Database Monitor Script

MAILLIST="test@gmail.com"

if [ "$1" ]
then DBNAME=$1
else echo "\nOracle SID has not been entered."
exit 16
fi

sqlplus -silent <<> /tmp/$$.1 &
a/a@${DBNAME}
exit;
EOF

Pid=$!
sleep 2

if [[ `ps -ef  grep -w "$Pid"` != "" ]] ; then
        kill -9 $Pid
fi

egrep 'ORA-121ORA-01034' /tmp/$$.1 > /dev/null
if [[ $? = 0 ]]
then
   echo " ${DBNAME} is not accessible - db is down"
   mailx -s " ${DBNAME} is not accessible - db is down" ${MAILLIST} < /tmp/$$.1 else    grep -e 'ORA-01017' -e 'ORA-01033' /tmp/$$.1 > /dev/null
   if [[ $? = 0 ]]
   then
      echo " ${DBNAME} is accessible - db is up and running"
      exit 16
   else
   echo " ${DBNAME} is not accessible - db is down"
   mailx -s " ${DBNAME} is not accessible - db is down" ${MAILLIST} < /tmp/$$.1       fi  fi   rm /tmp/$$.1   exit