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Erschienen in:
2010 | OriginalPaper | Buchkapitel
Locking and Latching
Erschienen in: Expert Oracle Database Architecture
Verlag: Apress
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One of the key challenges in developing multiuser, database-driven applications is to maximize concurrent access and, at the same time, ensure that each user is able to read and modify the data in a consistent fashion. The locking mechanisms that allow this to happen are key features of any database, and Oracle excels in providing them. However, Oracle’s implementation of these features is specific to Oracle—just as SQL Server’s implementation is to SQL Server—and it is up to you, the application developer, to ensure that when your application performs data manipulation, it uses these mechanisms correctly. If you fail to do so, your application will behave in an unexpected way, and inevitably the integrity of your data will be compromised (as was demonstrated in Chapter 1 “Developing Successful Oracle Applications”).