cat /etc/oratab
SID:/p01/app/oracle/product/11.2.0/db_1:Y

cat /etc/rc.d/rc.local
su - oracle -c 'dbstart'
su - oracle -c 'lsnrctl start'

DG备库开机启动脚本：
more /home/oracle/dbscripts/startdg.sh
!/bin/sh
db auto be mount status when os restart

su - oracle -c 'lsnrctl start'
su - oracle -c 'sqlplus / as sysdba' <

startup mount;
alter database open read only;
alter database recover managed standby database using current logfile disconnect from session;
exit;
EOF

cat /etc/rc.local
!/bin/sh

touch /var/lock/subsys/local
sh /home/oracle/dbscripts/startdg.sh > /tmp/startdg.log 2>&1