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:
May. 20, 2003
Filed:
May. 23, 2000
Robert W. Lyle, Morgan Hill, CA (US);
James Z. Teng, San Jose, CA (US);
Jay A. Yothers, Gilroy, CA (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
Database tables which are to be loaded with large data objects (LOBs) are defined with a special logging attribute value. This attribute value causes the database management system to suspend recovery logging for the databases so defined, but to continue with the logging of control information, such as space management changes. Certain control information recovery log entries have a special status indicator. For LOBs, this status indicator is set to cause the associated LOB entry to be marked as invalid when the log entry is reapplied, for example, during a recovery operation from a media failure. Rather than invalidating the entire table, the database management system will only prevent access to the entries which have been invalidated during the recovery process.