dlbl filel b (extent DMSDLB331R ENTEF EXTENT SPECIFICATIONS: 100 60, 400 80, 60 40 d 200 100 c 400 100 c
(null line)
DLBL
specifies extents on disks accessed at modes B, C,and D. Since B is
the mode specified on the DLBL command line, it does notqeed to be
respecified along with the extent information.• A DASD volume must be mounted and accessed for each mode referenced
in an extent.When you are finished entering extent information, you must enter a
null line to terminate the DLBL command sequence. If you do not, anerroL may result and you will have to reenter the entire DLBL command.
If you make any error entering the extents, you must reenter all the
extent information.
TheOLBL command does not check the extents to see if they are on cylindeL boundaries or that they are entered in the proper If
you do not enter them correctly, the access method services DEFINE
function terminates with an error.CMS assigns sequence numbers to the extents according to the order in
which theywere entered. These sequence numbers are listed when you use
theLISTDS command with the EXTENT option. When you want to execute a program
or use access method services to reference an existing multivolumeVSAM data set, you must use the MULT option on the DLBL command that
identifies the file.When you use the MULT option, you are prompted to enter additional
disk mode letters, as follows:
dlbl infile c (multDMSDLB330R ENTER VOLUME SPECIFICATIONS: d, e, f
g
(null line)
The above example identifies a file that has extentson disks accessed
at modes C, D, E,P, and G. The rules for entering multiple extents are: • All disks must be mounted and accessed when you issue the DLBL
command.• You must not repeat the mode letter of the disk that is entered on
the DLBL command line (C in the above example)• • If you enter more than one mode letter on a line, they must be
separated by commas; trailing commas on a line are ignored.• A maximum of nine disks may be specified; you do not need to specify
them in alphabetical order.You must enter a null line to terminate the
finished entering extents; if not, an error mayre-enteL the entire command sequence.
command when
result and
you are
you mustSection 2. Commands 69
(null line)
DLBL
specifies extents on disks accessed at modes B, C,
the mode specified on the DLBL command line, it does not
respecified along with the extent information.
in an extent.
null line to terminate the DLBL command sequence. If you do not, an
If you make any error entering the extents, you must reenter all the
extent information.
The
you do not enter them correctly, the access method services DEFINE
function terminates with an error.
which they
the
or use access method services to reference an existing multivolume
identifies the file.
disk mode letters, as follows:
dlbl infile c (mult
g
(null line)
The above example identifies a file that has extents
at modes C, D, E,
command.
the DLBL command line (C in the above example)
separated by commas; trailing commas on a line are ignored.
them in alphabetical order.
finished entering extents; if not, an error may
command when
result and
you are
you must