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:
Jul. 26, 2011
Filed:
Mar. 20, 2003
Applicant:
Lawrence Butcher, Mountain View, CA (US);
Inventor:
Lawrence Butcher, Mountain View, CA (US);
Assignee:
Oracle America, Inc., Redwood City, CA (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06F 11/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A method and apparatus are provided, the method and apparatus comprising running a plurality of identical programs on a plurality of identical computers and recording information about at least some state updates done within each of the plurality of the identical programs running on the plurality of the identical computers using a plurality of digests of the at least some state updates. The method and apparatus also comprises comparing the plurality of the digests to determine whether at least one of the plurality of the identical programs running on the plurality of the identical computers has failed.