If you make a backup to tape with the Oracle Recovery Manager and the SAP backup library and want to use the file multiplexing option, then you can use this parameter to control the grouping of the savesets.
By setting the number of files to be saved in a single saveset, you can ensure that the speed of your tape device is optimal.
Syntax: saveset_members = 1|2|3|4|tsp|all
Default: 1 (no file multiplexing)
1,2,3,4: Number of files in a save set
tsp: each save set contains all files of a tablespace
all: only one save set with all database files is created