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:
Apr. 11, 2006
Filed:
Nov. 21, 2002
Charles Stuart Johnson, San Jose, CA (US);
David J. Wisler, Tigard, OR (US);
Trina R. Wisler, Tigard, OR (US);
William James Carley, Woodinville, WA (US);
Yu-cheung Cheung, San Jose, CA (US);
Albert Gondi, Santa Clara, CA (US);
Sitaram V. Lanka, Mercer Island, WA (US);
Charles Stuart Johnson, San Jose, CA (US);
David J. Wisler, Tigard, OR (US);
Trina R. Wisler, Tigard, OR (US);
William James Carley, Woodinville, WA (US);
Yu-Cheung Cheung, San Jose, CA (US);
Albert Gondi, Santa Clara, CA (US);
Sitaram V. Lanka, Mercer Island, WA (US);
Hewlett-Packard Development Company, L.P., Houston, TX (US);
Abstract
A Registration protocol is used in transaction processing for normal operations. If an error occurs, the system reverts to a Full Broadcast protocol. The Registration Protocol reduces the number of messages that are sent among CPUs in a cluster thereby permitting performance improvements in the system. The Registration Protocol has Begin, DPCheck, PhaseFlush and Phase(lock release) phases just as does the Full Broadcast Protocol, thereby permitting the Full Broadcast protocol to step in at any phase after an error is detected.