This operand causes the side files data to be read again and rebuilt without stopping and restarting the server or remounting of mount points. Enter the operand as follows:

>>-+-MODIFY-+--mvsnfs,mapfile-+---------+----------------------><
   '-F------'                 '-=dsname-'   

where

mapfile

refreshes all side files specified either from the sidefile site attribute (from NFSATTR DD statement) or previously specified by any mount command.

mapfile=dsname

refreshes only side file dsname.