Patents Assigned to ORACLE INTERNATIONAL CORPORTION
  • Publication number: 20120323849
    Abstract: A method and system is provided for reducing delay to applications connected to a database server that guarantees no data loss during failure or disaster. After storing a log record persistently in a local primary log, the log writer returns control to the application which continues running concurrently with the database server sending the session's log records to a standby database. A separate back channel is used by the standby to communicate, out-of-band to the primary, the location of the last log record stored persistently to the standby log. An application waiting for a transaction to commit may wait until the transaction's commit record has been persisted. Also described is a technique for reducing application delay when there is contention between nodes of a multi-node cluster for updating the same block. The technique provides for an asynchronous ping protocol that guarantees zero data loss during failure or disaster.
    Type: Application
    Filed: June 15, 2011
    Publication date: December 20, 2012
    Applicant: ORACLE INTERNATIONAL CORPORTION
    Inventors: Benedicto E. Garin, JR., Mahesh B. Girkar, Yunrui Li, Vsevolod Panteleenko, Vinay H. Srihari