The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 16, 1996
Filed:
Apr. 14, 1994
Applicant:
Inventors:
David B Lomet, Westford, MA (US);
Peter M Spiro, Nashua, NH (US);
Ashok M Joshi, Nashua, NH (US);
Ananth Raghavan, Nashua, NH (US);
Tirumanjanam K Rangarajan, Nashua, NH (US);
Assignee:
Oracle Corporation, Redwood Shores, CA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06F / ;
U.S. Cl.
CPC ...
395600 ; 39518218 ; 364D / ; 364265 ; 3642689 ; 3642821 ; 3642824 ;
Abstract
A data processing system maintains logs for system and media recovery. The logs contain state identifiers each uniquely identifying the state of a corresponding section of a storage medium, such as a disk. The state identifiers are assigned after changes have been made such that they can be determined from the information in the logs. One implementation involves assigning state identifiers in a known sequence, such as in a monotonically increasing sequence of integers beginning with zero.