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1. 发明授权

US5327532A Coordinated sync point management of protected resources 失效
标题翻译：受保护资源的协同同步点管理
公开(公告)号：US5327532A
公开(公告)日：1994-07-05
申请号：US525427
申请日：1990-05-16
申请人： Michael K. Ainsworth , Cherie C. Barnes , Robert B. Bennett , Barbara A. M. Maslak , Edmond A. Pruul , James M. Showalter , Thomas J. Szczygielski , Amos S. Tanner
发明人： Michael K. Ainsworth , Cherie C. Barnes , Robert B. Bennett , Barbara A. M. Maslak , Edmond A. Pruul , James M. Showalter , Thomas J. Szczygielski , Amos S. Tanner
IPC分类号： G06F9/52 , G06F9/46 , G06F11/00 , G06F13/00
CPC分类号： G06F9/466
摘要： In a computer system or process, sync point managers are distributed throughout each real machine for a plurality of execution environments, but all of the execution environments and sync point managers within one real machine share a common recovery facility and recovery log. A common recovery log is used by the recovery facility for all of the execution environments in the system. Different systems are interconnected by a communication facility and each has its own recovery facility and recovery log. A protected conversation can be initiated between the first and second execution environments in the same real machine, and the sync point managers within the respective execution environments coordinate the two-phase commit procedures associated with the protected conversations. A conversation manager within each real machine assists in routing the conversation between the first and second execution environments. Each resource manager, whether residing inside or outside of the real machine, has its own recovery log, but uses the recovery facility of the real machine that accesses the resource.
摘要翻译：在计算机系统或过程中，同步点管理器分布在多个执行环境的每个真实机器中，但是一个真实机器中的所有执行环境和同步点管理器共享共同的恢复设备和恢复日志。恢复工具对系统中的所有执行环境使用常见的恢复日志。不同的系统通过通信设备相互连接，每个系统都有自己的恢复设备和恢复日志。可以在相同的真实机器中的第一和第二执行环境之间启动受保护的对话，并且相应执行环境中的同步点管理器协调与受保护对话相关联的两阶段提交过程。每个真实机器中的会话管理器有助于在第一和第二执行环境之间路由对话。每个资源管理器，无论是驻留在真实机器内还是外部，都有自己的恢复日志，但使用访问资源的真实机器的恢复工具。

2. 发明授权

US5319774A Recovery facility for incomplete sync points for distributed application 失效
标题翻译：用于分布式应用的不完整同步点的恢复设施
公开(公告)号：US5319774A
公开(公告)日：1994-06-07
申请号：US525938
申请日：1990-05-16
申请人： Michael K. Ainsworth , Robert B. Bennett , Barbara A. M. Maslak , James M. Showalter , Thomas J. Szczygielski , Amos S. Tanner
发明人： Michael K. Ainsworth , Robert B. Bennett , Barbara A. M. Maslak , James M. Showalter , Thomas J. Szczygielski , Amos S. Tanner
IPC分类号： G06F11/34 , G06F9/46 , G06F9/52 , G06F11/14 , G06F12/00 , G06F11/00
CPC分类号： G06F9/466 , G06F11/1402
摘要： To recover a failed commit procedure, a first recovery facility collects and compares sync point state information from a variety of different types of resources including a data repository and a protected conversation. The comparison of the sync point state information is made automatically in response to a sync point failure event. A second recovery facility serving another execution environment notifies the first recovery facility after a failure and subsequent recovery procedure of the second execution environment has completed. The first recovery facility makes automatic cyclic attempts to communicate with the second recovery facility. The first recovery facility can receive a manually initiated but automatically simulated response of sync point state information when there is a failure such that actual sync point state information cannot be received. The first recovery facility is responsive to the simulated sync point state information to proceed with a recovery operation substantially as if actual sync point state information were received.
摘要翻译：为了恢复失败的提交过程，第一恢复设施收集并比较来自各种不同类型资源的同步点状态信息，包括数据存储库和受保护对话。响应于同步点故障事件自动进行同步点状态信息的比较。服务于另一执行环境的第二恢复设施在故障之后通知第一恢复设施，并且第二执行环境的后续恢复过程已经完成。第一个恢复设施进行自动循环尝试与第二个恢复设施进行通信。当存在故障时，第一恢复设施可以接收到同步点状态信息的手动启动但自动模拟的响应，使得不能接收到实际的同步点状态信息。第一恢复设施响应于模拟的同步点状态信息，以基本上如同接收到实际的同步点状态信息那样进行恢复操作。

3. 发明授权

US5410684A Log name exchange for recovery of protected resources 失效
标题翻译：用于恢复受保护资源的日志名称交换
公开(公告)号：US5410684A
公开(公告)日：1995-04-25
申请号：US124368
申请日：1993-09-20
申请人： Michael K. Ainsworth , Cherie C. Barnes , Robert B. Bennett , Robert C. Will
发明人： Michael K. Ainsworth , Cherie C. Barnes , Robert B. Bennett , Robert C. Will
IPC分类号： G06F9/52 , G06F9/46 , G06F11/14 , G06F11/34 , G06F12/00 , G06F11/28 , G06F15/16
CPC分类号： G06F9/466 , G06F11/1402
摘要： A computer network comprises first and second computers, each having a recovery facility for recovering a two-phase commit procedure and a recovery log. The log comprises a log name log which stores the names of other logs involved in a commit scope and a sync point log which stores sync point phase information. The log names are exchanged prior to a request for sync point. If a failure occurs during sync point, each recovery facility in the commit scope again exchanges log names to verify that there was not a log failure since the prior exchange. Absent a log failure, the logs are used to recover from the sync point failure. Communication facilities are interposed between the first and second computers and include log name exchange tables which record the previous exchanges of log names between the first and second computers. If a protected conversation is initialized from the first computer to the second computer and log names were not previously exchanged, then the communication facilities intercept the conversation and hold it until log names are exchanged.
摘要翻译：计算机网络包括第一和第二计算机，每个计算机具有用于恢复两阶段提交过程和恢复日志的恢复设施。该日志包括一个日志名日志，其中存储提交范围中涉及的其他日志的名称以及存储同步点相位信息的同步点日志。在请求同步点之前交换日志名称。如果在同步点发生故障，则提交范围中的每个恢复工具再次交换日志名称，以验证自从之前的交换以来没有日志失败。没有日志失败，日志用于从同步点故障中恢复。通信设施介于第一和第二计算机之间，并且包括日志名称交换表，其记录第一和第二计算机之前的日志名称交换。如果受保护的会话从第一台计算机初始化为第二台计算机，并且以前没有交换日志名称，那么通信设备将拦截会话并保持会话，直到日志名称被更换为止。

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