DLBL • If you enter they must be
ignored.
more than one mode letter and logical unit
separated by commas; trailing commas on
on a line,
a line are• 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 may
reenter the entire command sequence.
command when
result and
you are
you must
In order to display the volumes on which all multivolume data sets
reside, the following commands are issued:
DLBL(MULT) or QUERY DLBL MULT The following information concerning multiple volume datasets is
provided:MODE LOGUNIT The DOS filename or OS ddname.
TheCMS disk mode identifying one of the disks on which the
dataset resides.
TheDOS logical unit specification (SYSxxx). This operand
will be blank for a data set defined while inCMS/OS environment; that is, the SET DOS ON command had not been
issued at OLBL definition time.
If no OLBL definitions with multiple volume specifications are
active, the following is issued: OMSOLB324I NO USER DEFINED MULTS IN EFFECT USING CATALOGS: There are two special ddnames you must use to catalog and job catalog:
IJSYSCT IJSYSUC identifies the master catalog when you initially define it
(usingAMSERV), and when you begin a terminal session. You should use the PERM option when you define it. You must assign the logical unit SYSCAT to the disk on which
the master catalog resides. If you are redefining a master
catalog that has already been identified, you may omit theSYSCAT option on the DLBL command line.
identifies a job catalog to be used for subsequentAKSERV jobs
orVSAM programs. Any programmer logical unit may be used to assign a job
catalog.Only one VSAM catalog is ever searched when a VSAM function is
performed. If a job catalog is defined, you may override it by using
theCAT option on the DLBL command for a data set. The following OLBL
command sequence illustrates the use of catalogs:
assgn syscat c
dlbl ijsysct c dsn mastcat (perm syscat
identifies the master catalog,MASTCAT, for the terminal session.
66 IBMVM/370 CMS Command and Macro Reference
ignored.
more than one mode letter and logical unit
separated by commas; trailing commas on
on a line,
a line are
them in alphabetical order.
finished entering extents; if not, an error may
reenter the entire command sequence.
command when
result and
you are
you must
In order to display the volumes on which all multivolume data sets
reside, the following commands are issued:
DLBL
provided:
The
dataset resides.
The
will be blank for a data set defined while in
issued at OLBL definition time.
If no OLBL definitions with multiple volume specifications are
active, the following
IJ
(using
the master catalog resides. If you are redefining a master
catalog that has already been identified, you may omit the
identifies a job catalog to be used for subsequent
or
catalog.
performed. If a job catalog is defined, you may override it by using
the
command sequence illustrates the use of catalogs:
assgn syscat c
dlbl ijsysct c dsn mastcat (perm syscat
identifies the master catalog,
66 IBM