[root@rhel opt]# l core.24451
-rw-r--r-- 1 root root 3666706432 Jun 28 01:26 core.24451

[root@rhel opt]# jmap /opt/sun/appserber/lib/appserv core.24451
Attaching to core core.24451 from executable /opt/sun/appserber/lib/appserv, please wait...
Error attaching to core file: Can't attach to the core file


[root@rhel opt]# strace jmap /opt/sun/appserber/lib/appserv core.24451
:
open("core.24451", O_RDONLY) = -1 EFBIG (File too large)
:
--> O_LARGEFILE missing!