公开(公告)号：GB2328531A

公开(公告)日：1999-02-24

申请号：GB9717900

申请日：1997-08-23

Applicant: IBM

Inventor： MITCHELL IAN JAMES ,  POWELL STEVEN

IPC: G06F3/06 ,  G06F5/00 ,  G06F17/30

Abstract: A data management system and method enable the storage of along record held in volatile memory as a set of keyed physical records of restricted length in non-volatile storage while minimising movement of data. The logical record 12 to be stored is logically divided into a number of physical record portions 14,15,16 to each of which is prepended a key with a unique sequence number. By starting from one end of the record with the key of highest sequence number and copying the physical record consisting of key plus data into the data set, successive physical records can be assembled in situ by overwriting the previous record's data portion with the current record's key. This ensures that the split logical record data need only be moved once as it is transferred to non-volatile storage as physical records 24,25,26 of the data set. The original logical record can be reassembled (Fig 4) by reversing the above procedure. Thus, the last written (lowest sequence number) physical record is written into main memory first and subsequent physical records are written into main memory so that their data portions overwrite the previously written record's key.

公开(公告)号：AT525690T

公开(公告)日：2011-10-15

申请号：AT04731388

申请日：2004-05-06

Applicant: IBM

Inventor： GORMAN DAVID JOHN ,  JOHNSON MICHAEL ,  NAISH MARTIN ,  O'DOWD ANTHONY JOHN ,  POWELL STEVEN ,  TOLEDO-BROWN STEPHEN BENJAMIN

IPC: G06F9/44 ,  G06F11/34

Abstract: Provided are methods, apparatus and computer programs for monitoring operational data relating to a sequence of data processing operations in a network of data processing units. In response to specified boundaries for data gathering, operational data is selectively gathered into discrete data partitions for a desired time period, a desired set of processing nodes, and/or a desired set of process executions. A set of event listeners invoke operations of a data gatherer in response to events within a processing sequence and the data gatherer allocates operational data to different ones of a set of discrete logical data containers in response to notifications from the event listeners. The data collection is responsive to system events such as a collection interval expiry to end data collection for a first partition and start data collection for a second partition.

公开(公告)号：AU2002237437A1

公开(公告)日：2002-10-15

申请号：AU2002237437

申请日：2002-03-07

Applicant: IBM

Inventor： FREUND THOMAS JAMES ,  MITCHELL IAN JAMES ,  LAWRENCE JONATHAN PETER HOARE ,  DALTON ANN ELEANOR ,  STOREY ANTHONY ,  NORMINGTON GLYN ,  DICKINSON BARRY ,  CLEMENT ANDREW SIMON ,  POWELL STEVEN

IPC: G06F15/16 ,  G06F9/46 ,  G06F9/50 ,  G06F15/177

Abstract: In a workload managed system comprising a plurality of server processes each capable of supporting a given program entity, such as an Enterprise JavaBeans(TM) specified stateful session bean, a stateful session bean instance is passivated, by writing it to a bean store, on completion of a unit of work. On next use the session bean is reactivated, by reading it from the bean store, in any one of the plurality of servers thereby allowing workload management for stateful session beans. A routing table is maintained, in non-volatile mass storage, that contains location information for units of work and stateful session bean instances, used to maintain unit of work-server affinity for the lifetime of the unit of work Stateful session beans instances are associated with ID keys that include a flag that is used to indicate whether or not the routing table contains location information for the bean instance.

公开(公告)号：DE69913375D1

公开(公告)日：2004-01-15

申请号：DE69913375

申请日：1999-10-13

Applicant: IBM

Inventor： MITCHELL JAMES ,  POWELL STEVEN

IPC: G06F9/46 ,  G06F11/14

Abstract: A transaction processing method, system and computer program product for processing applications comprising multiple component transactions. A transaction failure of a component transaction causes a reliable admission of failure by means of a failure indicator to be made available to one or more further transactions. The failure indicator is stored in recoverable storage, so that its effect can survive system failure and recovery.

公开(公告)号：AT255740T

公开(公告)日：2003-12-15

申请号：AT99949223

申请日：1999-10-13

Applicant: IBM

Inventor： MITCHELL IAN JAMES ,  POWELL STEVEN

IPC: G06F9/46 ,  G06F11/14

Abstract: A transaction processing method, system and computer program product for processing applications comprising multiple component transactions. A transaction failure of a component transaction causes a reliable admission of failure by means of a failure indicator to be made available to one or more further transactions. The failure indicator is stored in recoverable storage, so that its effect can survive system failure and recovery.

公开(公告)号：PL347321A1

公开(公告)日：2002-03-25

申请号：PL34732199

申请日：1999-10-13

Applicant: IBM

Inventor： MITCHELL IAN JAMES ,  POWELL STEVEN

IPC: G06F9/46 ,  G06F11/14

Abstract: A transaction processing method, system and computer program product for processing applications comprising multiple component transactions. A transaction failure of a component transaction causes a reliable admission of failure by means of a failure indicator to be made available to one or more further transactions. The failure indicator is stored in recoverable storage, so that its effect can survive system failure and recovery.