公开(公告)号：US5428771A

公开(公告)日：1995-06-27

申请号：US245845

申请日：1994-05-19

申请人： Dean S. Daniels ,  Thomas J. Freund ,  Roger L. Haskin ,  Robert A. Storey

发明人： Dean S. Daniels ,  Thomas J. Freund ,  Roger L. Haskin ,  Robert A. Storey

IPC分类号： G06F13/00 ,  G06F9/46 ,  G06F12/00 ,  H04L29/06 ,  H04Q11/04 ,  G06F17/30

CPC分类号： H04L29/06

摘要： A mechanism is provided which allows transparent transaction processing to occur between distributed networks using the AIX or SNA protocols. The present invention will convert between the AIX standard of Two Phase Commit/Presumed Abort (2PC/PA) and the SNA standard of Two Phase Commit/Presume Nothing (2PC/PN). The Presumed Abort Protocol will optimize operations by reducing the number of messages between sites participating in the transaction, and the amount of transaction state information maintained at a site. Thus, any messages needed will be generated and transaction status information will be maintained in order to satisfy a Standard 2PC/PN protocol, when sites within a SNA network are participating in an AIX transaction. Further, the present invention will discard, or ignore any extraneous messages which are received while sites within an AIX network are participating in a SNA transaction.

摘要翻译： 提供了一种机制，允许在使用AIX或SNA协议的分布式网络之间进行透明事务处理。 本发明将在两阶段提交/推定中止（2PC / PA）的AIX标准与两相提交/假设无（2PC / PN）的SNA标准之间进行转换。 “假定中止协议”将通过减少参与交易的站点之间的消息数量以及站点上维护的交易状态信息的数量来优化操作。 因此，当SNA网络中的站点参与AIX事务时，将生成所需的任何消息，并且将维护事务状态信息，以满足标准2PC / PN协议。 此外，本发明将丢弃或忽略在AIX网络中的站点正在参与SNA事务时接收到的任何无关的消息。

公开(公告)号：US5278982A

公开(公告)日：1994-01-11

申请号：US813233

申请日：1991-12-23

申请人： Dean S. Daniels ,  Wayne A. Sawdon ,  Roger L. Haskin

发明人： Dean S. Daniels ,  Wayne A. Sawdon ,  Roger L. Haskin

IPC分类号： G06F11/34 ,  G06F11/14 ,  G06F12/00 ,  G06F15/00 ,  G06F7/22 ,  G06F11/08 ,  G06F15/40

CPC分类号： G06F11/1471 ,  G06F11/1402 ,  G06F11/1415 ,  G06F2201/82 ,  G06F2201/835 ,  G06F2201/87 ,  Y10S707/99953

摘要： A method for implementing transaction-consistent resource recovery from catastrophic media failures in a single pass over a recovery log archive while permitting most UNDO log records to be discarded during log archiving. The media recovery procedure is based on a pseudo-crash recovery technique that simulates a system crash at a selected time by writing PSEUDO-RECOVERY records to the recovery log. Resource recovery is then performed by normal execution of the log archive records up to the most recent pseudo-crash followed by execution of the subsequent PSEUDO-RECOVERY records. The recovery log record execution procedures are compatible with the ARIES recovery method. One embodiment of this invention assumes that the recovery log records can be selected for archiving on the basis of a combination of record type and transaction identifier.

摘要翻译： 一种在灾难性介质故障中执行事务一致性资源恢复的方法，可以在恢复日志归档中单次传递，同时允许在日志归档期间丢弃大多数UNDO日志记录。 媒体恢复过程基于伪故障恢复技术，通过将PSEUDO-RECOVERY记录写入恢复日志，可以在选定的时间模拟系统崩溃。 然后通过正常执行日志归档记录直到最近的伪崩溃，然后执行后续的PSEUDO-RECOVERY记录来执行资源恢复。 恢复日志记录执行过程与ARIES恢复方法兼容。 本发明的一个实施例假设可以基于记录类型和事务标识符的组合来选择恢复日志记录以进行归档。