http://www.perlmonks.org?node_id=883437


in reply to Re^2: file handle limitation of 255
in thread file handle limitation of 255

A workaround on Solaris 10 (update 4?) and later is to run the application with this environment variable setting:
LD_PRELOAD_32=/usr/lib/extendedFILE.so.1
For details, see http://blogs.sun.com/mandalika/entry/solaris_workaround_to_stdio_s