0P17 FILE PROT
Cause: Unit check. A command that resulted in a command reject was issued to a tape that is
file-protected and positioned at its load point. For a DASD file, this message indicates a set
file mask notation. It can be caused by an illegal seek operation. On a system with DASD file
protection, it can also indicate an attempt to write on SYSRES.
Programmer Action: The probable errors are:
· A channel operation, such as a write or seek, was attempted after the file mask was set.
· A second long seek attempted although the supervisor supports seek separation.
· An invalid CCW command or command sequence was detected.
Check these conditions by obtaining a system dump (supervisor and partitions) at the time of
the failure and by inspecting the channel operations requested by the program. The CCW chain
is pointed to by bytes 8-11 of the CCB addressed in the message.
Operator Action: Check that the proper tape has been mounted and that the file protect ring
has been inserted. See Figure 4 at the beginning of this section.
If the problem recurs, obtain a system dump (see DOS/VS SADP) and have the
· output .
· ROD command output
· EREP output (see DOS/VS SADP)
· log sheet
· program listing
available for problem determination.
Used with Courtesy and Permission of International Business Machines, Inc.