The ALLSPOOL privilege lets the user's process allocate a
spooled device by executing the Allocate Device ($ALLOC) system
service or by using the DCL command ALLOCATE.
The $ALLOC system service lets a process allocate or reserve
a device for its exclusive use. A shareable mounted device cannot
be allocated.
Grant this privilege only to users who need to perform logical
or physical I/O operations to a spooled device. Ordinarily, the
privilege of allocating a spooled device is granted only to symbionts.
HP OpenVMS Guide to System Security
Security for the System Administrator
