VMS logicals are set in the system or group logical table and are visible with the system command, show logical/system or show logical/group. These are in effect before, during, and after Ingres is invoked. II_SYSTEM is the only VMS logical required and used directly by Ingres. This logical is defined by the system administrator using the following VMS command entered at the operating system prompt:

The value assigned to the Ingres logical must be enclosed in double quotes.

This definition is typically placed in the operation-system wide command procedure for defining site-specific logical names (sys$manager:sylogicals.com).