use gdb to close files of (buggy) application

[adirtymindisajoyforever]

Hi,

I have a java application that doesn't close its sockets, so
tried to solve the problem with gdb.

# gdb -p 1111
(gdb) call close(14)
No symbol table is loaded. Use the "file" command.

So I tried
(gdb) symbol-file /lib/libc.so.1
Reading symbols from /lib/libc.so.1...(no debugging symbols
found)...done.
warning: sol_thread_new_objfile: td_ta_new: Debugger service failed
(gdb) call close(14)
Warning:
Cannot insert breakpoint 0.
Error accessing memory address 0xffffffff: I/O error.

Any idea of how to get the desired result?

Yes, I can restart the app, and even change the source code, but just
a very bit curieus.

Tnx in advance for all answers.