Prabhakara R Vinta

US Patent:

20090006499, Jan 1, 2009

Filed:

Jun 29, 2007

Appl. No.:

11/771557

Inventors:

Sultan Q. Mukhi - Sugar Land TX, US
Emtiaz A. Momin - Stafford TX, US
Prabhakara R. Vinta - Houston TX, US

International Classification:

G06F 12/16
G06F 17/30

US Classification:

707204, 707E17005

Abstract:

Techniques for operating an archival database, referred to as a historian, are disclosed. Embodiments of the invention provide techniques for synchronizing historical archive files and/or archival data between a primary and a secondary historian used to archive data values from a real-time database. The real-time database may be used to monitor the current operational state of a large industrial system, such as a pipeline. In turn, the historian may be used to archive the data stored by the real-time database. In the event that either the primary or the secondary system (or both) goes down and then comes back online at a later time, embodiments of the invention may be used to synchronize data between the primary and secondary historian systems.