The amount of sortwork space required is the same as if the application were run as a conventional sort. What should be modified, if sortworks are provided via JCL rather than DYNALLOC, is the number of SORTWKxx DD statements. Try to provide a total number of SORTWKxx DDs that is two to three times the number of SORTPARns specified. This would typically require an adjustment in primary and secondary space amounts so that the total space allocated is similar to that of the original application. This subdivision of SORTWORK space will provide an opportunity for additional channel path availability. This parallelism in SORTWORK channel paths is also a key to improving sort elapsed time performance.