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    • 2. 发明授权
    • Backup system for data base
    • 数据库备份系统
    • US07587430B2
    • 2009-09-08
    • US11405464
    • 2006-04-18
    • Yoshio SuzukiNobuo KawamuraSatoru WatanabeShinji FujiwaraKazuhiko Mizuno
    • Yoshio SuzukiNobuo KawamuraSatoru WatanabeShinji FujiwaraKazuhiko Mizuno
    • G06F17/30
    • G06F11/2048G06F11/2097G06F2201/80Y10S707/99952Y10S707/99953
    • Database synchronization processing is completed within a reasonable time, using narrow-band network that connects a primary site to a secondary site, to reduce the running cost of a system. A primary DBMS has a transaction executing unit for reading a primary DB of a primary storage system to update data as requested in an update request, and a write unit for writing the updated data in the primary storage system. The primary storage system includes an unnecessary information removing unit for overwriting an unused area in the written data successively with one of a preset character and a preset value. The primary storage system is connected, via a network, to a second storage system which stores a copy of the primary DB. The primary storage system is connected to the network via a network device which has a data compression unit for compressing a succession of the same value.
    • 数据库同步处理在合理的时间内完成,使用将主站点连接到辅助站点的窄带网络,以降低系统的运行成本。 主DBMS具有交易执行单元,用于读取主存储系统的主DB以根据更新请求中的请求更新数据;以及写单元,用于在主存储系统中写入更新的数据。 主存储系统包括不必要的信息删除单元,用于以预设字符和预设值中的一个连续地写入写入数据中的未使用区域。 主存储系统经由网络连接到存储主DB的副本的第二存储系统。 主存储系统经由具有用于压缩相同值的连续数据的数据压缩单元的网络装置连接到网络。
    • 3. 发明申请
    • Backup system for data base
    • 数据库备份系统
    • US20070203958A1
    • 2007-08-30
    • US11405464
    • 2006-04-18
    • Yoshio SuzukiNobuo KawamuraSatoru WatanabeShinji FujiwaraKazuhiko Mizuno
    • Yoshio SuzukiNobuo KawamuraSatoru WatanabeShinji FujiwaraKazuhiko Mizuno
    • G06F17/30
    • G06F11/2048G06F11/2097G06F2201/80Y10S707/99952Y10S707/99953
    • Database synchronization processing is completed within a reasonable length of time while employing a narrow-band network as a network that connects a primary site to a secondary site, to thereby reduce the running cost of a system. A primary DBMS (101) has a transaction executing unit (104) for reading a primary DB (119) of a primary storage system (110) to update data as requested in an update request, and a write unit (106) for writing the updated data in the primary storage system (110). The primary storage system (110) includes an unnecessary information removing unit (1400) for overwriting an unused area in the written data successively with one of a preset character and a preset value. The primary storage system (110) is connected, via a network (320), to a second storage system (120) which stores a copy of the primary DB (119). The primary storage system (110) is connected to the network (320) via a network device (140) which has a data compression unit for compressing a succession of the same value.
    • 数据库同步处理在合理的时间长度内完成,同时采用窄带网络作为将主站点连接到辅助站点的网络,从而降低系统的运行成本。 主DBMS(101)具有交易执行单元(104),用于读取主存储系统(110)的主DB(119)以更新请求中的请求更新数据;以及写单元(106),用于写入 主存储系统(110)中的更新数据。 主存储系统(110)包括不必要的信息删除单元(1400),用于以预设字符和预设值中的一个连续地重写所写入的数据中的未使用区域。 主存储系统(110)经由网络(320)连接到存储主DB(119)的副本的第二存储系统(120)。 主存储系统(110)经由网络设备(140)连接到网络(320),网络设备(140)具有用于压缩相同值的一系列的数据压缩单元。
    • 4. 发明授权
    • System and method of disaster recovery
    • 灾难恢复系统和方法
    • US07860824B2
    • 2010-12-28
    • US11802186
    • 2007-05-21
    • Yoshio SuzukiNobuo KawamuraShinji FujiwaraSatoru WatanabeKazuhiko Mizuno
    • Yoshio SuzukiNobuo KawamuraShinji FujiwaraSatoru WatanabeKazuhiko Mizuno
    • G06F7/00
    • G06F11/2082G06F11/2074G06F17/30368G06F2201/855
    • In a DR system, from the viewpoint of device cost, when search is not carried out, a physical application where log recovery is available by inexpensive DB appliance server is adopted. Further, a local mirror operation at a secondary site is not carried out. Furthermore, from the viewpoint of operation, by a log apply function unit, the tendencies of a log application and operations are monitored, and a search process is accepted according to the progress conditions of the log application. When the log application does not catch up sufficiently, the search is not accepted. Moreover, when a consistency guarantee of a secondary DB is made, not transactions in process at the moment of search instruction are undone (rolled back), but only transactions in process at the moment of a search instruction are redone (rolled forward).
