Patent ID: 7197519
Filing Date: 2007-03-27
Classification: G06F,Y10S

Abstract:
1. A database system comprising: a center server; a single or a plurality of local servers; a first network for mutually connecting said center server and said single or the plurality of local servers; a plurality of local storage subsystems for storing local databases managed by said single or the plurality of local servers; a center storage subsystem for storing a plurality of replicated databases of said local databases; and a second network for mutually connecting said center server, said center storage subsystem, said single or the plurality of local servers and said local storage subsystems, wherein: said center server includes replication requesting means for sending a database replication request to each of said single or the plurality of local servers for requesting said single or the plurality of local servers to replicate the local databases and data consolidating means for performing a process of consolidating the replicated local databases so that said center server accessing the plurality of replicated databases of said local databases in a consolidated manner in said center storage subsystem; and each of said single or the plurality of local servers includes local database freeze requesting means for requesting a database management system to freeze said local database in responsive to the database replication request, and database replicating means for causing said local storage subsystems to replicate, in said center storage subsystem, said local databases stored in said local storage subsystems, and each of said single or the plurality of local servers controls to freeze said local databases in response to the database replication request by inhibiting subsequent updates of said local databases and stopping sending of update data to said center server, said update data being used to update replicated local databases representing replications of said local databases.