System for currently updating database by one host and reading the database by different host for the purpose of implementing decision support functions

摘要

A method of implementing decision support in an environment including a data storage system and a plurality of host processors at least some of which are connected to the data storage system, wherein the data storage system stores a working database, the method including the steps of through a selected one of the plurality of host processors, updating the working database on an ongoing basis; while the working database is being updated on an ongoing basis, generating a copy of the working database; using the copy of the database to generate a support copy of the database; and through a different one of the plurality of host processors, using the support copy for the purpose of implementing decision support functions.