DBLANG

The DBLANG environment variable specifies the subdirectory of $INFORMIXDIR or the full pathname of the directory that contains the compiled message files that an IBM Informix product uses.

By default, IBM Informix products put compiled messages in a locale-specific subdirectory of the $INFORMIXDIR/msg directory. These compiled message files have the file extension .iem. If you want to use a message directory other than $INFORMIXDIR/msg, where, for example, you can store message files that you create, you must perform the following steps:

To use a message directory other than $INFORMIXDIR/msg

Use the mkdir command to create the appropriate directory for the message files.
You can make this directory under the directory $INFORMIXDIR or $INFORMIXDIR/msg, or you can make it under any other directory.
Set the owner and group of the new directory to informix and the access permission for this directory to 755.
Set the DBLANG environment variable to the new directory. If this is a subdirectory of $INFORMIXDIR or $INFORMIXDIR/msg, then you need only list the relative path to the new directory. Otherwise, you must specify the full pathname of the directory.
Copy the .iem files or the message files that you created to the new message directory that $DBLANG specifies.
All the files in the message directory should have the owner and group informix and access permission 644.

IBM Informix products that use the default U.S. English locale search for message files in the following order: