*Conan The Librarian
Makes an allocated device available to other processes (but
does not deassign any logical name associated with the device).
DEALLOCATE does not deallocate devices that are in use.
Name of the device to be deallocated. The device name can be a
physical device name or a logical name that is not in use. On a
physical device name, the controller defaults to A and the unit
to 0. This parameter is incompatible with the /ALL qualifier.
2.1 - /ALL
Deallocates all devices currently allocated by your process that
are not in use. This qualifier is incompatible with the device-
1.$ DEALLOCATE DMB1:
In this example, the DEALLOCATE command deallocates unit 1 of
the RK06/RK07 devices on controller B.
2.$ ALLOCATE MT: TAPE
%DCL-I-ALLOC, _MTB1: allocated
$ DEALLOCATE TAPE:
In this example, the ALLOCATE command requests that any
magnetic tape drive be allocated and assigns the logical
name TAPE to the device. The response to the ALLOCATE command
indicates the successful allocation of the device MTB1. The
DEALLOCATE command specifies the logical name TAPE to release
the tape drive.
In this example, the DEALLOCATE command deallocates all devices
that are currently allocated.