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. 20, 2011
Filed:
Mar. 27, 2008
David Glenn Carlson, Rochester, MN (US);
Wei HU, Middleton, WI (US);
Kevin James Kathmann, Rochester, MN (US);
Shantan Kethireddy, Rolling Meadows, IL (US);
Andrew Peter Passe, Rochester, MN (US);
Ulrich Thiemann, Rochester, MN (US);
David Glenn Carlson, Rochester, MN (US);
Wei Hu, Middleton, WI (US);
Kevin James Kathmann, Rochester, MN (US);
Shantan Kethireddy, Rolling Meadows, IL (US);
Andrew Peter Passe, Rochester, MN (US);
Ulrich Thiemann, Rochester, MN (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
A method, apparatus and program product dynamically activate and/or deactivate buffers during execution of a database query. The dynamic deactivation and activation is based on the monitoring of information associated with the consumption of data by a plurality of threads during execution of an access plan for the database query. By doing so, the selection of a less optimal buffer position during optimization may be replaced with a more optimal buffer position during runtime, often resulting in improved query performance and parallelism.