System and method for providing hot spare redundancy and recovery for a very large database management system
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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Mar 20, 2001
Grant Date -
N/A
app pub date -
Mar 20, 1998
filing date -
Mar 20, 1998
priority date (Note) -
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Abstract
For use with a primary database residing on a primary computer, the primary computer being couplable to a secondary computer having a secondary database, a system for, and method of, allowing the secondary computer to operate as a hot spare for the primary computer and a database management system employing the system or the method. In one embodiment, the system includes: (1) a transaction logger, associated with the primary database, that maintains log records of transactions involving persistent data in the primary database, (2) a transaction processor, associated with the primary database, that transmits at least a portion of the log records to the secondary computer to allow the secondary computer to commit the at least the portion of the log records to the secondary database and (3) parameters, associated with the primary and secondary databases, that designate a state of the primary and secondary computers and indicate relative synchronization of the primary and secondary databases.
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