!#/bin/bash
echo -e "shutdown immdiate;\nexit">/tmp/shutdown.sql
su - oracle -c "sqlplus / as sysdba@/tmp/shutdown.sql"

if [ $? -eq 0 ]
then
    echo "shutdown oracle successful!"
    rm -rf /tmp/shutdown.sql
fi

read -p "Are you sure to unistall the Oracle and reboot the system?(Please enter ‘y‘ or ‘n‘):
 
" flag

if [ "$flag"=="y" -o "$flag"=="Y" ]
then
    rm -rf /opt/oracle
    rm -rf /etc/ora*
    rm -rf /user/local/bin/*oraenv
    rm -rf /tmp/*Oracle*
    rm -rf /tmp/Oracle*
    userdel oracle
    rm -rf /home/oracle
    groupdel dba
    droupdel oinstall
    sync
    sync
    sync
    shutdown -r -t time now
else
    echo "Cancel unistall the Oracle ..."
    exit 0
fi    
    
 

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