Shell Programming and Scripting

Hello All,
I have a shell script, which is login user to database, prompting to enter username, password and database instance. I would like to hide password. Can someone tell me how to do that (if it is possible), so script's output could look something like this:

%dblogin.ksh
Please, Enter user name:
user
Your password:

Database Instance:
DB
UserName: user
Password:
DB: DB


function DBLogin {
while true
do
print "Please, Enter user name: "
read input
UserName=$input
print "Your password: "
read input
Password=$input
print "Database Instance: "
read input
DB=$input
print "UserName: $UserName"
print "Password: $Password"
print "DB: $DB"
break
done
sqlplus $UserName/$Password@$DB
return;
}
Any other suggestions are more than welcome!

Many thanks in advance!

Using something like this....

Code:

print "Your password: "
stty -echo
read input
stty echo
Password=$input

Cheers
ZB

FWIW -
passwords used in "sqlplus username/password" are
always available to any other user:

Code:

ps -ef | grep "sqlplus"