Native DataFlex database
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The native DataFlex database is a ISAM based database. Since VDF 11, the native DataFlex database is also called the "embedded" database. This is not a client/server database so that each application connects to the datafile directly. As a result, windows networking optimisation techniques such as opportunistic locking can cause your database files to corrupt.
External Links
http://lists.samba.org/archive/samba/2002-December/058308.html
Regcheck package for automatically disabling oplocks
Opportunistic Locking and Read Caching on Microsoft Windows Networks
