On UNIX systems, you must set environment variables to enable access to ODBC core components. The is.sh and is.csh shell scripts that set the required variables are provided in the Integration Services home directory.
You must run one of the scripts before starting Integration Server and using ODBC to connect to Data Source databases and OLAP Metadata Catalog databases. You can include the scripts in the login script for the user name that you use to run Integration Server.
Teradata: If you are using Teradata drivers, you must set environment variables to point to the location of the installed drivers.