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:
Aug. 04, 2015
Filed:
Jan. 25, 2013
Juchang Lee, Seoul, KR;
Chang Gyoo Park, Seoul, KR;
Yongjae Chuh, Seoul, KR;
Jaeyun Noh, Seoul, KR;
Michael Muehle, Walldorf, DE;
Juchang Lee, Seoul, KR;
Chang Gyoo Park, Seoul, KR;
Yongjae Chuh, Seoul, KR;
Jaeyun Noh, Seoul, KR;
Michael Muehle, Walldorf, DE;
SAP SE, Walldorf, DE;
Abstract
Systems, methods and computer program product embodiments for providing version garbage collection using snapshot lists are disclosed herein. Version garbage collection using snapshot lists includes storing, by at least one processor, versions of a record in a database table, the record comprising a record value and a version timestamp, storing, by the at least one processor, active snapshots in two levels of active snapshot lists, an active snapshot comprising a transaction identifier and a snapshot timestamp, determining, by the at least one processor, a minimum active snapshot from the active snapshots in the two levels of active snapshot lists and deleting, by the at least one processor, versions of the record having a version timestamp earlier than a snapshot timestamp of the minimum active snapshot.