DSORG specifies the organization of the data set as physical sequential
(PS), partitioned (PO), or direct (DA). If the data set is processed
using absolute rather than relative addresses, you must mark it as
unmovable by adding a U to the DSORG parameter (for example, by coding
DSORG=PSU). You must specify the data set organization in the DCB
macro. In addition:
- When creating a direct data set, the DSORG in the DCB macro must
specify PS or PSU and the DD statement must specify DA or DAU.
- PS is for sequential and extended format DSNTYPE.
- PO is the data set organization for both PDSEs and PDSs. DSNTYPE
is used to distinguish between PDSEs and PDSs.
Unmovable and IS data sets cannot be system managed.