PURPOSE: To attain a continuous operation as a whole by continuing a process with an optional processor module in a recovery process applying a shared memory.
CONSTITUTION: Each of plural processor modules PM 11i has a local memory 27 and a shared memory 10 is connected to these processor modules via buses. The memory 10 acquires a transaction log via a transaction log acquiring part 25. The transaction log shows the state of a transaction which gives an access to the resources of a data base that controls locally each module PM 11 via a local memory 27. At the same time, the log information on the update is acquired via an update log acquiring part 26 to the resources of the data base which is locally controlled by each PM 11 via the memory 27. When an optional PM 11 has abnormality, a recovery processing part 29 recovers the abnormality based on the transaction log and the update log of the memory 10. As a result, an optional PM 11 can continue a due process.
HAYASHI KATSUMI
SAITO KAZUHIKO
MITANI MASAAKI
SEKINE YUTAKA
SHIMOGAI YOSHINORI
| JPS62145349A | 1987-06-29 | |||
| JPS6230465A | 1987-02-09 |