Patents by Inventor Eric W. Hardesty

Eric W. Hardesty has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Rebuilding “in-doubt” states reliably after multiple system failures in a data processing system performing two-phase transaction processing
    Patent number: 6895529
    Abstract: A data processing system participating in two-phase transaction processing operations which, when a system failure occurs while one or more transactions are in process, can successfully rebuild “in-doubt” states even when another system failure occurs during an attempt to effect the rebuild. The system includes a file management system having exclusive access to reserved locations in the memory for reading and writing meta-data therein and physical file access logic selectively coupling the memory and the database access application, the physical file access logic incorporating file protections which are controlled by the file management system; such that, in the event of a failure, the local state of the transaction can be faithfully rebuilt after restart by accessing the meta-data.
    Type: Grant
    Filed: February 13, 2002
    Date of Patent: May 17, 2005
    Assignee: Bull HN Information Systems, Inc.
    Inventors: David A. Egolf, Eric W. Hardesty
  • Rebuilding "in-doubt" states reliably after multiple system failures in a data processing system performing two-phase transaction processing
    Publication number: 20030154423
    Abstract: A data processing system participating in two-phase transaction processing operations which, when a system failure occurs while one or more transactions are in process, can successfully rebuild “in-doubt” states even when another system failure occurs during an attempt to effect the rebuild. The system includes a file management system having exclusive access to reserved locations in the memory for reading and writing meta-data therein and physical file access logic selectively coupling the memory and the database access application, the physical file access logic incorporating file protections which are controlled by the file management system; such that, in the event of a failure, the local state of the transaction can be faithfully rebuilt after restart by accessing the meta-data.
    Type: Application
    Filed: February 13, 2002
    Publication date: August 14, 2003
    Applicant: Bull HN Information Systems Inc.
    Inventors: David A. Egolf, Eric W. Hardesty