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1. 发明专利

JP2008146516A Data read-ahead processing method for recorder 审中-公开
标题翻译：用于记录器的数据读取前处理方法
公开(公告)号：JP2008146516A
公开(公告)日：2008-06-26
申请号：JP2006335247
申请日：2006-12-13
申请人： Hitachi Ltd , Hitachi Software Eng Co Ltd , 日立ソフトウエアエンジニアリング株式会社 , 株式会社日立製作所
发明人： YOSHIHARA JUN , ENOMOTO SHINKI , OTAWARA MINORU , YAMAGUCHI KOTA
IPC分类号： G06F12/00 , G06F3/06
摘要： PROBLEM TO BE SOLVED: To quicken an access to a positionally discontinuous data arranged on a recorder.
SOLUTION: A retrieval system comprises a controller for controlling retrieval processing, and the recorder mounted with a read-ahead command for storing an assignment data in a cache memory built in the recorder. The controller indicates data read-ahead required in the next to the recorder, using the read-ahead command, during processing of the data, the recorder reads out the assigned data from a recording medium, to be stored into the cache memory, and the data is thereby read quickly from the recorder built in the recorder, without accessing the recording medium, when the controller reads the next data from the recorder. A hit rate of the cache memory is also enhanced to quicken the reading, by adding a priority and a protection flag to an area indicated and read by the read-ahead command to control efficiently the cache memory.
COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：要解决的问题：加快访问布置在记录器上的位置不连续的数据。解决方案：检索系统包括用于控制检索处理的控制器，并且安装有用于将分配数据存储在内置于记录器中的高速缓冲存储器中的预读命令的记录器。控制器在处理数据期间使用预读命令指示在记录器的下一个所需的预读数据，记录器从记录介质读出分配的数据以存储到高速缓冲存储器中，并且因此，当控制器从记录器读取下一个数据时，数据从记录器内置的记录器中快速读取，而无需访问记录介质。高速缓冲存储器的命中率也被增强，通过向预读命令指示和读取的区域添加优先级和保护标志来加快读取速度，以有效地控制高速缓冲存储器。版权所有（C）2008，JPO＆INPIT

2. 发明专利

JP2003006020A Duplicate data base access device and its accessing method 审中-公开
标题翻译：重复数据库访问设备及其访问方法
公开(公告)号：JP2003006020A
公开(公告)日：2003-01-10
申请号：JP2001192171
申请日：2001-06-26
申请人： Hitachi Ltd , Hitachi Software Eng Co Ltd , 日立ソフトウエアエンジニアリング株式会社 , 株式会社日立製作所
发明人： YAMAGUCHI KOTA , HAYASHI SHIGETOSHI , KATSUMATA JUNKO , ISHIKAWA TAICHI , YAMAKAWA HIROSHI
IPC分类号： G06F12/00 , G06F17/30
CPC分类号： G06F17/30575 , Y10S707/99938 , Y10S707/99952
摘要： PROBLEM TO BE SOLVED: To maintain consistency of a duplicate data base as continuing a transaction processing and to access a physical duplicate data base without changing an application program to access a data base at a duplicating origin when the physical duplicate data base is created by cutting off one of multiply written or duplicated data base areas on an external storage device. SOLUTION: When one of the multiply written or duplicated data base areas is cut off on the external storage device, a data base management system writes data at a state that the consistency is maintained in the external storage device and provides a means capable of controlling timing to cut off the duplicated data base areas. In addition, a new piece of physical definition information to be required for access to the duplicated data base is dynamically added based on the physical definition information of a data base at a duplicating origin and provides a means capable of selecting whether the data base on the duplicating origin is accessed or a data base at a duplicating destination is accessed is provided.
摘要翻译：要解决的问题：为了保持重复数据库的一致性，作为继续进行事务处理，并且在通过切割创建物理副本数据库时，不改变应用程序来访问复制源的数据库，访问物理副本数据库关闭外部存储设备上的多个写入或复制的数据库区域之一。解决方案：当外部存储设备上的一个多重写入或复制的数据库区域被切断时，数据库管理系统在一致性保持在外部存储设备中的状态下写入数据，并提供能够控制定时的装置以切断重复的数据库区域。另外，基于复制原点的数据库的物理定义信息动态地添加用于访问复制数据库所需的新的物理定义信息，并提供能够选择是否基于数据库的数据库的装置提供复制原点或访问复制目的地的数据库。

