Allocation locks and their use

Details Allocation locks and their use Allocation locks and their use

2011-07-12

2011-07-12

Cottingham, John R. (Department: 2167)

Data processing: database and file management or data structures

Data integrity

Concurrent read/write management using locks

C707S613000

Reexamination Certificate

active

07979408

ABSTRACT:
Systems and methodologies are provided that employ an allocation lock, which permits only a single transaction to acquire space on a particular page at any one time. The allocation lock of the present invention facilitates operations of concurrent transactions at a subpage level (e.g., a row level), and in conjunction with a heap manager can enforce a set of conditions such that prior to a commit stage of a transaction, a space availability for a particular page can be typically assured (e.g., that transactions operating on various copies of the page do not consume all of storage space on that page), and reorganization of data around the page is mitigated (e.g., that a transaction need not move data around the page for purpose of merging various copies.)

REFERENCES:
patent: 5544345 (1996-08-01), Carpenter et al.
patent: 5551027 (1996-08-01), Choy et al.
patent: 5717919 (1998-02-01), Kodavalla et al.
patent: 5960446 (1999-09-01), Schmuck et al.
patent: 6938039 (2005-08-01), Bober et al.
patent: 7234076 (2007-06-01), Daynes et al.

Affiliated with

Also associated with

Rating

Allocation locks and their use does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Allocation locks and their use, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Allocation locks and their use will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2703261