Patents by Inventor Qingin Wang

Qingin Wang 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).

  • Patent number: 7363538
    Abstract: A method, system, and computer program product for generating checkpoint information in a database management system that determines the frequency of checkpointing of transactions based on a cost/benefit tradeoff analysis. A method for generating checkpointing information in a database management system comprises the steps of generating redo information based on transactions processed by the database management system, determining a cost of recovery using the redo information, determining a cost of taking a checkpoint, receiving a user specification of acceptable recovery delay and acceptable checkpoint overhead, and taking a checkpoint when cost effective to do so based on the cost of recovery using the redo information, the cost of taking the checkpoint and the user-specified acceptable delay and overhead.
    Type: Grant
    Filed: May 31, 2002
    Date of Patent: April 22, 2008
    Assignee: Oracle International Corporation
    Inventors: Joydip Kundu, Qingin Wang, Anthony J. Adams