Table 1 lists the DDM access
method commands supported for DFM sequential files.
Table 1. DDM Access Method
Commands Supported for Distributed FileManager Sequential Files| Access Commands |
RELRNBAM |
RNDRNBAM |
CMBRNBAM |
STRAM |
|---|
| CHGEOF |
... |
... |
... |
YES* |
| CLOSE |
YES |
YES |
YES |
YES |
| DELREC |
YES# |
YES# |
YES# |
... |
| FRCBFF |
YES |
YES |
YES |
YES |
| GETREC |
YES |
YES |
YES |
... |
| GETSTR |
... |
... |
... |
YES |
| INSRECEF |
YES |
YES |
YES |
... |
| INSRECNB |
... |
YES+ |
YES+ |
... |
| LCKSTR |
... |
... |
... |
YES |
| MODREC |
YES |
YES |
YES |
... |
| OPEN |
YES |
YES |
YES |
YES |
| PUTSTR |
... |
... |
... |
YES* |
| SETBOF |
YES |
YES |
YES |
... |
| SETEOF |
YES@ |
YES@ |
YES@ |
... |
| SETFRS |
YES |
YES |
YES |
... |
| SETLST |
YES@ |
YES@ |
YES@ |
... |
| YES |
... |
YES |
... |
|
| ... |
YES |
YES |
... |
|
| SETNXT |
YES |
... |
YES |
... |
| YES |
... |
YES |
... |
|
| YES |
... |
YES |
... |
|
| NO |
YES |
YES |
... |
|
| UNLIMPLK |
YES |
YES |
YES |
... |
| UNLSTR |
... |
... |
... |
Yes |
Legend: - YES
- The command is supported.
- NO
- The command is not supported.
- ...
- The command does not apply to the access method.
- #
- DELREC is only supported for RRDSs and VRRDSs.
- @
- SETEOF and SETLST are not supported for PDS members.
- +
- INSRECNB returns “duplicate record number” for PDSE members and
PDS members.
- *
- DFM limits stream access to read-only support for VRRDS and RRDS
data sets. All stream access to non-reusable VSAM data sets is read-only.
|
z/OS DFSMS DFM Guide and Reference
Copyright IBM Corporation 1990, 2014