一./etc/oratab说明
直接使用cat 查看这个文件：
gg1:/home/oracle> cat /etc/oratab
#
# This file is used by ORACLEutilities. It is created by root.sh
# and updated by the Database ConfigurationAssistant when creating
# a database.
# A colon, ':', is used as the fieldterminator. A new line terminates
# the entry. Lines beginning with a pound sign, '#', arecomments.
#
# Entries are of the form:
# $ORACLE_SID:$ORACLE_HOME:<N|Y|W>:
#
# The first and second fields are thesystem identifier and home
# directory of the databaserespectively. The third filed indicates
# to the dbstart utility that the databaseshould , "Y", or should not,
# "N", be brought up at systemboot time.
#
# Multiple entries with the same$ORACLE_SID are not allowed.
#
#
gg1:/u01/app/oracle/product/11.2.0.3/db_1:N
这里是我测试环境上的文件，在这个注释里面，对这个文件讲的比较清楚。/etc/oratab 由root.sh 脚本创建，在用DBCA 创建实例时也会更新这个文件。
当$ORACLE_SID:$ORACLE_HOME:<N|Y> 设置为Y时，允许实例自启动，当设置为N时，则不允许自启动。 这个文件里的配置仅仅起一个开关的作用，其并不会具体的执行启动和关闭，具体的操作由$ORACLE_HOME/bin/dbstart和dbshut 脚本来实现。 这2个脚本在执行时会检查/etc/oratab 文件里的配置，为Y时才能继续执行。
所以配置数据库自启动和关闭的步骤如下：
（1） 配置/etc/oratab
（2） 修改$ORACLE_HOME/bin/dbstart和dbshut，并将其添加到/etc/rc(.local) 文件中。
这里是使用oracle 自带的dbstart 和dbshut脚本，如果使用自己写的脚本来启动或关闭DB 就不需要关心这个文件的设置了。
二.$ORACLE_HOME/bin/dbstart，dbshut 说明
2.1 dbstart 脚本
gg1:/u01/app/oracle/product/11.2.0.3/db_1/bin>cat dbstart#!/bin/sh## $Id: dbstart.sh 22-may-2008.05:05:45arogers Exp $# Copyright (c) 1991, 2008, Oracle. Allrights reserved. # ##################################### usage: dbstart $ORACLE_HOME## This script is used tostart ORACLE from /etc/rc(.local).# It should ONLY beexecuted as part of the system boot procedure.## This script will start all databaseslisted in the oratab file# whose third field is a"Y". If the third field is setto "Y" and# there is no ORACLE_SID for an entry (thefirst field is a *),# then this script will ignore that entry.--这里就是我们之前说的，这个仅启动/etc/oratab 文件中标记为Y的实例。## This script requires that ASMORACLE_SID's start with a +, and# that non-ASM instance ORACLE_SID's do notstart with a +.## If ASM instances are to be started withthis script, it cannot be used inside an rc*.d directory, and should be invokedfrom rc.local only. Otherwise, the CSS service may not be available yet, andthis script will block init from completing the boot cycle.--如果是ASM 实例，那么只能从rc.local中调用，否则CSS 服务可能不可用。## If you want dbstart to auto-start asingle-instance database that uses# an ASM server that is auto-started by CRS(this is the default behavior# for an ASM cluster), you must change thedatabase's ORATAB entry to use# a third field of "W" and theASM's ORATAB entry to use a third field of "N".# These values specify that dbstartauto-starts the database only after# the ASM instance is up and running.--注意这里的W，其表示等待所有的ASM 实例启动完毕后在启动数据库。## Note:# Use ORACLE_TRACE=T for tracing thisscript.## The progress log for each instancebringup plus Error and Warning message[s]# are logged in file $ORACLE_HOME/startup.log.The error messages related to# instance bringup are also logged tosyslog (system log module).# The Listener log is located at$ORACLE_HOME_LISTNER/listener.log--启动日志存放在$ORACLE_HOME/startup.log里。## On all UNIX platforms except SOLARIS# ORATAB=/etc/oratab## To configure, update ORATAB withInstances that need to be started up# Entries are of the form:# $ORACLE_SID:$ORACLE_HOME:<N|Y|W>:# An example entry:# main:/usr/lib/oracle/emagent_10g:Y## Overall algorithm:--启动顺序# 1) Bring up all ASM instances with 'Y'entry in status field in oratab entry--启动状态为Y的所有ASM 实例# 2) Bring up all Database instances with'Y' entry in status field in# oratab entry--启动所有状态为Y的数据库实例# 3) If there are Database instances with'W' entry in status field# then# iterate over all ASM instances (irrespective of 