Volume information is NOT stored in the Directory (CXX) however, the data set name is known most of the time in z/OS and also in z/VSE when CA-DYNAM/D is in use. In the case where the data set name is known, the z/OS catalog or CA-DYNAM/D catalog is queried to get a list of volume serial numbers for cataloged areas. Each known volume serial number for each data set is represented in this table with a unique record.
|
Column Name |
SQL Data Type |
Nullable |
Description |
|---|---|---|---|
|
AREA_NAME
|
CHAR(3) |
No |
Contains CXX for the Directory row, IXX for each Index Area row, or the data area name for each data area row. |
|
DBID
|
SMALLINT |
No |
Contains zero for the Directory row, else contains the database ID where the area is contained. |
|
DIR_NAME
|
CHAR(8) |
No |
Contains the name of the Directory used by the MUF. |
|
VOLSER
|
CHAR(6) |
No |
Volume serial number which contains one or more extents of this area. |
|
VOLUME_SEQ
|
SMALLINT |
No |
Within one area, contains the sequence number of this volume serial. The volume containing the first extent (or set of extents) has a sequence number of 1. The volume (if any) containing the next extent (or set of extents) has a sequence number of 2, and so forth. |
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