skip to main content
Using the Driver : Configuring and Connecting to Data Sources : Configuring the Product on UNIX/Linux : Data Source Configuration on UNIX/Linux : Configuring a Data Source in the System Information File

Try DataDirect Drivers Now
Configuring a Data Source in the System Information File
To configure a data source manually, you edit the odbc.ini file with a text editor. The content of this file is divided into three sections.
At the beginning of the file is a section named [ODBC Data Sources] containing data_source_name=installed-driver pairs, for example:
Oracle Wire Protocol=DataDirect Oracle Wire Protocol
The driver uses this section to match a data source to the appropriate installed driver.
The [ODBC Data Sources] section also includes data source definitions. The default odbc.ini contains a data source definition for each driver. Each data source definition begins with a data source name in square brackets, for example, [Oracle Wire Protocol 2]. The data source definitions contain connection string attribute=value pairs with default values. You can modify these values as appropriate for your system. See "Connection Option Descriptions" for descriptions of these attributes. See "Sample odbcinst.ini File" for sample data sources.
The second section of the file is named [ODBC File DSN] and includes one keyword:
This keyword defines the path of the default location for file data sources (see "File Data Sources").
Note: This section is not included in the default odbc.ini file that is installed by the product installer. If you are using file data sources, you must add this section manually.
The third section of the file is named [ODBC] and includes several keywords, for example:
The IANAAppCodePage keyword defines the default value that all UNIX/Linux drivers use if individual data sources have not specified a different value. See "IANAAppCodePage" and "Code Page Values" for details. The default value is 4.
The InstallDir keyword must be included in this section. The value of this keyword is the path to the installation directory under which the /lib and /locale directories are contained. The installation process automatically writes your installation directory to the default odbc.ini file.
For example, if you choose an installation location of /opt/odbc, then the following line is written to the [ODBC] section of the default odbc.ini:
Note: If you are using only DSN-less connections through an odbcinst.ini file and do not have an odbc.ini file, then you must provide [ODBC] section information in the [ODBC] section of the odbcinst.ini file. The drivers and Driver Manager always check first in the [ODBC] section of an odbc.ini file. If no odbc.ini file exists or if the odbc.ini file does not contain an [ODBC] section, they check for an [ODBC] section in the odbcinst.ini file. See "DSN-less Connections" for details.
ODBC tracing allows you to trace calls to ODBC drivers and create a log of the traces for troubleshooting purposes. The following keywords all control tracing: Trace, TraceFile, TraceDLL, ODBCTraceMaxFileSize, and ODBCTraceMaxNumFiles.
For a complete description of these keywords and discussion of tracing, see "ODBC Trace".
* Sample Default odbc.ini File