You can allocate a new generation data set in a GDG from
the Remote Systems view.
You need to be connected to a z/OS® system
and to have defined a generation data group.
To allocate a new generation data set in the Remote
Systems view, do these steps:
- In the MVS Files note of the Remote
Systems view, select a generation data group and then click New
> Allocate Generation Data Set on the pop-up menu. The Allocate Generation Data Set wizard
opens.
- Complete the fields on this wizard as follows:
- Host Short Name
- Shows the name of the remote system to which you are connected.
- Generation Data Group
- Shows the name of the generation data group in which the new data
set will be allocated.
- Generation Data Set
- Specify either a relative generation number in the form of (+n)
or the absolute generation number in the form of GxxxxVyy.
The default is (+1).
Relative: To create
a relative GDS name, select this option and type a generation number
in the text field.
Absolute: To create
an absolute GDS name, select this option and then type the generation
number in the G field and a version number
in the V field.
- Click Next to specify data set allocation
characteristics.
- On the Data Set Allocation page, you indicate one of three
ways to begin specifying allocation values such as record format,
record length, and block size. You select one of three radio buttons:
- If you select Copy characteristics from an existing
generation data set, click Browse. At
the displayed window, expand the entry that identifies the high-level
qualifier, then click the name of a data set that can act as a model
for your new data set. To return to the Data Set Allocation page,
click OK or Cancel:
- To retain the name of the model data set, click OK;
or
- To avoid retaining any name when you return to the Data Set Allocation
page, click Cancel.
- If you select Specify characteristics by usage
type, you select a value from each of two list boxes:
- The Category list box indicates a kind
of content: Source, Listing, or Other
- The Type list box gives a further categorization;
within Source, for example, are COBOL, PL/I, ASM, REXX, and JCL
- If you select Specify characteristics (advanced
allocation), the allocation values for you to customize
are the values that were most recently in place. Use this selection
after allocating the first in a series of equivalently structured
data sets.
- To display the Data Set Characteristics page (where you
set the actual allocation values), click Next.
- Specify the allocation values. For details on what values
are required for different uses, contact your z/OS system administrator. The administrator
can also inform you whether you need to click System Managed
Storage to assign a data set to a particular class. Rational® Developer
for System z® enforces certain
rules for record format (RECFM), record length (LRECL), and block
size (BLKSIZE). See Data set allocation rules for
information.
- Click Finish to allocate the new
generation data set.