Patents by Inventor Zheren R. Zhang

Zheren R. Zhang 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).

  • Remote one-sided persistent writes
    Patent number: 10732836
    Abstract: A shared storage architecture persistently stores database files in non-volatile random access memories (NVRAMs) of computing nodes of a multi-node DBMS. The computing nodes of the multi-node DBMS not only collectively store database data on NVRAMs of the computing nodes, but also host database server instances that process queries in parallel, host database sessions and database processes, and together manage access to a database stored on the NVRAMs of the computing nodes. To perform a data block read operation from persistent storage, a data block may be transferred directly over a network between NVRAM of a computing node that persistently stores the data block to a database buffer in non-volatile RAM of another computing node that requests the data block. The transfer is accomplished using remote direct memory access (“RDMA).
    Type: Grant
    Filed: September 29, 2017
    Date of Patent: August 4, 2020
    Assignee: Oracle International Corporation
    Inventors: Jia Shi, Yiliang Jin, Zheren R. Zhang, Zuoyu Tao, Vijay Sridharan, Kothanda Umamageswaran, Graham Ivey, Yunrui Li
  • REMOTE ONE-SIDED PERSISTENT WRITES
    Publication number: 20190102087
    Abstract: A shared storage architecture persistently stores database files in non-volatile random access memories (NVRAMs) of computing nodes of a multi-node DBMS. The computing nodes of the multi-node DBMS not only collectively store database data on NVRAMs of the computing nodes, but also host database server instances that process queries in parallel, host database sessions and database processes, and together manage access to a database stored on the NVRAMs of the computing nodes. To perform a data block read operation from persistent storage, a data block may be transferred directly over a network between NVRAM of a computing node that persistently stores the data block to a database buffer in non-volatile RAM of another computing node that requests the data block. The transfer is accomplished using remote direct memory access (“RDMA).
    Type: Application
    Filed: September 29, 2017
    Publication date: April 4, 2019
    Inventors: Jia Shi, Yiliang Jin, Zheren R. Zhang, Zuoyu Tao, Vijay Sridharan, Kothanda Umamageswaran, Graham Ivey, Yunrui Li