multi-filamentary wire and sheathed by a silver foil or tube, at least partly open along the length.