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. 30, 2011
Filed:
Jun. 01, 2007
Sanjay Verma, Foster City, CA (US);
Mark L. Mcauliffe, Palo Alto, CA (US);
Sherry Listgarten, Palo Alto, CA (US);
Sibsankar Haldar, Madhyamgram, IN;
Chi-kim Hoang, Palo Alto, CA (US);
Sanjay Verma, Foster City, CA (US);
Mark L. McAuliffe, Palo Alto, CA (US);
Sherry Listgarten, Palo Alto, CA (US);
Sibsankar Haldar, Madhyamgram, IN;
Chi-Kim Hoang, Palo Alto, CA (US);
Oracle International Corporation, Redwood Shores, CA (US);
Abstract
A two copy versioning scheme is proposed. The scheme provides efficient implementation for a high read load database and eliminates read dependencies. The versioning scheme provides efficient implementation for transactions executing under ANSI READ COMMITTED isolation, and is extensible to serializable isolation. The two-copy versioning scheme is garbage free meaning that all versions of data records are used during execution and is adapted to index scanning operations. A 'deferred delete' scheme allows read transactions to complete data deallocation operations. Statements that require 'snapshots' are efficiently supported.