Name Server Statistics

[atchumel]

Hi!
Does anybody know how is possible collect Name Server Statistics on the AIX?

I've running DNS server - 'named' daemon.
The named.conf file :
..
options {
directory "."; // use current directory
named-xfer "/usr/libexec/named-xfer"; // _PATH_XFER
dump-file "named_dump.db"; // _PATH_DUMPFILE
pid-file "/var/run/named.pid"; // _PATH_PIDFILE
statistics-file "/etc/named.stats"; // _PATH_STATS
check-names master fail;
check-names slave warn;
check-names response ignore;
..
clean-interval 60; // clean the cache of expired RRs
// every 'clean-interval' minutes
interface-interval 60; // scan for new or deleted interfaces
// every 'interface-interval' minutes
statistics-interval 1; // log statistics every
// 'statistics-interval' minutes
};
..
But the /etc/named.stats file is empty

Help me 'run' it, please.
Or get know about some utility what enables collect the statistics of Name Server, if such exists.

Thanks in advance,
Alex.