SSH tunneling on Ubuntu

ssh -L 15401:IP/HOST:1521 -L 15301:IP/HOST:1521 -L 15300:IP/HOST:1521 userid@serverhost

For building a tunneling easier, better make a simple shell script and add it into path. and run with simple command.
I simply made "db" command to establish tunneling simply way
--- Check connection

netstat -an | grep 15