3. 发明专利

JP2010049697A Data processing apparatus and database management method 有权
标题翻译：数据处理设备和数据库管理方法
公开(公告)号：JP2010049697A
公开(公告)日：2010-03-04
申请号：JP2009235879
申请日：2009-10-13
申请人： Hitachi Ltd , Hitachi Software Eng Co Ltd , 日立ソフトウエアエンジニアリング株式会社 , 株式会社日立製作所
发明人： YAMAGUCHI KOTA , HAYASHI SHIGETOSHI , KATSUMATA JUNKO , ISHIKAWA TAICHI , YAMAKAWA HIROSHI
IPC分类号： G06F12/00 , G06F3/06
摘要： PROBLEM TO BE SOLVED: To keep consistency of a replicated database while continuing transaction processing when one of multi-written or replicated database areas in an external storage unit is separated to create a physical replicated database, and to enable the physical replicated database to be accessed without changing an application program accessing a replication source database. SOLUTION: When one of database areas multi-written or replicated in external storage units 108 to 109 is separated, a database management system 101 writes data in a consistent state into the external storage units 108 to 110 and controls timing of separating the replicated database area. Furthermore, new physical definition information necessary to access the replicated database is dynamically added on the basis of physical definition information of the replication source database and it is selected whether to access the replication source database or access the replicated database. COPYRIGHT: (C)2010,JPO&INPIT
摘要翻译：要解决的问题：为了在外部存储单元中的多个写入或复制的数据库区域之一分离以创建物理复制数据库并且启用物理复制数据库时，为了保持复制数据库的一致性，同时继续事务处理在不更改访问复制源数据库的应用程序的情况下进行访问。解决方案：当外部存储单元108至109中多重写入或复制的数据库区域之一被分离时，数据库管理系统101以一致的状态将数据写入外部存储单元108至110中，并且控制分离复制数据库区。此外，基于复制源数据库的物理定义信息动态添加访问复制数据库所需的新物理定义信息，并选择是访问复制源数据库还是访问复制数据库。版权所有（C）2010，JPO＆INPIT

4. 发明专利

JP2004318288A Method and device for processing data and its processing program 审中-公开
公开(公告)号：JP2004318288A
公开(公告)日：2004-11-11
申请号：JP2003108361
申请日：2003-04-11
申请人： Hitachi Ltd , Hitachi Software Eng Co Ltd , 日立ソフトウエアエンジニアリング株式会社 , 株式会社日立製作所
发明人： KITAMURA KENICHI , MIYAZAKI MITSUO , YAMAGUCHI KOTA , YAMAKAWA HIROSHI
IPC分类号： G06F12/00 , G06F7/00 , G06F17/30
CPC分类号： G06F17/30575 , Y10S707/99953
摘要： PROBLEM TO BE SOLVED: To provide a technology capable to execute predetermined processing while continuing database processing as much as possible.
SOLUTION: This data processing method comprises a step for switching a database being the target of operation from a main database to a duplicated database, a step for executing predetermined processing to the main database which is not the target of operation any more according to the switching, a step for executing database processing by assigning a database access request to the duplicated database which becomes the target of operation according to the switching, a step for outputting update information showing the contents of update processing executed to the duplicated database, a step for reflecting the outputted update information on the main database to which the predetermined processing has been executed and a step for switching the data base being the target of operation from the duplicated database to the main database.
COPYRIGHT: (C)2005,JPO&NCIPI

5. 发明专利

JP2005339236A Database management method and database system 有权
标题翻译：数据库管理方法和数据库系统
公开(公告)号：JP2005339236A
公开(公告)日：2005-12-08
申请号：JP2004157619
申请日：2004-05-27
申请人： Hitachi Ltd , Hitachi Software Eng Co Ltd , 日立ソフトウエアエンジニアリング株式会社 , 株式会社日立製作所
发明人： KAMATA YASUHIRO , KAWAMURA NOBUO , KATSUMATA JUNKO , YAMAGUCHI KOTA , TODA KEISUKE
IPC分类号： G06F12/08 , G06F7/00 , G06F12/00 , G06F15/177 , G06F17/30
CPC分类号： G06F17/30575 , Y10S707/99953
摘要： PROBLEM TO BE SOLVED: To improve performance suitable to the number of increased nodes, even when a table of high frequency of reference cannot be re-arranged, in a database system where each of a plurality of database management nodes can only access an allocated data area.
SOLUTION: A data storage area for storing the table of high frequency of reference inside an external storage apparatus 9 allocated to the plurality of database management nodes 4b to 4d is set as a common data area 10c which can be referred to by the plurality of nodes and controlled so that a common table 3c inside the common data area 10c can be referred to, in parallel with an arbitrary timing from an arbitrary node. Thus, it is possible to prevent loads from concentrating on the node to which the data area is allocated.
COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：为了提高适合于增加节点数量的性能，即使当高频率的参考表不能重新布置时，在数据库系统中，多个数据库管理节点中的每一个只能访问分配的数据区域。解决方案：将分配给多个数据库管理节点4b至4d的外部存储装置9内的高频率参考表存储的数据存储区域设置为公共数据区域10c，其可以由多个节点并被控制，使得公共数据区域10c内的公用表3c可以与来自任意节点的任意定时并行地参考。因此，可以防止负载集中在分配有数据区域的节点上。版权所有（C）2006，JPO＆NCIPI

