Browse Prior Art Database

Reserve/Release Record-Level Lock For DASD Shared By Multiple Central Processing Units

IP.com Disclosure Number: IPCOM000068179D
Original Publication Date: 1979-Nov-01
Included in the Prior Art Database: 2005-Feb-20

Publishing Venue

IBM

Related People

Authors:
Chandra, AN Katcher, AM Smith, DN [+details]

Abstract

A RESERVE/RELEASE procedure implemented in channel software enables any one of several central processing units (CPUs) sharing a direct-access storage device (DASD) to lock and unlock individual records stored in that device without denying other CPUs access to other records stored therein, regardless of their locations.