The environment variable INFORMIXDIR must be set to the directory where you have installed the Informix client.

For example, the following syntax is valid for C-shell users:

For Bourne- or Korn-shell users, the following syntax is valid:

In addition, the INFORMIXSERVER variable must be set to the name of the Informix server (as defined in your $INFORMIXDIR/etc/sqlhosts file). For further details, refer to the Informix documentation.

To access supported remote Informix databases through the Informix driver, you need one of the following: