OUTDATASET: Specifying the output location for the PATCH results

Explanation: OUTDATASET(dsname) is an optional parameter specifying the name of the data set where DFSMShsm is to write the output data.

For dsname, substitute the fully qualified name of the data set that is to receive the PATCH results. If the data set does not exist, DFSMShsm dynamically allocates and catalogs an output data set with the following characteristics:

The data set name specified (dsname)
Record format of FBA
Logical record length of 121
Primary allocation of 20 tracks (see note)
Secondary allocation of 50 tracks (see note)
Unit type of SYSALLDA (see note)
System reblockable

If the data set already exists:

It must be cataloged and on DASD.
The record format must be FBA.
The logical record length must be 121.
The data set must be system reblockable.
The user can choose the primary space allocation.
If DFSMShsm needs additional extents after the primary space allocation, DFSMShsm uses a secondary space allocation of 50 tracks (see note).
If the data set does not contain data, DFSMShsm starts writing output data at the beginning of the data set.
If the data set contains data, DFSMShsm writes the output data after the existing data.

Note: You can use the PATCH command to change the unit name, the primary allocation, and the secondary allocation. See the "Tuning DFSMShsm" topic in z/OS DFSMShsm Implementation and Customization Guide.

Abbreviations: You can use the abbreviation ODS for OUTDATASET.

Defaults: None.