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:
Sep. 22, 2026
Filed:
Dec. 03, 2024
International Business Machines Corporation, Armonk, NY (US);
Alexander French, Toronto, CA;
Walid Rjaibi, Markham, CA;
Kirby Chin, Richmond Hill, CA;
Kamran Mirshahi, Holland Landing, CA;
Junseo Hwang, London, CA;
International Business Machines Corporation, Armonk, NY (US);
Abstract
Systems, methods are provided for encrypting, decrypting, re-encrypting an existing database with neither downtime nor storage overhead. Create a list of tables to be processed. Identify status of each table by an indicator in a database catalog. Store a second status in each data page. Select a table to process from list of tables. Issue a table lock against the selected table. Select a configurable number of data pages to process during the duration of the table lock. Following the processing, flush the data pages to storage. If there are no more data pages to encrypt for the selected table, remove the selected table from the list of tables to be processed. Release the table lock. If there are more data pages to process in the selected table, and there are waiters for the selected table, release the table lock; select another table from the list of tables to process.