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    • 3. 发明授权
    • Accurate completion of transaction in cooperative type distributed
system and recovery procedure for same
    • 准确完成合作型分布式系统的交易和恢复程序
    • US6052695A
    • 2000-04-18
    • US737040
    • 1996-10-25
    • Kenichi AbeYukiharu ImafukuHitoshi KiritaToshiyuki InoueHiroaki TakahashiYoji ShigehataYuichi KonnoKazuaki NarataTadao Odanaka
    • Kenichi AbeYukiharu ImafukuHitoshi KiritaToshiyuki InoueHiroaki TakahashiYoji ShigehataYuichi KonnoKazuaki NarataTadao Odanaka
    • G06F11/14G06F17/30
    • G06F11/1471Y10S707/99952Y10S707/99953
    • The 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.
    • PCT No.PCT / JP96 / 00440 Sec。 371日期1996年10月25日第 102(e)日期1996年10月25日PCT 1996年2月27日PCT公布。 WO96 / 27157 PCT公开号 日期1996年9月6日提高了多个服务器协同执行事务的分布式处理的系统的事务处理吞吐量。 服务器(1a,1b,1c ...)通过通信网络(2)彼此连接,资源(16)和日志18分布在这些服务器上。 当服务器(1a)中的一个服务器(1a)接收到一个事务时,服务器(1a)指示与该事务相关的资源16被分配的服务器(1b,1c ...)来更新它们的资源, 获取表示更新内容的日志数据并将日志数据存储在其日志中(18)。服务器(1b,1c ...)根据该指令更新资源。 即使在事务处理期间在一个服务器(1b,1c ...)中发生故障,使得资源的更新尚未被执行,则系统假定所有资源已被更新,并且继续处理 以下交易。 在服务器从故障恢复之后,故障从服务器(1a)的日志(18)获取与故障事务相关的日志数据的服务器,并且基于日志数据正确地更新其自己的数据库(16) 。 用于事务处理的日志数据存储方法,用于恢复处理的日志检索方法以及在恢复处理期间判断资源是否被更新的方法都被改进并且具有高速度。