Unable to start MT services using the script adstrtal.sh

Issue

$ adstrtal.sh
You are running adstrtal.sh version 120.13.12000000.4
Enter the APPS username: apps
Enter the APPS password:
adstrtal.sh: Database connection could not be established. Either the database is down or the APPS
credentials supplied are wrong.
USAGE:  adstrtal.sh <appsusername/appspassword>
adstrtal.sh: exiting with status 1

Solution:

Workaround
-->apps password is correct and DB is up and running,but wrong entries in adstrtall.sh
-->Added a hash to the following :

#sqlplus -s /nolog > /dev/null 2>&1 <<EOF
#whenever sqlerror exit failure
#connect apps/apps
#exit success
#EOF

-->Now MT services are started properly