FreeTDS User Guide: A Guide to Installing, Configuring, and Running FreeTDS
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# ODBC-combined configuration

Like the DSN-less configuration, ODBC-combined keeps server properties in `freetds.conf`. The difference is, your applications can refer to the server by its DSN. To make that possible, the DSN entry in `odbc.ini` refers to the dataserver entry in `freetds.conf`.

Example 4-5. Sample ODBC-combined `odbc.ini` file

    [ODBC Data Sources][1]
     JDBCdsn = Sybase JDBC Server

    [JDBCdsn]
    Driver          = /usr/local/freetds/lib/libtdsodbc.so
    Description     = Sybase JDBC Server
    Trace           = No
    Servername      = JDBC[2]
    Database        = pubs2

    [Default]
    Driver          = /usr/local/freetds/lib/libtdsodbc.so

Example 4-6. Sample ODBC-combined `freetds.conf` file

    ;
    ; freetds.conf
    ;
    [JDBC]
            host = jdbc.sybase.com
            port = 4444
            tds version = 5.0

With this arrangement, an application can connect to the server in two ways, via its DSN (`JDBCdsn`), or its dataserver name (`JDBC`).

### Notes

[1] | Several DSNs might be listed here. In this example, we have only one, "JDBCdsn". It matches the `[JDBCdsn]` entry later in the file.
[2] | Refers to the `[JDBC]` entry in `freetds.conf`.

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