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:
Jan. 29, 2019
Filed:
Dec. 15, 2014
Oracle International Corporation, Redwood Shores, CA (US);
Nicolas Michael, San Francisco, CA (US);
Yixiao Shen, San Ramon, CA (US);
Oracle International Corporation, Redwood Shores, CA (US);
Abstract
A method for a live migration in a multitenant clustered database aimed at providing efficient migration of transactional online databases with no service interruption or failed requests and minimal impact on quality of service. The migration is facilitated by a client connection pool, which migrates connections from the source node to the target node using a self-adapting algorithm to control the migration rate. The algorithm calculates a base migration rate according to the relative number of connections transferred to the target node. Once base migration rate is calculated, the algorithm accelerates or throttles the base migration rate based on workload behavior and system load, attempting to minimize impact on the migrated tenant, while keeping overall migration time low.