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:
Aug. 08, 2006
Filed:
Nov. 21, 2002
Rushan Chen, Belmont, CA (US);
Bhaskar Ghosh, Burlingame, CA (US);
Rushan Chen, Belmont, CA (US);
Bhaskar Ghosh, Burlingame, CA (US);
Oracle International Corporation, Redwood Shores, CA (US);
Abstract
A method is described for parallel processing of sequence operations, in which contention for the sequence operation is reduced among multiple parallel processes. Contention is reduced by caching sequence values locally for each parallel process. Each process accesses the sequence operation, or an instance level cache of sequence values, in a batched manner, thereby returning a block of unique sequence values instead of a single sequence value. The block of sequence values, or at least information that indicates a range of sequence values that define the block, is then cached locally in association with a given process of the multiple processes. Hence, future requests for sequence values from the given process are serviced from the local cache, rather than having to access the sequence operation and risk contention for the operation with other processes.