Patents by Inventor Wai Shun Wilson CHAN

Wai Shun Wilson CHAN 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).

  • Automatic connection load balancing between instances of a cluster
    Patent number: 11652892
    Abstract: Disclosed is a method, a computer program product, and a computer system for implementing automatic connection load balancing of database connections between instances of a cluster. Load imbalances are detected globally in the cluster, and can be corrected autonomously by the local instances. The local controller/orchestrator detects the imbalance, computes a target for the instance, and makes any necessary adjustments on the instance, where a server marks the connections to redistribute, and then implements draining and/or planned failover to move sessions.
    Type: Grant
    Filed: September 30, 2020
    Date of Patent: May 16, 2023
    Assignee: Oracle International Corporation
    Inventors: Chandrajith Ramachandran Unnithan, Michael Ullrich Zoll, Wai Shun Wilson Chan, Tak Fung Wang, Carol Lyndall Colrain, Troy Anthony
  • Handling of unresponsive read only instances in a reader farm system
    Patent number: 11138198
    Abstract: Disclosed is a system, method, and computer program product to handle unresponsive reader instances in a database system. A timeout-based invalidation and suspension approach is provided that addresses the problem of unresponsive read-only instances.
    Type: Grant
    Filed: October 19, 2018
    Date of Patent: October 5, 2021
    Assignee: Oracle International Corporation
    Inventors: Francisco Rafael Flores Michel, Andrew Stuart Ingham, Wai Shun Wilson Chan, Chandrajith Ramachandran Unnithan
  • AUTOMATIC CONNECTION LOAD BALANCING BETWEEN INSTANCES OF A CLUSTER
    Publication number: 20210099530
    Abstract: Disclosed is a method, a computer program product, and a computer system for implementing automatic connection load balancing of database connections between instances of a cluster. Load imbalances are detected globally in the cluster, and can be corrected autonomously by the local instances. The local controller/orchestrator detects the imbalance, computes a target for the instance, and makes any necessary adjustments on the instance, where a server marks the connections to redistribute, and then implements draining and/or planned failover to move sessions.
    Type: Application
    Filed: September 30, 2020
    Publication date: April 1, 2021
    Inventors: Chandrajith Ramachandran UNNITHAN, Michael Ullrich ZOLL, Wai Shun Wilson CHAN, TAK Fung WANG, Carol Lyndall COLRAIN, Troy ANTHONY
  • HANDLING OF UNRESPONSIVE READ ONLY INSTANCES IN A READER FARM SYSTEM
    Publication number: 20200125665
    Abstract: Disclosed is a system, method, and computer program product to handle unresponsive reader instances in a database system. A timeout-based invalidation and suspension approach is provided that addresses the problem of unresponsive read-only instances.
    Type: Application
    Filed: October 19, 2018
    Publication date: April 23, 2020
    Applicant: ORACLE INTERNATIONAL CORPORATION
    Inventors: Francisco Rafael FLORES MICHEL, Andrew Stuart Ingham, Wai Shun Wilson CHAN, Chandrajith Ramachandran Unnithan