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. 26, 2016
Filed:
Jun. 29, 2007
Serge Bourbonnais, Palo Alto, CA (US);
Elizabeth B. Hamel, Morgan Hill, CA (US);
Bruce G. Lindsay, San Jose, CA (US);
Stephen J. Todd, Winchester, GB;
Serge Bourbonnais, Palo Alto, CA (US);
Elizabeth B. Hamel, Morgan Hill, CA (US);
Bruce G. Lindsay, San Jose, CA (US);
Stephen J. Todd, Winchester, GB;
International Business Machines Corporation, Armonk, NY (US);
Abstract
A mechanism for handling transaction messages in asynchronous data replication in a database system, in which the database system includes a source node and a target node, and each transaction message has information concerning a row change to a table copy at the source node. The mechanism determines whether a first transaction message has a dependency on a preceding non-completed transaction message. Responsive to the first transaction message having a dependency on the preceding non-completed transaction, the mechanism holds the first transaction message, completes the preceding non-completed transaction message including applying the row change associated with the preceding non-completed transaction message to the table copy at the target node, and responsive to completing the preceding non-completed transaction message, releases the first transaction message and applying the row change associated with the first transaction message to the table copy at the target node.