The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 29, 2009
Filed:
Jan. 02, 2004
William H. Bridge, Jr., Alameda, CA (US);
Boris Klots, Belmont, CA (US);
Juan R. Loaiza, Redwood City, CA (US);
Ashok Joshi, Westborough, MA (US);
William H. Bridge, Jr., Alameda, CA (US);
Boris Klots, Belmont, CA (US);
Juan R. Loaiza, Redwood City, CA (US);
Ashok Joshi, Westborough, MA (US);
Oracle International Corporation, Redwood Shores, CA (US);
Abstract
A method and system for reducing overhead associated with recovering after a failure. According to the method, a checkpoint value is maintained that indicates which records of a plurality of records have to be processed after the failure. The plurality of records contain change information that corresponds to a plurality of data blocks. A target checkpoint value is determined based on a desired number of data block reads that will be required during a redo phase of recovery. Changes contained in volatile memory are then written to nonvolatile memory to advance the checkpoint value to at least the target checkpoint value.