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.

Date of Patent:
Dec. 05, 2017

Filed:

Sep. 16, 2016
Applicant:

International Business Machines Corporation, Armonk, NY (US);

Inventors:

Justin T. Fries, Raleigh, NC (US);

Venkataraghavan Lakshminarayanachar, Bangalore, IN;

Rajesh C. Lalgowdar, Bangalore, IN;

Lohitashwa Thyagaraj, Bangalore, IN;

Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
G06F 17/30 (2006.01);
U.S. Cl.
CPC ...
G06F 17/30362 (2013.01); G06F 17/30171 (2013.01); G06F 17/30339 (2013.01); G06F 17/30371 (2013.01); G06F 17/30377 (2013.01); G06F 17/30864 (2013.01);
Abstract

Establishment of an exclusive lock on each of an outer database ownership table and an inner database ownership table is attempted. In response to establishing the exclusive lock on each of the outer database ownership table and the inner database ownership table, a switch is made to a pair of overlapping shared locks on each of the outer database ownership table and the inner database ownership table. Release and re-acquisition of each of the pair of overlapping shared locks on the outer database ownership table and the inner database ownership table is alternated.


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