The MAXSORT technique is initiated by means of the MAXSORT PARM, and utilizes additional MAXSORT DD statements (SORTBKPT, SORTOU00, SORTOUnn) and PARMs. With MAXSORT, SORTWK files must be allocated to disk devices. This technique is strongly recommended for very large sorting applications in a limited disk work space environment. See MAXSORT.
The PARASORT technique is initiated by means of the PARASORT PARM and utilizes additional PARASORT DD statements (SORTPAR1, SORTPAR2, SORTPAR3, SORTPAR4). PARASORT requires disk SORTWK devices. This technique can improve the elapsed time of sorting applications that have multi-volume tape SORTIN data sets. See PARASORT.
The DB2 Query Support technique is initiated by means of the DB2 Query Support PARM and utilizes the DB2 Query Support DD statement SORTDBIN. This technique allows DB2 data to be passed directly into a SORT or COPY operation, without the use of setup steps or the need for user-written E15 exits. See MFX DB2 Query Support.
The MULTIIN facility is initiated by means of the MULTIIN PARM and utilizes SORTMInn DD statements. This facility allows the combination of VSAM and non-VSAM files as input to a SORT or COPY operation. See Multiple Input Files.