Accurate completion of transaction in cooperative type distributed system and recovery procedure for same
October 25, 2016. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesDistributed multiprocess transaction processing system and method Transaction processing facility within an operating system environment Two-pass multi-version read consistency Fault-tolerant transaction-oriented data processing System for database integrity with multiple logs assigned to client subsets System and method for improving data recovery performance Consistent recreation of events from activity logs Method and a system for processing a log record Method and apparatus for block-level auditing and database recovery in a transaction processing system Log data management system having a plurality of processing units and a common memory Inventors
AssigneeApplicationNo. 737040 filed on 10/25/1996US Classes:707/202, Recoverability707/201, Coherency (e.g., same view to multiple users)714/15, State recovery (i.e., process or data file)714/20, Plural recovery data sets containing set interrelation data (e.g., time values or log record numbers)714/49, State error (i.e., content of instruction, data, or message)718/100TASK MANAGEMENT OR CONTROLExaminersPrimary: Lintz, Paul R.Assistant: Corrielus, Jean B. Attorney, Agent or FirmForeign Patent References
International ClassG06F 017/30Foreign Application Priority Data1995-02-28 JPAbstractThe transaction processing throughput of a system in which a plurality of servers cooperatively perform distributed processing of transactions is improved. The servers (1a, 1b, 1c, . . .) are connected to each other through a communication network (2), and a resources (16) and a log 18 are distributed over these servers. When one of the servers, e.g., the server (1a) receives a transaction, the server (1a) instructs the servers (1b, 1c, . . . ) over which the resource 16 relating to this transaction are distributed to update their resources, acquires the log data representing the updating contents and stores the log data in its log (18)The servers (1b, 1c, . . .) update the resources in accordance with the instruction. Even when a fault occurs in one of the servers (1b, 1c, . . .) during the transaction processing so that the updating of the resources has not been executed, the system assumes that all the resource has been updated and proceeds to processing the following transaction. The server in which the fault acquires the log data related to the failed transaction from the log (18) of the server (1a) after the server has restored from the fault, and correctly updates its own database (16) based on the log data. The log data storing method for the transaction processing, the log retrieving method for the recovery processing, and the method of judging whether or not the resources have been updated during the recovery processing are all improved and of high speed.Other References
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