Files or raw disk devices that the database server uses must have the appropriate ownership and permissions.
On UNIX, the owner and group must be informix, and the permissions must be set to read and write for both the user and the group (but not for others).
If you want users other than informix or root to execute ON–Bar commands, create a bargroup group. Only members of bargroup can execute ON–Bar commands. The bargroup group is not created automatically during database server installation. For instructions on creating a group, see the IBM Informix Dynamic Server Installation Guide for UNIX and Linux or your UNIX documentation.
On Windows, files must be owned by a member of the Informix-Admin group. The Informix-Admin group is created automatically when you install the database server.