PowerCenter All Products
Name of the operating system profile. The name is not case sensitive and must be unique within the domain. It cannot exceed 128 characters or begin with @. It also cannot contain the following special characters:
% * + \ / ? ; < >
The name can contain an ASCII space character except for the first and last character. All other space characters are not allowed.
System User Name
Name of an operating system user that exists on the machines where the Integration Service runs. The Integration Service runs workflows or jobs using the system access of the system user defined for the operating system profile.
When you create operating system profiles, you cannot specify the system user name as root or use a non-root user with uid==0.