Buffer Consistency Management Method in Multiserver Database Management System Using Shared Disk Model

摘要

PURPOSE: A buffer consistency management method for a multi-server DBMS(Database Management System) is provided to improve the performance of the multi-serve DBMS by processing buffer consistency based on the minimum information about the page amended and the storage and data structure of the limited size. CONSTITUTION: If a server process writes out a buffer page to a disk in transaction, the page information of the changed buffer page is stored to a page information list of the server process. If the server process gets a volume lock in the transaction, the content of buffer reads the page information page within the coherent volume, and equalizes the page to the database. If the transaction is finished, the changed page information stored in the page information list is stored to the coherent volume.