Dual granularity locking mechanism

US8027963B2 · kind B2 · utility

Assignee

• SAP AG · DE

Inventors

• Ralf Dentzer · Hockenheim, DE
• Detlef Pluemper · Waibstadt, DE
• Udo Klein · Maximiliansau, DE
• Thomas Moser · Wiesloch, DE

Key dates

• Filing date: Dec 30, 2005
• Grant date: Sep 27, 2011
• Expiry date: Oct 8, 2029

Classification

• Technology area (CPC G): Physics
• CPC primary: G06F2209/523
• WIPO field: IT methods for management
• WIPO sector: Electrical engineering

Abstract

A coarse evaluation lock on data is provided to ensure only one evaluation is run on selected data until completed. A fine exclusive lock on selected data is provided to ensure only one user may change such selected data. The locks may be selectively used during evaluations and while users are changing data.