Direct Allocation Using JCL
You can directly allocate VSAM data sets through JCL.
The following example allocates a new data set and, with DATACLAS,
uses the allocation attributes predetermined by the storage administrator
through the ACS routines.
//DD1 DD DSNAME=EXAMPLE1,DATACLAS=DCLAS01,
// DISP=(NEW,KEEP)
See z/OS MVS JCL User's Guide and z/OS MVS JCL Reference for information about JCL keywords.