Automate database Startup/Shutdown

Update 'oratab' (under /etc or /var/opt/oracle) as:
SID:ORACLE_HOME:Y
#dbstart will automatically start instances with Y

This script does not work for ASM requiring CRS to be running
[/etc/init.d/dbora]
#!/bin/bash
#
# chkconfig: 35 99 10   
# description: Starts and stops Oracle processes
# 35 means that the service will be started in init levels 3 and 5 and will be  stopped in other levels. 
# 99 means that the service will be started at the near end of the init level processing 
# 10 means that the service will be stopped at the near beginning of the init level processing
#
# Set ORA_HOME to be equivalent to the $ORACLE_HOME
# from which you wish to execute dbstart and dbshut;
#
# Set ORA_OWNER to the user id of the owner of the
# Oracle database in ORA_HOME.
#
ORA_HOME=/app/oracle/product/11.1.0/db_1
ORA_OWNER=ora11
LSNR_NAME=lsnr_al12
case "$1" in
  'start')
    # Start the TNS Listener
    su - $ORA_OWNER -c "$ORA_HOME/bin/lsnrctl start $LSNR_NAME"
    # Start the Oracle databases:
    # The following command assumes that the oracle login
    # will not prompt the user for any values
    su - $ORA_OWNER -c $ORA_HOME/bin/dbstart
    # Start the Intelligent Agent
    ##if [ -f $ORA_HOME/bin/emctl ]; then
    ##  su - $ORA_OWNER -c "$ORA_HOME/bin/emctl start agent"
    ##elif [ -f $ORA_HOME/bin/agentctl ]; then
    ##  su - $ORA_OWNER -c "$ORA_HOME/bin/agentctl start"
    ##else
    ##  su - $ORA_OWNER -c "$ORA_HOME/bin/lsnrctl dbsnmp_start"
    ##fi
    # Start Management Server
    ##if [ -f $ORA_HOME/bin/emctl ]; then
    ##  su - $ORA_OWNER -c "$ORA_HOME/bin/emctl start dbconsole"
    ##elif [ -f $ORA_HOME/bin/oemctl ]; then
    ##  su - $ORA_OWNER -c "$ORA_HOME/bin/oemctl start oms"
    ##fi
    # Start HTTP Server
    ##if [ -f $ORA_HOME/Apache/Apache/bin/apachectl]; then
    ##  su - $ORA_OWNER -c "$ORA_HOME/Apache/Apache/bin/apachectl start"
    ##fi
    touch /var/lock/subsys/dbora
    ;;
  'stop')
    # Stop HTTP Server
    ##if [ -f $ORA_HOME/Apache/Apache/bin/apachectl ]; then
    ##  su - $ORA_OWNER -c "$ORA_HOME/Apache/Apache/bin/apachectl stop"
    ##fi
    # Stop the TNS Listener
    su - $ORA_OWNER -c "$ORA_HOME/bin/lsnrctl stop $LSNR_NAME"
    # Stop the Oracle databases:
    # The following command assumes that the oracle login
    # will not prompt the user for any values
    su - $ORA_OWNER -c $ORA_HOME/bin/dbshut
    rm -f /var/lock/subsys/dbora
    ;;
esac
# End of script dbora

chmod 755 /etc/init.d/dbora

#Linux
/sbin/chkconfig --add dbora