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:
Oct. 02, 2007
Filed:
Apr. 23, 2004
Roger J. Bamford, Peterborough, NH (US);
Sashikanth Chandrasekaran, Chennai, IN;
Angelo Pruscino, Los Altos, CA (US);
Roger J. Bamford, Peterborough, NH (US);
Sashikanth Chandrasekaran, Chennai, IN;
Angelo Pruscino, Los Altos, CA (US);
Oracle International Corporation, Redwood Shores, CA (US);
Abstract
Various techniques are described for improving the performance of a shared-nothing database system in which at least two of the nodes that are running the shared-nothing database system have shared access to a disk. Specifically, techniques are provided for changing the ownership of data in a shared-nothing database dynamically, based on factors such as which node would be the most efficient owner relative to the performance of a particular operation. Once determined, the ownership of the data may be changed permanently to the new owner, or temporarily for the duration of the particular operation.