I am trying to configure /etc/rc.d/init.d/named..
I have written the script and made a file /var/run/named/named.pid.
After that I have created a user named and set permission like "chown named.named /var/run/named/".
Then I run chkconfig --add named
Now when I restart the system I don't find /var/run/named/named.pid file.
Again when I try to start named by /etc/rc.d/init.d/named start it gives me failed message. My rndc is conigured properly.

You shouldn't create the pid file. It will be created once named is up and running.
Check the logs under /var/log to find out what the problem is.

Usually, any exit code of non zero indicates an error.

How are you "exit"ing your script? are you setting up something like "RETVAL" and "exit $RETVAL".

My script is like this
-------------------------------
#!/bin/sh
#
# named This shell script takes care of starting and stopping
# named (BIND DNS server).
#
# chkconfig: 345 55 45
# description: named (BIND) is a Domain Name Server (DNS) \
# that is used to resolve host names to IP addresses.
# probe: true
#
# Source function library.
. /etc/rc.d/init.d/functions
#
# Source networking configuration.
. /etc/sysconfig/network
#
# Check that networking is up.
[ ${NETWORKING} = "no" ] && exit 0
#
[ -f /usr/local/sbin/named ] || exit 0
[ -f /etc/named.conf ] || exit 0
#
# See how we were called.
case "$1" in
start)
# Start daemons.
echo -n "Starting named: "
daemon /usr/local/sbin/named -u named -c /etc/named.conf
echo
touch /var/lock/subsys/named
;;

stop)
# Stop daemons.
echo -n "Shutting down named: "
kill `pidof named`
echo
rm -f /var/lock/subsys/named
;;

status)
status named
exit $?
;;

restart)
$0 stop
$0 start
exit $?
;;

reload)
/usr/local/sbin/rndc reload
exit $?
;;

probe)
# named knows how to reload intelligently; we don't want linuxconf
# to offer to restart every time
/usr/local/sbin/rndc reload >/dev/null 2>&1 || echo start
exit 0
;;
#

*)
echo "Usage: named {start|stop|status|restart|reload}"
exit 1
esac
#
exit 0

If you run "/usr/local/sbin/named -u named -c /etc/named.conf" manually, does it start?

yes, and what is the return code ($?) from daemon.

also, your start and stop functions don't return any codes and your probe function always succeeds, apparently, it returns 0, always.

No it does not start

whats in the logs (/var/log/???)