When you define a non-VSAM data set in a catalog, the data set
is not protected with passwords in its catalog entry.
Two levels of protection options for your data set are available.
Specify these options in the LABEL field of a DD statement with the
parameter PASSWORD or NOPWREAD. See
z/OS MVS JCL Reference.
- Password protection (specified by the PASSWORD parameter) makes
a data set unavailable for all types of processing until a correct
password is entered by the system operator, or for a TSO/E job by
the TSO/E user.
- No-password-read protection (specified by the NOPWREAD parameter)
makes a data set available for input without a password, but requires
that the password be entered for output or delete operations.
The system sets the data set security indicator either in the standard
header label 1, as shown in z/OS DFSMS Using Magnetic Tapes, or in the data
set control block (DSCB). After you have requested security protection
for magnetic tapes, you cannot remove it with JCL unless you overwrite
the protected data set.