Explanation: OBJECTNAMES(name1,name2,...) is an optional parameter specifying the compaction-control qualifier of all data sets that should be compacted with the compaction table for object data sets. For generation data group data sets, this compaction-control qualifier is the next-to-the-last qualifier of the data set name. For all other data sets, this compaction-control qualifier is the last qualifier of the data set name.
For name1,name2,..., specify the compaction-control qualifiers of the data set names of those data sets you want to compact with the compaction table for data sets that contain object code. For example, you could specify LINKLIB as a compaction-control qualifier.
SMS relationship: Parameter differs in meaning when applied to SMS-managed or non-SMS-managed DASD volumes or data sets.
SETSYS default: None.
DFSMShsm default: If you do not specify this parameter on any SETSYS command, the DFSMShsm default is that the general compaction table is used to compact the object data sets.