The next panel you see allows you to specify an action and a data
set name. Because you want to allocate a new data set, type
A on
the OPTION line. Then specify the three data set qualifiers in the
three ISPF LIBRARY fields.
------------------------------- DATA SET UTILITY -----------------------------
OPTION ===> a
A - Allocate new data set C - Catalog data set
R - Rename entire data set U - Uncatalog data set
D - Delete entire data set S - Data set information (short)
blank - Data set information
ISPF LIBRARY:
PROJECT ===> prefix
GROUP ===> test
TYPE ===> data
OTHER PARTITIONED OR SEQUENTIAL DATA SET:
DATA SET NAME ===>
VOLUME SERIAL ===> (If not cataloged, required for option "C")
DATA SET PASSWORD ===> (If password protected)
When you press the Enter key, you see a panel with a column of
input fields that specify the details of allocating a data set. When
you finish typing information in the fields, press the Enter key to
create the data set.
Allocate New Data Set---------------------------- ALLOCATE NEW DATA SET ---------------------------
COMMAND ===>
DATA SET NAME: PREFIX.TEST.DATA
VOLUME SERIAL ===> (Blank for authorized default volume)*
GENERIC UNIT ===> (Generic group name or unit address)*
SPACE UNITS ===> blks (BLKS, TRKS or CYLS)
PRIMARY QUAN ===> 20 (in above units)
SECONDARY QUAN ===> 10 (in above units)
DIRECTORY BLOCKS ===> 0 (0 for sequential data set)
RECORD FORMAT ===> FB
RECORD LENGTH ===> 80
BLOCK SIZE ===> 800
EXPIRATION DATE ===> (YY/MM/DD
YY.DDD in Julian form
DDDD for retention period in days
or blank)
( * Only one of these fields may be specified)
The previous panel shows an example of values for creating a sequential
data set. However, you might want to find out the values your installation
recommends.
Basically the fields on the Allocate New Data Set panel determine
data set attributes, such as:
- On which storage device the data set goes (VOLUME SERIAL, GENERIC
UNIT). You can leave these fields blank.
- Size of the space (SPACE UNITS, PRIMARY QUANTITY, SECONDARY QUANTITY).
- The amount of space needed for a PDS directory (DIRECTORY BLOCKS).
The general rule is one directory block for every six members.
- The kind of records you want in the data set (RECORD FORMAT, RECORD
LENGTH, BLOCK SIZE).
- How long you want to keep the data set (EXPIRATION DATE). You
may leave this field blank.
For more information about these fields, press the HELP PF key
(PF 1) while the Allocate New Data Set panel is displayed, or see z/OS TSO/E User's Guide.
Note: When you display the Allocate New Data Set panel, the fields
generally show the values from the previous allocation. If you want
to allocate a data set with the same attributes as an existing data
set, specify the existing data set name on the Data Set Utility panel
and leave the OPTION line blank. After the data set information is
displayed for the existing data set, you can return to the Data Set
Utility panel, specify the new data set name, enter A on
the OPTION line, and the correct attributes appear on the Allocate
New Data Set panel.
Exercise |
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Create a sequential data set by following
the example starting at Creating a data set in ISPF/PDF.
When you press the Enter key on the last panel, your data set is
created and you see in the upper right-hand corner of the panel, the
message: DATA SET ALLOCATED
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