整理自：http://www.cnblogs.com/mchina/archive/2012/11/27/2782993.html
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1. 修改Oracle系统配置文件：/etc/oratab，只有这样，Oracle 自带的dbstart和dbshut才能够发挥作用。

# vi /etc/oratab
orcl:/opt/oracle/102:Y

# Entries are of the form:
#   $ORACLE_SID:$ORACLE_HOME:<N|Y>:

2. 在 /etc/init.d/ 下创建文件orad，orad即为服务名称。
#vim /etc/init.d/orad
##THIS BEGIN
#!/bin/sh
# chkconfig: 35 80 10
# description: Oracle auto start-stop script.
#
# Set ORACLE_HOME to be equivalent to the $ORACLE_HOME
# from which you wish to execute dbstart and dbshut;
#
# Set ORACLE_OWNER to the user id of the owner of the
# Oracle database in ORACLE_HOME.
ORACLE_HOME=/home/oracle/product/11.2.0/db_1
ORACLE_OWNER=oracle
if [ ! -f $ORACLE_HOME/bin/dbstart ]
then
    echo "Oracle startup: cannot start"
    exit
fi
case "$1" in
'start')
# Start the Oracle databases:
echo "Starting Oracle Databases ... "
echo "-------------------------------------------------" >> /var/log/oracle
date +" %T %a %D : Starting Oracle Databases as part of system up." >> /var/log/oracle
echo "-------------------------------------------------" >> /var/log/oracle
su - $ORACLE_OWNER -c "$ORACLE_HOME/bin/dbstart" >>/var/log/oracle
echo "Done"

# Start the Listener:
echo "Starting Oracle Listeners ... "
echo "-------------------------------------------------" >> /var/log/oracle
date +" %T %a %D : Starting Oracle Listeners as part of system up." >> /var/log/oracle
echo "-------------------------------------------------" >> /var/log/oracle
su - $ORACLE_OWNER -c "$ORACLE_HOME/bin/lsnrctl start" >>/var/log/oracle
echo "Done."
echo "-------------------------------------------------" >> /var/log/oracle
date +" %T %a %D : Finished." >> /var/log/oracle
echo "-------------------------------------------------" >> /var/log/oracle
touch /var/lock/subsys/oracle
;;

'stop')
# Stop the Oracle Listener:
echo "Stoping Oracle Listeners ... "
echo "-------------------------------------------------" >> /var/log/oracle
date +" %T %a %D : Stoping Oracle Listener as part of system down." >> /var/log/oracle
echo "-------------------------------------------------" >> /var/log/oracle
su - $ORACLE_OWNER -c "$ORACLE_HOME/bin/lsnrctl stop" >>/var/log/oracle
echo "Done."
rm -f /var/lock/subsys/oracle

# Stop the Oracle Database:
echo "Stoping Oracle Databases ... "
echo "-------------------------------------------------" >> /var/log/oracle
date +" %T %a %D : Stoping Oracle Databases as part of system down." >> /var/log/oracle
echo "-------------------------------------------------" >> /var/log/oracle
su - $ORACLE_OWNER -c "$ORACLE_HOME/bin/dbshut" >>/var/log/oracle
echo "Done."
echo ""
echo "-------------------------------------------------" >> /var/log/oracle
date +" %T %a %D : Finished." >> /var/log/oracle
echo "-------------------------------------------------" >> /var/log/oracle
;;

'restart')
$0 stop
$0 start
;;
esac
#####THE END

3. 改变文件权限
# chmod 755 /etc/init.d/orad

4. 添加服务
# chkconfig --level 35 orad on

5. 需要在关机或重启机器之前停止数据库，做一下操作
# ln -s /etc/init.d/orad /etc/rc0.d/K01orad   //关机
# ln -s /etc/init.d/orad /etc/rc6.d/K01orad   //重启

6. 使用方法
# service orad start        //启动oracle
# service oradstop        //关闭oracle
# service orad restart     //重启oracle

7. 测试

查询一条语句，验证数据库是否可用；
select * from scott.emp;

使用lsnrctl status 查看监听状态。