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Management of Logical and Physical Data Failures

IP.com Disclosure Number: IPCOM000050717D
Original Publication Date: 1982-Dec-01
Included in the Prior Art Database: 2005-Feb-10

Publishing Venue

IBM

Related People

Authors:
Crus, RA Gumaer, RA Putzolu, GR [+details]

Abstract

This article describes a method for persistently maintaining knowledge of write errors and of read errors during Data Base processing in order to assure data integrity where a physical error is intermittent. Logically inconsistent data is detected, and further normal access inhibited until the inconsistent data is repaired. Information stored in a Data Base can become unavailable because of logical inconsistencies in the stored data format (i.e., bad pointers) or because of physical failures of the supporting media. It is desirable to limit the amount of data which becomes unavailable because of the above reasons.