The IBM-supplied default for the existing EXPOLD installation option has been changed to EXPOLD=50%. If you want DFSORT to use EXPOLD, as in previous releases, you can set EXPOLD=MAX.

The IBM-supplied default for the existing EXPRES installation option has been changed to EXPRES=10%. If you want DFSORT to use EXPRES, as in previous releases, you can set EXPRES=0.

The IBM-supplied default for the new TUNE installation option is TUNE=STOR which specifies allocation of available central storage as needed in increments sized to balance resource usage for concurrent sorts. If you want DFSORT to allocate available central storage using fixed sized increments, as in previous releases, you can set TUNE=OLD.