Browse Prior Art Database

Enhanced Catalog Recovery

IP.com Disclosure Number: IPCOM000040247D
Original Publication Date: 1987-Oct-01
Included in the Prior Art Database: 2005-Feb-02

Publishing Venue

IBM

Related People

Authors:
Branch, SM Daray, EH Ferlitsch, G Rich, RJ [+details]

Abstract

A method is described for improving availability of a catalog system after a catalog failure, comprising the steps of: (a) limiting access to the catalog, allowing access only to maintenance programs performing recovery of the catalog; (b) recovering the catalog; and (c) orienting users of the catalog to the recovered catalog. Access to the catalog is limited by a locking mechanism. Users who perform catalog maintenance can execute programs to lock the catalog (i.e., allow exclusive use of the catalog to themselves) and recover the catalog. After a catalog is locked, unauthorized users are returned codes indicating that the catalog is unavailable for usage. Once the catalog has been recovered, an authorized user would unlock the catalog to allow other users continued access.