6. 发明专利

JP2004303025A Information processing method, its execution system, its processing program, disaster recovery method and system, storage device for executing the processing, and its control processing method 有权
公开(公告)号：JP2004303025A
公开(公告)日：2004-10-28
申请号：JP2003096725
申请日：2003-03-31
申请人： Hitachi Ltd , Hitachi Software Eng Co Ltd , 日立ソフトウエアエンジニアリング株式会社 , 株式会社日立製作所
发明人： KAWAMURA NOBUO , YAMAGUCHI KOTA , OEDA TAKASHI
IPC分类号： G06F3/06 , G06F11/14 , G06F11/20 , G06F12/00
CPC分类号： G06F11/2074 , G06F11/2076 , Y10S707/99953
摘要： PROBLEM TO BE SOLVED: To provide a technology for constructing a system for facilitating countermeasures to a disaster where the performance deterioration of an active system is reduced. SOLUTION: When a writing request received from a host computer is the writing request of log information, the simultaneous writing processing of the log information in the sub-storage device sub-system of a stand-by system is executed, and when the received writing request is the writing request of data base data or status information, the writing request is temporarily stored, and asynchronous writing processing in the sub-storage sub-system is executed. Also, the update of the log information in the sub-storage device sub-system and the data and status information of the data base area is executed according to the contents of the writing request received from a master storage device sub-system, and the data base area is restored according to the contents of the log information from the position shown by the status information. COPYRIGHT: (C)2005,JPO&NCIPI

7. 发明专利

JP2004078974A Data storage control method and data processing system 审中-公开
公开(公告)号：JP2004078974A
公开(公告)日：2004-03-11
申请号：JP2003303958
申请日：2003-08-28
申请人： Hitachi Ltd , Hitachi Software Eng Co Ltd , 日立ソフトウエアエンジニアリング株式会社 , 株式会社日立製作所
发明人： KASAO HIDEAKI , TODA KEISUKE , YAMAGUCHI KOTA , MASAI KAZUO , HIROHATA KIYOMI
IPC分类号： G06F3/06 , G06F12/00 , G06F17/30
摘要： PROBLEM TO BE SOLVED: To provide a division method of parallel data base which efficiently performs works in accordance with the change of the divided number of data bases and its management system in a parallel data base management system which divides the data base.
SOLUTION: An access request to the data base is generated from a business program, whether the request is storage or retrieval is first determined, when the request is storage, the management number of an external storage device for storing records is calculated by using a hash function and the records are stored in the external storage device according to the management number. When the request is retrieval, all the divided external storage devices are retrieved in parallel without using the hash function.
COPYRIGHT: (C)2004,JPO

8. 发明专利

JP2003036189A Method and device for managing data storage area 审中-公开
标题翻译：用于管理数据存储区域的方法和设备
公开(公告)号：JP2003036189A
公开(公告)日：2003-02-07
申请号：JP2002205000
申请日：2002-07-15
申请人： Hitachi Ltd , Hitachi Software Eng Co Ltd , 日立ソフトウエアエンジニアリング株式会社 , 株式会社日立製作所
发明人： IWAMOTO TAKATOSHI , YAMAGUCHI KOTA , MURAGATA YASUSHI
IPC分类号： G06F12/00
摘要： PROBLEM TO BE SOLVED: To reduce the influence of the shortage of a free space by asynchronously and automatically expanding a file by another processing process while continuing a record operation job in a conventional space when the free space in the file becomes equal to or smaller than a fixed quantity.
SOLUTION: A file expansion chance detection means 3 monitors a remaining free space quantity in a file 22 as the expansion of a record operation means 2 and when the remaining free space quantity becomes equal to or smaller than a fixed space quantity registered by a file expansion information registering means 1, the means 3 requests the automatic expansion of a file to a file asynchronous expansion means 4. The expansion means 4 prepares new space management information 43 by a processing process 62 different from a record operation means 2 to perform the expansion of a space and initialization of the expanded space.
COPYRIGHT: (C)2003,JPO
摘要翻译：要解决的问题：通过在文件中的空闲空间等于或小于等于或小于另一处理过程的同时在传统空间中继续记录操作作业时通过异步地自动扩展文件来减少可用空间不足的影响固定数量。解决方案：文件扩展机会检测装置3监视文件22中的剩余可用空间量作为记录操作装置2的扩展，并且当剩余可用空间数量变得等于或小于通过文件扩展登记的固定空间数量时信息登记装置1，装置3请求文件自动扩展到文件异步扩展装置4.扩展装置4通过与记录操作装置2不同的处理过程62准备新的空间管理信息43，以执行扩展扩展空间的空间和初始化。

