DD DSNTYPE Parameter
DD DSNTYPE Parameter
Note! DSNTYPE parameter is required only when we are creating a dataset.
DSNTYPE parameter is used to specify the dataset type with the DD statement. This parameter is always used while creating a dataset and tells the system that what kind of dataset it is. DSNTYPE is an optional parameter.
Syntax -
DSNTYPE={LIBRARY}
{(LIBRARY,1)}
{(LIBRARY,2)}
{HFS }
{PDS }
{PIPE }
{EXTREQ }
{EXTPREF}
{LARGE }
{BASIC }| LIBRARY | Specifies partitioned dataset extended (PDSE). |
| (LIBRARY,1) | Specifies a version 1 partitioned dataset extended (PDSE). |
| (LIBRARY,2) | Specifies a version 2 partitioned dataset extended (PDSE). |
| HFS | Specifies Hierarchical file system (HFS) dataset. |
| PDS | Specifies a partitioned dataset (PDS). |
| PIPE | Specifies a A first-in, first-out (FIFO) special file. |
| EXTREQ (EXTREQ,1) (EXTREQ,2) |
Specifies for the dataset to be extended format. (EXTREQ,1) specifies a version 1 extended format dataset. (EXTREQ,2) specifies a version 2 extended format dataset. |
| EXTPREF (EXTPREF,1) (EXTPREF,2) |
Specifies for the dataset to be extended format. (EXTPREF,1) specifies a version 1 extended format dataset. (EXTREQ,2) specifies a version 2 extended format dataset. |
| LARGE | The system selects a large format if the dataset is sequential (DSORG=PS or PSU). |
| BASIC | The system will select a basic format if the dataset is sequential (DSORG=PS or PSU). |
Examples -
Scenario - Define PDS.
//NEWPDS DD DSN=MTH.DATA.PSFILE,
// DISP=(NEW,CATLG,DELETE),
// UNIT=SYSDA,
// SPACE=(TRK,(3,2,2),RLSE),
// DCB=(RECFM=FB,LRECL=80,BLKSIZE=1600),
// DSNTYPE=PDS