DBORA script for oracle startup in RHEL

[root@myserver ~]# cat /etc/init.d/dbora 
#!/bin/bash
#
# chkconfig: 345  60 50
# description: Oracle auto start-stop script.

# Modify the variables $ORA_HOME, $ORA_OWNER and $LOG as appropriate for each server.
#          -  Nabeel Moidu

# Source function library.
. /etc/rc.d/init.d/functions
# Source networking configuration.
[ -r /etc/sysconfig/network ] && . /etc/sysconfig/network

# Modify the variables $ORA_HOME, $ORA_OWNER and $LOG as appropriate for each server.
#          -  Nabeel Moidu
ORA_HOME=/u01/oracle/product/10.2.0.1
ORA_OWNER=ora10g
LOG=$ORA_HOME/log/server/dbora/dbora.log


if [ ! -f $ORA_HOME/bin/dbstart -o ! -d $ORA_HOME ] 
then
   echo "Oracle startup: cannot start"
   exit
fi

case "$1" in
    start)
       echo "$0: starting up" >> $LOG
       # Start the Oracle databases:
       su - $ORA_OWNER -c "$ORA_HOME/bin/dbstart &" >> $LOG
       # Start Oracle listener
       date >> $LOG
       su - $ORA_OWNER -c "$ORA_HOME/bin/lsnrctl start" >> $LOG 2>&1
       touch /var/lock/subsys/dbora
       echo "Refer to $LOG for details"
        ;;
     stop)
        echo "$0: stopping down" >> $LOG
        date >> $LOG
        # Stop Oracle Net
        su - $ORA_OWNER -c "$ORA_HOME/bin/lsnrctl stop" >> $LOG 2>&1
        # Stop the Oracle databases:
        su - $ORA_OWNER -c "$ORA_HOME/bin/dbshut &" >> $LOG
        rm -f /var/lock/subsys/dbora
        ;;
    restart)
        $0 stop
        sleep 120
        $0 start
        ;;
    status)
        if [ -f /var/lock/subsys/dbora ]; then
            echo $0 started.
            su - $ORA_OWNER -c "$ORA_HOME/bin/lsnrctl status"  
        else
            echo $0 stopped.
            su - $ORA_OWNER -c "$ORA_HOME/bin/lsnrctl status"  
        fi
        ;;
    *)
        echo "usage: dbora {start|stop|restart|status}"
        exit 1
esac
exit 0