Address Space Data Set Usage attributes

This attribute group provides address space-level data set usage information.

ASID Address Space ID in Hexadecimal. The address space ID is a unique number assigned to an address space when it is created. It is used by z/OS to differentiate between address spaces.

Block Size The blocksize of the data set.

Concatenation Number The place in the concatenation of data sets under a DDNAME in which the data set occurs. The first data set in a concatenation will have a value of 1. A data set that is not in a concatenation will have a value of 1. The second data set in a concatenation will have a value of 2, etc.

Data Set Name The name of the allocated data set.

DD name The DDNAME associated with the allocation of this data set to the address space.

Device Number The device number or address where the volume is mounted.

Disposition Status The disposition status of the allocated data set. Either SHR, NEW, etc.

EXCP Count The number of EXCPs issued to the data set.

Job Name Address Space name (JOB/STC name, TSO User ID).

LRECL The logical record length of the data set.

Managed System Managed system name where this data is collected. It has the format: <plexname>:<smfid>:MVSSYS. <plexname> is the sysplex this LPAR resides in. <smfid> is the system's SMF identifier.

Organization The organization of the data set.

  • IS - INDEXED SEQUENTIAL
  • PS - PHYSICAL SEQUENTIAL
  • DA - DIRECT ACCESS
  • CX - COMMUNICATIONS LINE GROUP
  • CQ - DIRECT ACCESS MESSAGE QUEUE
  • MQ - TELECOMMUNICATIONS MSG QUEUE
  • PO - PARTITIONED
  • GS - GRAPHICS
  • TX - TCAM LINE GROUP
  • TQ - TCAM MESSAGE QUEUE
  • VS - VSAM
  • TR - TCAM 3705

Password Protected Data set is password protected.

  • Write=WRT
  • Read-Write=R/W
  • None=N

Record Format The record format of the data set.

Termination Disposition The disposition of the data set upon normal termination. Either DELETE, KEEP, PASS, etc.

Volume Count The number of volumes on which the data set is allocated.

Volume Serial The volume serial number of the device. If the data set is allocated across multiple volumes, only the first volume serial is displayed. A '+' following the volser indicates that this is the first volser of a multivolume data set.