Define Space

This task defines VSE/VSAM space that is to be used for the allocation of files. It is recommended that you define space owned by a catalog on the same volume on which the catalog resides. You need the following information:
VOLUME NAME
Enter the six character VOLID of the disk where the space should be defined.
ALL FREE SPACE
Specify whether you want all available space on the volume for VSE/VSAM:
  • 1 - YES
  • 2 - NO

If you specify 1 (YES), all free space (up to 16 extents) on the volume is dedicated to VSE/VSAM.

If you specify 2 (NO), a panel displays the free extents on the volume. Select one extent. Enter the beginning allocation and the amount of space to be allocated.

In some circumstances, VSE/VSAM rounds the specified values to a higher number. If the rounded extent exceeds the original one, the space definition fails. To avoid this, choose values which result in a smaller extent than the one shown.

SPACE AVAILABLE TO CURRENT FILES
Specify whether the files currently owned by the catalog can access the new space for secondary allocation:
  • 1 - YES
  • 2 - NO
If you specify 1 (YES), the dialog alters the catalog entries of the current files so new space can be used for secondary allocation. The dialog changes the catalog entries, if:
  • The secondary allocation for the file is greater than 0.
  • You define new space on disk devices with the same device type code as the primary allocation for the file(s).

If a current file already accesses space on a volume, it keeps that access when you define new space on the same volume.

If you specify 2 (NO), current files cannot access the new space.

FAT-3390 DISK
Specify extended space on a 3390 disk.
  • 1 - YES
  • 2 - NO

If you specify 1 (YES), the dialog defines up to 65520 cylinders of space (3390 ECKD only).

If you specify 2 (NO), the limit of 10017 cylinders is valid. You should specify NO for all other disks.

On the Job Execution panel, select:

   1  -  Delayed, Submission is handled by user
   2  -  Immediate, Job is executed

Option 1 stores the job control statements in a VSE/ICCF library member in your default primary library. The default member name is F$xxxx, where xxxx is your user ID. You can change the name on the panel.

Option 2 automatically runs the job online. The terminal is locked until the job finishes. It also stores the VSE/ICCF member F$xxxx.P (xxxx is your user ID) in your default primary library. If there are no errors, the member contains one record with an asterisk (*). If errors occurred, the control statements and VSE/VSAM (Access Method Services) error messages are stored in this member. You are notified if you should review the contents of the library member.

Note:
  1. For CKD disk devices, the units of allocation are cylinders and not tracks.
  2. If you are using emulated FBA disks or virtual FBA disks, VSE/VSAM can use as VSE/VSAM space the first 4194240 blocks (2 GB) in units of 960 blocks.
  3. If you are using FBA-SCSI disks, VSE/VSAM can use as VSE/VSAM space the first 33546240 blocks (16 GB) in units of 30720 blocks. For further details, refer to Planning.