Log file control system in a complex system

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395600, 3642818, 3647161, G06F 1740

Patent

active

054559472

ABSTRACT:
A log file control system is used in a complex system which includes a plurality of computer systems connected for communications. Additionally, the complex system includes a data base which is shared among the computer systems and a high-speed storage unit which is also shared among the computer systems. Further, a saving unit is present in each of the computer systems for saving log data, outputted by a transaction processed in the computer system, in a backout file for the computer system. A serializing unit in each of the computer systems exclusively obtains a log data buffer of the complex system, according to an inter-system exclusive control table, and transmits the serialized log data to the log data buffer. When the log data buffer issues a request for transmitting the data to a log file, an accumulating unit in the computer system transmits the data according to the request from the log data buffer. The log data is requested to be transmitted to the log file asynchronously with the transaction processes.

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