'Y' or 'N') AND# wait for all of them to be started# fi--如果数据库的状态为W，则等待ASM 实例启动完毕，再启动# 4) Bring up all Database instances with'W' entry in status field in# oratab entry--启动所有状态为W的数据库实例###################################### LOGMSG="logger -puser.alert -s " trap 'exit' 1 2 3 # for script tracingcase $ORACLE_TRACE in T)set -x ;;esac # Set path if path not set (if called from/etc/rc)SAVE_PATH=/bin:/usr/bin:/etc:${PATH} ;export PATHSAVE_LLP=$LD_LIBRARY_PATH # First argument is used to bring up OracleNet ListenerORACLE_HOME_LISTNER=$1if [ ! $ORACLE_HOME_LISTNER ] ; then echo "ORACLE_HOME_LISTNER is not SET, unable to auto-start OracleNet Listener" echo "Usage: $0 ORACLE_HOME"else LOG=$ORACLE_HOME_LISTNER/listener.log #Set the ORACLE_HOME for the Oracle Net Listener, it gets reset to # adifferent ORACLE_HOME for each entry in the oratab. export ORACLE_HOME=$ORACLE_HOME_LISTNER #Start Oracle Net Listener if[ -x $ORACLE_HOME_LISTNER/bin/tnslsnr ] ; then echo "$0: Starting Oracle Net Listener" >> $LOG2>&1 $ORACLE_HOME_LISTNER/bin/lsnrctl start >> $LOG 2>&1 & VER10LIST=`$ORACLE_HOME_LISTNER/bin/lsnrctl version | grep "LSNRCTLfor " | cut -d' ' -f5 | cut -d'.' -f1` export VER10LIST else echo "Failed to auto-start Oracle Net Listener using$ORACLE_HOME_LISTNER/bin/tnslsnr" fifi # Set this in accordance with the platformORATAB=/etc/oratabif [ ! $ORATAB ] ; then echo "$ORATAB not found" exit 1;fi # Checks Version Mismatch between Listenerand Database Instance.# A version 10 listener is required for anOracle Database 10g database.# Previous versions of the listener are notsupported for use with an Oracle# Database 10g database. However, it ispossible to use a version 10 listener# with previous versions of the Oracledatabase.checkversionmismatch() { if[ $VER10LIST ] ; then VER10INST=`sqlplus -V | grep "Release " | cut -d' ' -f3 | cut-d'.' -f1` if [ $VER10LIST -lt $VER10INST ] ; then $LOGMSG "Listener version $VER10LIST NOT supported with Databaseversion $VER10INST" $LOGMSG "Restart Oracle Net Listener using an alternateORACLE_HOME_LISTNER:" $LOGMSG "lsnrctl start" fi fi} # Starts a DatabaseInstancestartinst() { #Called programs use same database ID export ORACLE_SID #Put $ORACLE_HOME/bin into PATH and export. PATH=$ORACLE_HOME/bin:${SAVE_PATH} ; export PATH #add for bug # 652997 LD_LIBRARY_PATH=${ORACLE_HOME}/lib:${SAVE_LLP} ; export LD_LIBRARY_PATH PFILE=${ORACLE_HOME}/dbs/init${ORACLE_SID}.ora SPFILE=${ORACLE_HOME}/dbs/spfile${ORACLE_SID}.ora SPFILE1=${ORACLE_HOME}/dbs/spfile.ora echo "" echo "$0: Starting up database \"$ORACLE_SID\"" date echo "" checkversionmismatch #See if it is a V6 or V7 database VERSION=undef if[ -f $ORACLE_HOME/bin/sqldba ] ; then SQLDBA=sqldba VERSION=`$ORACLE_HOME/bin/sqldba command=exit | awk ' /SQL\*DBA: (Release|Version)/ {split($3, V, ".") ; print V[1]}'` case $VERSION in "6") ;; *) VERSION="internal" ;; esac else if [ -f $ORACLE_HOME/bin/svrmgrl ] ; then SQLDBA=svrmgrl VERSION="internal" else SQLDBA="sqlplus /nolog" fi fi STATUS=1 if[ -f $ORACLE_HOME/dbs/sgadef${ORACLE_SID}.dbf ] ; then STATUS="-1" fi if[ -f $ORACLE_HOME/dbs/sgadef${ORACLE_SID}.ora ] ; then STATUS="-1" fi pmon=`ps -ef | grep -w "ora_pmon_$ORACLE_SID" | grep -v grep` if[ "$pmon" != "" ] ; then STATUS="-1" $LOGMSG "Warning: ${INST} \"${ORACLE_SID}\" alreadystarted." fi if[ $STATUS -eq -1 ] ; then $LOGMSG "Warning: ${INST} \"${ORACLE_SID}\" possibly leftrunning when system went down (system crash?)