The Question is:
What is the difference between concurrent and interactive licenses
The Answer is :
Interactive licenses are available on OpenVMS VAX only.
Concurrent licenses are available on OpenVMS VAX and OpenVMS Alpha.
Both a concurrent and an interactive user are users that are not logged
into the OpenVMS system directly, and users that do not pass through
LOGINOUT or the normal interactive login process, and that have no
particular direct access to DCL or similar OpenVMS features -- these
users are expected to be dedicated to a particular set of applications
and to a predetermined application environment.
Please see the OpenVMS Software Product Description (SPD) for specific
details on the OpenVMS licensing options and requirements. Depending
on the OpenVMS release, the SPDs are available at: