Example 2.13. Example properties for Microsoft SQL Server
openjpa.ConnectionDriverName: com.microsoft.sqlserver.jdbc.SQLServerDriver openjpa.ConnectionURL: \ jdbc:sqlserver://SERVER_NAME:1433;DatabaseName=DB_NAME;selectMethod=cursor;sendStringParametersAsUnicode=false
SQL Server date fields are accurate only to the nearest 3 milliseconds, possibly resulting in precision loss in stored dates.
The ConnectionURL must always contain the "
sendStringParametersAsUnicode=false to the
ConnectionURL may significantly increase performance.
The Microsoft SQL Server driver only emulates batch updates. The DataDirect JDBC driver has true support for batch updates, and may result in a significant performance gain.
Floats and doubles may lose precision when stored.
TEXT columns cannot be used in queries.
When using a SQL Server instance that has been configured to be case-sensitive in schema names, you need to set the "schemaCase=preserve" parameter in the openjpa.jdbc.DBDictionary property.
SQL Server 2005 does not support native sequences. If you would like to use generated values with SQL Server you should use GenerationType.IDENTITY, GenerationType.TABLE, or GenerationType.AUTO.
The use of LOB streaming is limited. When reading LOB data from the database, the Microsoft SQL Server driver will actually load all the data into memory at the same time.