9. 发明专利

JP2006004147A Disaster recovery system, program and method for recovering database 有权
标题翻译：灾难恢复系统，恢复数据库的程序和方法
公开(公告)号：JP2006004147A
公开(公告)日：2006-01-05
申请号：JP2004179433
申请日：2004-06-17
申请人： Hitachi Ltd , Univ Of Tokyo , 国立大学法人東京大学 , 株式会社日立製作所
发明人： SUZUKI YOSHIO , KAWAMURA NOBUO , YAMAGUCHI KOTA , FUJIWARA SHINJI , WATANABE SATOSHI , KIREGAWA MASARU
IPC分类号： G06F12/00 , G06F3/06
CPC分类号： G06F11/2028 , G06F11/2025 , G06F11/2097
摘要： PROBLEM TO BE SOLVED: To reduce an operation management cost in a usual mode while maintaining the recovery of a deficit-free database and the online performance of a site. SOLUTION: A first system is comprised of a main storage 103 storing a DB (Data Base) 107 and a main computer 100 running a main DBMS (Data Base Management System) 101 providing the DB. A second system includes a sub storage 113 receiving the copy of a log indicative of the update difference of the DB 107 from the main storage 103 and storing a sub-DB 117, and a subset 500 recovering the sub-DB 117 based on the log copied from the main storage 103. When the first system fails, the first system is switched to the second system, and a second computer 110 operating a second DBMS 111 is added to the second system. Then, the second computer 110 takes over the sub-DB 117 recovered or under recovery in the subset 500. COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：在保持无赤字数据库的恢复和站点的在线性能的同时，降低通常模式下的操作管理成本。解决方案：第一系统包括存储DB（数据库）107的主存储器103和运行提供DB的主DBMS（数据库管理系统）101的主计算机100。第二系统包括子存储器113，其接收指示DB 107与主存储器103的更新差异并存储子DB 117的日志的副本，以及基于日志恢复子DB 117的子集500 复制自主存储器103.当第一系统发生故障时，第一系统被切换到第二系统，并且将操作第二DBMS 111的第二计算机110添加到第二系统。然后，第二计算机110接管在子集500中恢复或恢复的子DB 117。（C）版权所有（C）2006，JPO＆NCIPI

10. 发明专利

JP2006048103A Disaster recovery system, program, and duplication method of data 有权
标题翻译：数据恢复系统，程序和重用方法
公开(公告)号：JP2006048103A
公开(公告)日：2006-02-16
申请号：JP2004223776
申请日：2004-07-30
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： SUZUKI YOSHIO , KAWAMURA NOBUO , YAMAGUCHI KOTA , WATANABE SATOSHI , FUJIWARA SHINJI
IPC分类号： G06F12/00 , G06F13/10
CPC分类号： G06F11/2097 , G06F11/1471
摘要： PROBLEM TO BE SOLVED: To increase the added value of a DR system and make the operation of a secondary site easy by creating a backup having consistency in transaction level and providing a business on the secondary site. SOLUTION: A secondary DB 117 is recovered by a log 106 including the update difference of a primary DB 107. A command is added to the log 106, and the log is analyzed at a secondary site 2 to execute the command. An operation command is transferred through the log and executed, and consequently the operation command is executed to a DB having consistency in transaction at the secondary site 2 in the same timing as a primary site 1 or in intended timing. When the command instructs to generate a snap shot, a plurality of volumes of a mirror set 350 constituting a secondary storage device 113 are brought to a pair state, and the secondary DB 117 is written to each volume to synchronize the volumes. After the synchronization is completed, the mirror set 350 is brought to a split state to store a secondary DB 118. COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：为了增加DR系统的附加值，并通过创建备份在事务级别上保持一致性并在辅助站点上提供业务，从而使辅助站点的操作变得容易。解决方案：辅助DB 117由包括主DB 107的更新差异的日志106恢复。将命令添加到日志106，并且在次要站点2处分析日志以执行命令。操作命令通过日志传送并被执行，因此在次要站点2处于与主站点1相同的定时或预期定时的操作命令被执行到与次站点2处的事务一致的DB。当命令指示产生快照时，构成辅助存储设备113的多个镜像组350的卷成为一对状态，并且将辅助DB 117写入每个卷以使卷同步。在完成同步之后，将反射镜组350进入分离状态以存储辅助DB 118.版权所有（C）2006，JPO＆NCIPI

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