An instruction data set is optionally created for an aggregate backup. It may contain instructions or other information to help you perform that application’s recovery. It is contained in the instruction data set, which is the second file on the control file tape.
To help you perform aggregate recovery, you should first retrieve the instruction data set. The instruction data set is contained in the instruction/activity log file, outputdatasetprefix.I.CnnVnnnn. The outputdatasetprefix was specified in the aggregate group during aggregate backup. You can retrieve the instruction data set by issuing the ARECOVER command with the INSTRUCTION parameter.