Init Script to start Oracle Database 11g R2 automatically while reboot

[root@db01 ~]# vi /etc/oratab # This file is used by ORACLE utilities. It is created by root.sh # and updated by the Database Configuration Assistant when creating # a database. # A colon, ':', is used as the field terminator. A new line terminates # the entry. Lines beginning with a pound sign, '#', are comments. # # Entries are of the form: # $ORACLE_SID:$ORACLE_HOME:<N|Y>: # # The first and second fields are the system identifier and home # directory of the database respectively. The third filed indicates # to the dbstart utility that the database should , "Y", or should not, # "N", be brought up at system boot time. # # Multiple entries with the same $ORACLE_SID are not allowed. # # orcl:/opt/app/oracle/product/11.2.0/dbhome_1:Y  #default N   [root@db01 ~]# vi  /home/oracle/.bash_profile # add your SID at the last line export ORACLE_SID=orcl

Create init script for Oracle

[root@db01 ~]# vi /etc/rc.d/init.d/oracle   #!/bin/bash # oracle: Start/Stop Oracle Database 11g R2 # # chkconfig: 345 90 10 # description: The Oracle Database is an Object-Relational Database Management System. # # processname: oracle . /etc/rc.d/init.d/functions LOCKFILE=/var/lock/subsys/oracle ORACLE_HOME=/opt/app/oracle/product/11.2.0/dbhome_1 ORACLE_USER=oracle case "$1" in 'start') if [ -f $LOCKFILE ]; then echo $0 already running. exit 1 fi echo -n $"Starting Oracle Database:" su - $ORACLE_USER -c "$ORACLE_HOME/bin/lsnrctl start" su - $ORACLE_USER -c "$ORACLE_HOME/bin/dbstart $ORACLE_HOME" su - $ORACLE_USER -c "$ORACLE_HOME/bin/emctl start dbconsole" touch $LOCKFILE ;; 'stop') if [ ! -f $LOCKFILE ]; then echo $0 already stopping. exit 1 fi echo -n $"Stopping Oracle Database:" su - $ORACLE_USER -c "$ORACLE_HOME/bin/lsnrctl stop" su - $ORACLE_USER -c "$ORACLE_HOME/bin/dbshut" su - $ORACLE_USER -c "$ORACLE_HOME/bin/emctl stop dbconsole" rm -f $LOCKFILE ;; 'restart') $0 stop $0 start ;; 'status') if [ -f $LOCKFILE ]; then echo $0 started. else echo $0 stopped. fi ;; *) echo "Usage: $0 [start|stop|status]" exit 1 esac exit 0 [root@db01 ~]# chmod 755 /etc/rc.d/init.d/oracle [root@db01 ~]# /etc/rc.d/init.d/oracle start/status Starting Oracle Database: LSNRCTL for Linux: Version 11.2.0.1.0 - Production on 12-JUL-2011 23:41:57 Copyright (c) 1991, 2009, Oracle. All rights reserved. Starting /opt/app/oracle/product/11.2.0/dbhome_1/bin/tnslsnr: please wait... TNSLSNR for Linux: Version 11.2.0.1.0 - Production System parameter file is /opt/app/oracle/product/11.2.0/dbhome_1/network/admin/listener.ora Log messages written to /opt/app/oracle/diag/tnslsnr/db01/listener/alert/log.xml Listening on: (DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=orcl.localhost)(PORT=1521))) Connecting to (DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=orcl.localhost)(PORT=1521))) STATUS of the LISTENER ------------------------ Alias LISTENER Version TNSLSNR for Linux: Version 11.2.0.1.0 - Production Start Date 12-JUL-2011 23:41:57 Uptime 0 days 0 hr. 0 min. 0 sec Trace Level off Security ON: Local OS Authentication SNMP OFF Listener Parameter File /opt/app/oracle/product/11.2.0/dbhome_1/network/admin/listener.ora Listener Log File /opt/app/oracle/diag/tnslsnr/db01/listener/alert/log.xml Listening Endpoints Summary... (DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=orcl)(PORT=1521))) The listener supports no services The command completed successfully Processing Database instance "orcl": log file /opt/app/oracle/product/11.2.0/dbhome_1/startup.log Oracle Enterprise Manager 11g Database Control Release 11.2.0.1.0 Copyright (c) 1996, 2009 Oracle Corporation. All rights reserved. https://orcl:1158/em/console/aboutApplication Starting Oracle Enterprise Manager 11g Database Control ........ started. ------------------------------------------------------------------ Logs are generated in directory /opt/app/oracle/product/11.2.0/dbhome_1/db01.server.world_db01/sysman/log [root@db01 ~]#chkconfig --add oracle [root@db01 ~]#chkconfig oracle on Enjoy!!!!