Monitor open file handles used by a process

We have a process that is running out of file handles. Is there some command line way to determine this that we can include into a cron script?

Please let me know
JAK

What do you mean?

What operating system and version are you using?

uname -a
Linux develx01 2.4.21-53.ELsmp #1 SMP Wed Nov 14 03:54:12 EST 2007 i686 i686 i386 GNU/Linux