Record-level locking and page-level recovery in a database...

Details Record-level locking and page-level recovery in a database... Record-level locking and page-level recovery in a database...

2011-06-21

2011-06-21

Stace, Brent (Department: 2161)

Data processing: database and file management or data structures

File or database maintenance

Database recovery

C707S703000, C707S704000

Reexamination Certificate

active

07966298

ABSTRACT:
Disclosure of approaches for processing database transactions against a database. In one approach, a first transaction is received that specifies an operation for changing state of a first record stored in a first database page. In processing the operation, the state of the record is changed, and information is stored in a companion page. The information includes a transaction identifier, data describing the specified operation, a page identifier of the first page, a before look and an after look of the first record for an update operation, and an after look of the first record for an insert operation. In response to a commit of the first transaction, a process determines whether a second transaction, that specifies a change in state for a second stored in the first page, is in-process. In response to determining that the second transaction is in process, the companion page is stored in an audit trail. In response to determining that no such second transaction is in process, a transaction identifier of the first transaction and associated data of the first page are stored in the audit trail.

REFERENCES:
patent: 5287501 (1994-02-01), Lomet
patent: 5465328 (1995-11-01), Dievendorff et al.
patent: 5485608 (1996-01-01), Lomet et al.
patent: 5561795 (1996-10-01), Sarkar
patent: 5596754 (1997-01-01), Lomet
patent: 5884328 (1999-03-01), Mosher, Jr.
patent: 6879981 (2005-04-01), Rothschild et al.
patent: 7809759 (2010-10-01), Bruso et al.
patent: 2002/0165724 (2002-11-01), Blankesteijn
patent: 2003/0105732 (2003-06-01), Kagalwala et al.
patent: 2005/0102250 (2005-05-01), Carr et al.

Affiliated with

Also associated with

Rating

Record-level locking and page-level recovery in a database... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Record-level locking and page-level recovery in a database..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Record-level locking and page-level recovery in a database... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2662889