Patents by Inventor Clark W. Walker

Clark W. Walker 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).

  • Predicting validity of data replication prior to actual replication in a transaction processing system
    Patent number: 9727601
    Abstract: Validating a write of a replica record to a replica data store in a transaction processing system. The source record is written to a location in the source data store, and the location is recorded in a transaction log file. The transaction processing system obtains from the transaction log file the location, and the location in the replica data store to which the replica record will be written is predicted, based on the location and length of the previous replica record. If the obtained location of the source record corresponds to the predicted location of the replica record location, the replica record is written to a location in the replica data store.
    Type: Grant
    Filed: August 25, 2016
    Date of Patent: August 8, 2017
    Assignee: International Business Machines Corporation
    Inventors: Ralph A. Rinke, Clark W. Walker, Austin J. Willoughby
  • PREDICTING VALIDITY OF DATA REPLICATION PRIOR TO ACTUAL REPLICATION IN A TRANSACTION PROCESSING SYSTEM
    Publication number: 20160364436
    Abstract: Validating a write of a replica record to a replica data store in a transaction processing system. The source record is written to a location in the source data store, and the location is recorded in a transaction log file. The transaction processing system obtains from the transaction log file the location, and the location in the replica data store to which the replica record will be written is predicted, based on the location and length of the previous replica record. If the obtained location of the source record corresponds to the predicted location of the replica record location, the replica record is written to a location in the replica data store.
    Type: Application
    Filed: August 25, 2016
    Publication date: December 15, 2016
    Inventors: Ralph A. Rinke, Clark W. Walker, Austin J. Willoughby
  • Predicting validity of data replication prior to actual replication in a transaction processing system
    Patent number: 9454590
    Abstract: A method, computer program product and computer system to validate a write of a replica record to a replica data store in a transaction processing system, the replica record duplicating a source record in a source data store. The transaction processing system obtains a value associated with a record location of the source record in the source data store. The transaction processing system predicts a value associated with a record location of the replica record in the replica data store and responsive to the obtained value associated with the source record location not corresponding to the predicted value associated with the replica record location, not writing the replica record.
    Type: Grant
    Filed: January 28, 2014
    Date of Patent: September 27, 2016
    Assignee: International Business Machines Corporation
    Inventors: Ralph A. Rinke, Clark W. Walker, Austin J. Willoughby
  • PREDICTING VALIDITY OF DATA REPLICATION PRIOR TO ACTUAL REPLICATION IN A TRANSACTION PROCESSING SYSTEM
    Publication number: 20150213099
    Abstract: A method, computer program product and computer system to validate a write of a replica record to a replica data store in a transaction processing system, the replica record duplicating a source record in a source data store. The transaction processing system obtains a value associated with a record location of the source record in the source data store. The transaction processing system predicts a value associated with a record location of the replica record in the replica data store and responsive to the obtained value associated with the source record location not corresponding to the predicted value associated with the replica record location, not writing the replica record.
    Type: Application
    Filed: January 28, 2014
    Publication date: July 30, 2015
    Applicant: International Business Machines Corporation
    Inventors: Ralph A. Rinke, Clark W. Walker, Austin J. Willoughby