PTF UK51706 for z/OS DFSORT V1R5 and PTF UK51707 for z/OS DFSORT V1R10 (Nov, 2009) provide important enhancements to DFSORT and DFSORT's ICETOOL for various types of two file join applications (JOINKEYS, JOIN, REFORMAT, JKFROM); date field conversions (Y2x, Y4x, TOJUL, TOGREG, WEEKDAY, DT, DTNS); merge operations (MERGE operator); alternate ddnames for MERGE (MERGEIN); easier migration from other sort products, and more.
For complete details on these new features, see my "User Guide for DFSORT PTFs UK51706 and UK51707" paper (sortugpg.pdf) at:
http://www.ibm.com/support/docview.wss? ... g3T7000174