`<<' is not matched.

# Createion Date: 21-Jul-2006
# Modification Date:
# Version: 1.0
####################################################################
##############################################################
# Check the parameter
##############################################################
if [ "${#}" -lt 5 -o "${#}" -gt 5 ]
then
echo "Usage for this script is : <Start Month> <End Month> <DB_Name> <DB_User>
<DB_Password>"
exit 1
fi
if [ "${#}" -eq 5 ]
then
start_month=$1
end_month=$2
db_nm=$3
db_usr=$4
db_pwd=$5
fi
while [ "$start_month" -ne "$end_month" ]
do
echo $start_month
sqlplus -s $db_usr/$db_pwd@db_nm <<END
print -p "select * from dual;"
exit
END
$start_month=`eval start_month + 1`
done> 

sqlplus -s $db_usr/$db_pwd@db_nm <<END
print -p "select * from dual;"
exit
END