    • 在DR系统中,从设备成本的观点来看,当不进行搜索时,采用廉价DB设备服务器可以进行日志恢复的物理应用。 此外,不执行次要站点处的本地镜像操作。 此外,从操作的观点来看,通过日志应用功能单元,监视日志应用和操作的倾向,并且根据日志应用的进度条件接受搜索处理。 当日志应用程序没有足够的赶上时,搜索不被接受。 此外,当辅助DB的一致性保证被做出时,不是在搜索指令的时刻处理的事务被撤销(回滚),而是仅仅在搜索指令的时刻重新进行正在进行的事务。
    • 5. 发明授权
    • Data duplication method in a disaster recovery system
    • 灾难恢复系统中的数据复制方法
    • US07529964B2
    • 2009-05-05
    • US10930832
    • 2004-09-01
    • Yoshio SuzukiNobuo KawamuraKota YamaguchiSatoru WatanabeShinji Fujiwara
    • Yoshio SuzukiNobuo KawamuraKota YamaguchiSatoru WatanabeShinji Fujiwara
    • G06F11/00
    • G06F11/2097G06F11/1471
    • A recovery of a secondary DB is executed by a log including a update difference of a primary DB, and a command is executed by adding the command to the log and analyzing the log by a secondary site. An operation command execution in the secondary site is applied to the DB having the consistency in the transaction at the same timing as a primary site or an intended timing, by transferring and executing the operation command via the log. In the case that the command is constituted by a snap shot generating instruction, a plurality of volumes of a mirror set forming a secondary storage apparatus are set to a pair state and the secondary DB is written in each of the volumes and synchronized, and the mirror set is set to a split state after the synchronization is finished, whereby a secondary DB is stored.
    • 辅助DB的恢复由包括主DB的更新差异的日志执行,并且通过将命令添加到日志并通过辅助站点分析日志来执行命令。 通过经由日志传送和执行操作命令,在辅助站点中的操作命令执行以与主站点相同的定时或预期定时被应用于事务中具有一致性的DB。 在命令由快照生成指令构成的情况下,形成副存储装置的多个镜像组的集合被设置为成对状态,并且辅助DB被写入每个卷并同步,并且 镜像集在同步完成后设置为分割状态,从而存储辅助数据块。
    • 7. 发明申请
    • Disaster recovery system suitable for database system
    • 灾难恢复系统适用于数据库系统
    • US20050283504A1
    • 2005-12-22
    • US10989398
    • 2004-11-17
    • Yoshio SuzukiNobuo KawamuraKota YamaguchiShinji FujiwaraSatoru WatanabeMasaru Kitsuregawa
    • Yoshio SuzukiNobuo KawamuraKota YamaguchiShinji FujiwaraSatoru WatanabeMasaru Kitsuregawa
    • G06F12/00
    • G06F11/2028G06F11/2025G06F11/2097
    • To reduce operational and management costs during normal operations while recovering a database without loss and maintaining on-line performance on a site. A first system includes a primary storage system (103) that stores a DB (107) and a main computer (100) that executes a primary DBMS (101), which provides a DB. A second system includes a secondary (113) that receives from the primary storage system (103) a copy of a log, which shows update differences of the DB (107), and stores a secondary DBMS (117), and a subset (500) that recovers the secondary DB (117) according to the log that is copied from the primary storage system (103). When a failure occurs in the first system, the first system is switched to the second system. A second computer (110) that executes a second DBMS (111) is added to the second system, and the secondary DB (117) that is recovered or is being recovered in the subset (500) is taken over to the second computer (110).
    • 在正常运行期间降低运营和管理成本,同时在不丢失数据库的情况下恢复数据库并维护站点上的在线性能。 第一系统包括存储DB(107)的主存储系统(103)和执行提供DB的主DBMS(101)的主计算机(100)。 第二系统包括次级(113),其从主存储系统(103)接收日志的副本,其显示DB(107)的更新差异,并存储辅助DBMS(117)和子集(500) ),其根据从主存储系统(103)复制的日志恢复辅助DB(117)。 当第一系统发生故障时,第一个系统切换到第二个系统。 执行第二DBMS(111)的第二计算机(110)被添加到第二系统,并且在子集(500)中恢复或正在恢复的辅助DB(117)被接管到第二计算机(110) )。
    • 10. 发明授权
    • Exclusive control method for database and program
    • 数据库和程序的独占控制方法
    • US08131679B2
    • 2012-03-06
    • US11819310
    • 2007-06-26
    • Satoru WatanabeYoshio SuzukiShinji FujiwaraNobuo Kawamura
    • Satoru WatanabeYoshio SuzukiShinji FujiwaraNobuo Kawamura
    • G06F17/30
    • G06F17/30595G06F17/30362G06F17/30368
    • A technology capable of preventing a problem which occurs when log writing of a preceding transaction fails while reducing waiting time of a subsequent transaction is provided. A database control method for releasing locking of data held by a transaction upon reception of a transaction completion instruction from an operation terminal or the like by a database is provided. The database includes an exclusive control module, a log output module, and a log buffer. The log output module stores a transaction completion log in the log buffer upon reception of the transaction completion instruction from the operation terminal. The exclusive control module releases locking held by the transaction upon reception of storage of the transaction completion log in the log buffer.
    • 提供一种能够防止在前一事务的日志写入失败同时减少后续事务的等待时间时发生的问题的技术。 提供了一种数据库控制方法,用于在从数据库的操作终端等接收到交易完成指令时释放由交易持有的数据的锁定。 该数据库包括独占控制模块,日志输出模块和日志缓冲区。 日志输出模块在从操作终端接收到交易完成指令时将事务完成日志存储在日志缓冲器中。 独占控制模块在接收到日志缓冲区中的事务完成日志的存储时释放由事务保持的锁定。