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:
Feb. 23, 2016
Filed:
Jan. 05, 2006
Applicants:
Aditya Kapoor, Bellevue, WA (US);
Wenlu MA, Sammamish, WA (US);
Craig G. Duncan, Issaquah, WA (US);
Inventors:
Assignee:
EMC CORPORATION, Hopkinton, MA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06F 17/00 (2006.01); G06F 11/20 (2006.01); G06F 11/14 (2006.01); G06F 17/30 (2006.01);
U.S. Cl.
CPC ...
G06F 11/2094 (2013.01); G06F 11/1458 (2013.01); G06F 17/30306 (2013.01);
Abstract
In one example, a method for detecting failover in a database mirroring system that begins when a determination is made as to the time of the most recent backup of the principal database. Next, the time of the most recent backup of the mirror database is determined. Then, the time of the most recent backup of the principal database is compared to the time of the most recent backup of the mirror database to determine if the principal database was backed up most recently. Finally, if the mirror database is the database that was backed up most recently, it is established that failover has occurred.