Collection data set

The collection data set contains the records requested by the application program. One collection data set contains all of the records requested when the data collection interface is invoked. You must include a DD statement with a DDNAME of ARCDATA to refer to this data set. The interface allows the application program to append the DFSMShsm collection records onto the end of an existing collection data set.

The collection data set is a physical sequential data set with a variable or variable-blocked record format. Any record length can be specified provided it is large enough to contain the largest collection record generated. The following is an example of a valid configuration:

 DSORG = PS
 RECFM = VB
 LRECL = 264
 BLKSIZE = 5280

Quick size calculation for the collection data set

If all (and only) DFSMShsm-specific records are requested, use the work sheet shown in Figure 1 to calculate the size (in tracks) for the collection data set.

Figure 1. Collection Data Set Size Work Sheet. This worksheet is also found in DFSMShsm work sheets.