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    Multi-volume audit trails for fault tolerant computers
    5.
    发明授权
    Multi-volume audit trails for fault tolerant computers 失效
    容错计算机的多卷审计跟踪

    公开(公告)号：US6041420A

    公开(公告)日：2000-03-21

    申请号：US34199

    申请日：1998-03-03

    申请人： Michael J. Skarpelos ,  Robbert van der Linden ,  William J. Carley ,  James M. Lyon ,  Matthew C. McCline

    发明人： Michael J. Skarpelos ,  Robbert van der Linden ,  William J. Carley ,  James M. Lyon ,  Matthew C. McCline

    IPC分类号： G06F11/14 ,  G06F11/34

    CPC分类号： G06F11/1474 ,  G06F2201/80

    摘要： A fault tolerant computer system distributes audit trail files containing audit records, across an arbitrary number of disk volumes. After one audit trail file becomes full, audit records are directed toward a next audit trail file stored on a different disk volume. Storage of newly generated audit rotates through the disk volumes in round-robin fashion. Full audit trail files are eventually archived and their space becomes available again for renaming and storage of newly generated audit records. The number of audit records available for on-line recovery after a failure is not limited to the storage capacity of any single disk volume. Furthermore, there is no contention for disk access between archiving of full audit trail files and storage of newly generated audit records.

    摘要翻译： 容错计算机系统将包含审计记录的审计跟踪文件分布在任意数量的磁盘卷中。 在一个审计跟踪文件变满之后，审核记录将针对存储在不同磁盘卷上的下一个审计跟踪文件。 新生成的审核的存储以循环方式旋转通过磁盘卷。 完整的审计跟踪文件最终被归档，并且它们的空间可用于重新命名和存储新生成的审计记录。 故障后可用于在线恢复的审核记录数不限于任何单个磁盘卷的存储容量。 此外，对归档完整的审计跟踪文件和存储新生成的审计记录之间的磁盘访问没有争议。

    Method and apparatus for preventing inadvertent changes to system-critical files in a computing system
    6.
    发明授权
    Method and apparatus for preventing inadvertent changes to system-critical files in a computing system 失效
    用于防止在计算系统中无意中更改系统关键文件的方法和装置

    公开(公告)号：US5978914A

    公开(公告)日：1999-11-02

    申请号：US377385

    申请日：1995-01-23

    申请人： William J. Carley ,  James M. Lyon ,  Matthew C. McCline ,  Michael J. Skarpelos

    发明人： William J. Carley ,  James M. Lyon ,  Matthew C. McCline ,  Michael J. Skarpelos

    IPC分类号： G06F12/00 ,  G06F1/00 ,  G06F21/00 ,  G06F21/24 ,  G06F11/34

    CPC分类号： G06F21/54

    摘要： System-critical files are protected from being inadvertently modified or deleted by placing them in a Reserve name space of storage that requires any process seeking modifying access to the Reserve name space to have a "Right" to do so. The right to modifying access is garnered by a process first making a call to a system library procedure that causes a memory-stored data structure associated with the calling process to be modified, identifying the process as one with a Right to make modifying access to the Reserve name space. Any attempt to modify, delete, or create any file residing in the Reserve name space without the Right will be refused.

    摘要翻译： 系统关键文件被保护不被无意间修改或删除，将它们放置在存储空间的保留名称空间中，该存储空间需要任何进程寻求修改对保留名称空间的访问权限以使其具有“正确”权限。 修改访问权是由一个进程首先调用系统库过程而获得的，该过程会导致与调用进程关联的内存存储的数据结构被修改，将进程识别为具有修改对该访问权限的权限 保留名称空间。 任何企图修改，删除或创建任何没有权限的保留名称空间中的文件将被拒绝。

    Multi-volume audit trails for fault tolerant computers
    7.
    发明授权
    Multi-volume audit trails for fault tolerant computers 失效
    容错计算机的多卷审计跟踪

    公开(公告)号：US5764879A

    公开(公告)日：1998-06-09

    申请号：US688629

    申请日：1996-07-29

    申请人： Michael J. Skarpelos ,  Robert van der Linden ,  William J. Carley ,  James A. Lyon ,  Matthew C. McCline

    发明人： Michael J. Skarpelos ,  Robert van der Linden ,  William J. Carley ,  James A. Lyon ,  Matthew C. McCline

    IPC分类号： G06F11/14 ,  G06F11/34

    CPC分类号： G06F11/1474 ,  G06F2201/80

    摘要： A fault tolerant computer system distributes audit trail files containing audit records, across an arbitrary number of disk volumes. After one audit trail file becomes full, audit records are directed toward a next audit trail file stored on a different disk volume. Storage of newly generated audit rotates through the disk volumes in roundrobin fashion. Full audit trail files are eventually archived and their space becomes available again for renaming and storage of newly generated audit records. The number of audit records available for on-line recovery after a failure is not limited to the storage capacity of any single disk volume. Furthermore, there is no contention for disk access between archiving of full audit trail files and storage of newly generated audit records.

    摘要翻译： 容错计算机系统将包含审计记录的审计跟踪文件分布在任意数量的磁盘卷中。 在一个审计跟踪文件变满之后，审核记录将针对存储在不同磁盘卷上的下一个审计跟踪文件。 新生成的审核的存储将以roundrobin方式旋转通过磁盘卷。 完整的审计跟踪文件最终被归档，并且它们的空间可用于重新命名和存储新生成的审计记录。 故障后可用于在线恢复的审核记录数不限于任何单个磁盘卷的存储容量。 此外，对归档完整的审计跟踪文件和存储新生成的审计记录之间的磁盘访问没有争议。

    Database query cost model optimizer
    10.
    发明授权
    Database query cost model optimizer 有权
    数据库查询成本模型优化器

    公开(公告)号：US06330552B1

    公开(公告)日：2001-12-11

    申请号：US09162638

    申请日：1998-09-28

    申请人： Christopher M. Farrar ,  Harry A. Leslie ,  Pedro Celis ,  Diana L. Shak ,  Jay H. Vaishnav ,  Michael J. Skarpelos

    发明人： Christopher M. Farrar ,  Harry A. Leslie ,  Pedro Celis ,  Diana L. Shak ,  Jay H. Vaishnav ,  Michael J. Skarpelos

    IPC分类号： G06F1760

    CPC分类号： G06Q10/04 ,  G06Q30/0283 ,  Y10S707/99931 ,  Y10S707/99932

    摘要： A method and apparatus is disclosed for accurately estimating the cost of a database query, including the total computer resources used and estimated elapsed time for the production of a first row and last row of an operator involved in the query and/or the total resources used and elapsed time for returning the overall response to a database query. The method and apparatus accurately accounts for resources used and elapsed time associated with blocking operators, such as sorts and hash joins, which cannot produce a first row until they have completed their operations.

    摘要翻译： 公开了一种用于精确估计数据库查询的成本的方法和装置，包括所使用的总计算机资源和用于生成涉及查询的运营商的第一行和最后一行的估计经过时间和/或所使用的总资源 以及将整体响应返回到数据库查询的时间。 该方法和装置准确地说明了与阻塞运算符（例如排序和散列连接）相关联的资源所用的资源和经过的时间，在完成其操作之前不能产生第一行。