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. 12, 2010
Filed:
Mar. 15, 2006
Robert W. Lyle, Morgan Hill, CA (US);
Michael J. Winer, Markham, CA;
Robert W. Lyle, Morgan Hill, CA (US);
Michael J. Winer, Markham, CA;
International Business Machines Corporation, Armonk, NY (US);
Abstract
A method for estimating the first access time of a plurality of currently active transactions accessing at least one database object are disclosed. In one aspect, the method may include providing a storage area of a particular size to store data for a plurality of groups corresponding to the at least one database object. Each of the plurality of groups corresponds to a particular time interval. The method includes placing each of the currently active transactions in a group of the plurality of groups based upon a time of a first access of the at least one database object by each of the currently active transactions and the particular time interval. The method also includes storing a group first access time for the group. The group first access time corresponds to the earliest first access time for any of the currently active transactions in the group. The method may also include defining the object's first, or earliest access time, to be the earliest group first access time for currently active groups.