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. 05, 2016
Filed:
Dec. 07, 2009
Ronen Grosman, Thornhill, CA;
Matthew A. Huras, Ajax, CA;
Timothy R. Malkemus, Round Rock, TX (US);
Keriley K. Romanufa, Scarborough, CA;
Aamer Sachedina, Queensville, CA;
Kelly W. Schlamb, Richmond Hill, CA;
Nickolay V. Tchervenski, Newmarket, CA;
Xun Xue, Markham, CA;
Ronen Grosman, Thornhill, CA;
Matthew A. Huras, Ajax, CA;
Timothy R. Malkemus, Round Rock, TX (US);
Keriley K. Romanufa, Scarborough, CA;
Aamer Sachedina, Queensville, CA;
Kelly W. Schlamb, Richmond Hill, CA;
Nickolay V. Tchervenski, Newmarket, CA;
Xun Xue, Markham, CA;
International Business Machines Corporation, Armonk, NY (US);
Abstract
An ordering of operations in log records includes: performing update operations on a database object by a node; writing log records for the update operations into a local buffer by the node, the log records each including a local virtual timestamp; determining that a log flush to write the log records in the local buffer to a persistent storage is to be performed; in response, sending a request from the node to a log flush sequence server for a log flush sequence number; receiving the log flush sequence number by the node; inserting the log flush sequence number into the log records in the local buffer; and performing the log flush to write the log records in the local buffer to the persistent storage, where the log records written to the persistent storage comprises the local virtual timestamps and the log flush sequence number.