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:
Sep. 05, 2006
Filed:
Mar. 29, 2002
Bruce D. Holenstein, Media, PA (US);
Paul J. Holenstein, Downingtown, PA (US);
Gary E. Strickler, Pottstown, PA (US);
Bruce D. Holenstein, Media, PA (US);
Paul J. Holenstein, Downingtown, PA (US);
Gary E. Strickler, Pottstown, PA (US);
Gravic, Inc., Malvern, PA (US);
Abstract
Database replication systems replicate blocks of transaction steps or operations with synchronous replication, and perform dual writes with queuing and blocking of transactions. Tokens are used to prepare a target database for replication from a source database and to confirm the preparation. Database replication systems switch between a synchronous replication mode and an asynchronous replication mode, and then back to a synchronous replication mode, based on detection of selected events.