Appeal No. 1999-1557
Application 08/650,397
lines 6-8. When the copying completes, the redundant database
is fully recovered into a concurrently consistent state and
the continuing incoming update operations in the redundant
database system serve to maintain the concurrent consistency
of the redundant database until another failure occurs.
Specification, page 4, lines 8-11. The invention requires
interchangeability of the operating status of each of
two database systems and identifiability of each database
record by some unique Record Identification Key (RIK).
Specification, page 4, lines 11-14.
Appellant’s representative claim 1 recites as
follows:
1. In a transaction processing system including
first and second database systems for processing queries and
updates, each said database system having a database in which
are stored a plurality of records, each having an (sic)
unique Record Identification Key (RIK), wherein said second
database system database is a replica of said first database
system database, a method for recovering from failure of
said second database system, said method comprising the steps
of:
(a) repairing said failure and restarting operation
of said second database system;
3
Page: Previous 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Next
Last modified: November 3, 2007