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:
Feb. 25, 2025
Filed:
Mar. 31, 2022
Unisys Corporation, Blue Bell, PA (US);
Kelsey L. Bruso, Minneapolis, MN (US);
James M. Plasek, Eagan, MN (US);
Unisys Corporation, Blue Bell, PA (US);
Abstract
A processor-based method of making a file containing a secondary index recoverable during processing of the secondary index includes: capturing a current system time as a captured system time and writing the captured system time to control information; finding writes to the file containing the secondary index; also writing the writes to an audit trail; using the captured system time in control information for the secondary index as a start time for recovery; determining if there is a primary key value in the control information; using a primary key value in the control information to traverse to a data page continuing the primary key value; placing a read-lock on the data page; creating a corresponding secondary index entry; and releasing the read-lock.