." $LOGMSG "Action: Notify Database Administrator." case $VERSION in "6") sqldba"command=shutdown abort" ;; "internal") $SQLDBA$args <<EOFconnect internalshutdown abortEOF ;; *) $SQLDBA $args <<EOFconnect / as sysdbashutdown abortquitEOF ;; esac if [ $? -eq 0 ] ; then STATUS=1 else $LOGMSG "Error: ${INST} \"${ORACLE_SID}\" NOTstarted." fi fi if[ $STATUS -eq 1 ] ; then if [ -e $SPFILE -o -e $SPFILE1 -o -e $PFILE ] ; then case $VERSION in "6") sqldbacommand=startup ;; "internal") $SQLDBA<<EOFconnect internalstartupEOF ;; *) $SQLDBA <<EOFconnect / as sysdbastartupquitEOF ;; esac if [ $? -eq 0 ] ; then echo "" echo "$0: ${INST}\"${ORACLE_SID}\" warm started." else $LOGMSG "" $LOGMSG "Error: ${INST} \"${ORACLE_SID}\" NOTstarted." fi else $LOGMSG "" $LOGMSG "No init file found for ${INST}\"${ORACLE_SID}\"." $LOGMSG "Error: ${INST} \"${ORACLE_SID}\" NOTstarted." fi fi} # Starts an ASM Instancestartasminst() { #Called programs use same database ID export ORACLE_SID ORACLE_HOME=`echo $LINE | awk -F: '{print $2}' -` #Called scripts use same home directory export ORACLE_HOME #For ASM instances, we have a dependency on the CSS service. #Wait here for it to become available before instance startup. #Is the 10g install intact? Are all necessary binaries present? if[ ! -x $ORACLE_HOME/bin/crsctl ]; then $LOGMSG "$ORACLE_HOME/bin/crsctl not found when attempting tostart" $LOGMSG " ASM instance$ORACLE_SID." else COUNT=0 $ORACLE_HOME/bin/crsctl check css RC=$? while [ "$RC" != "0" ]; do COUNT=`expr $COUNT + 1` if [ $COUNT = 15 ] ; then # 15 tries with 20 sec interval => 5 minutes timeout $LOGMSG "Timed out waiting to start ASM instance$ORACLE_SID" $LOGMSG " CSS service is NOTavailable." exit $COUNT fi $LOGMSG "Waiting for Oracle CSS service to be available beforestarting " $LOGMSG " ASM instance $ORACLE_SID. Wait $COUNT." sleep 20 $ORACLE_HOME/bin/crsctl check css RC=$? done fi startinst} # Start of dbstartupscript## Loop for every entry in oratab file andand try to start# that ORACLE.## ASM instances need to be started before'Database instances'# ASM instance is identified with '+'prefix in ORACLE_SID# Following loop brings up ASM instance[s] cat $ORATAB | while read LINEdocase $LINE in \#*) ;; #comment-line in oratab *) ORACLE_SID=`echo $LINE | awk -F: '{print $1}' -` if[ "$ORACLE_SID" = '*' ] ; then #same as NULL SID - ignore this entry ORACLE_SID="" continue fi #Proceed only if last field is 'Y'. if[ "`echo $LINE | awk -F: '{print $NF}' -`" = "Y" ] ; then #If ASM instances if [ `echo $ORACLE_SID | cut -b 1` = '+' ]; then INST="ASM instance" ORACLE_HOME=`echo $LINE | awk -F: '{print $2}' -` # Called scripts use same home directory export ORACLE_HOME # file for logging script's output LOG=$ORACLE_HOME/startup.log touch $LOG chmod a+r $LOG echo "Processing $INST \"$ORACLE_SID\": log file$ORACLE_HOME/startup.log" startasminst >> $LOG 2>&1 fi fi ;;esacdone # exit if there was any trouble bringing upASM instance[s]if [ "$?" != "0" ] ;then exit 2fi ## Following loop brings up 'Database instances'#cat $ORATAB | while read LINEdocase $LINE in \#*) ;; #comment-line in oratab *) ORACLE_SID=`echo $LINE | awk -F: '{print $1}' -` if[ "$ORACLE_SID" = '*' ] ; then #same as NULL SID - ignore this entry ORACLE_SID="" continue fi #Proceed only if last field is 'Y'. if[ "`echo $LINE | awk -F: '{print $NF}' -`" = "Y" ] ; then #If non-ASM instances if [ `echo $ORACLE_SID | cut -b 1` != '+' ]; then INST="Database instance" ORACLE_HOME=`echo $LINE | awk -F: '{print $2}' -` # Called scripts use same home directory export ORACLE_HOME # file for logging script's output LOG=$ORACLE_HOME/startup.log touch $LOG chmod a+r $LOG echo "Processing $INST \"$ORACLE_SID\": log file$ORACLE_HOME/startup.log" startinst >> $LOG 2>&1 fi fi ;;esacdone ## Following loop brings up 'Databaseinstances' that have wait state 'W'#cat $ORATAB | while read LINEdocase $LINE in \#*) ;; #comment-line in oratab *) ORACLE_SID=`echo $LINE | awk -F: '{print $1}' -` if[ "$ORACLE_SID" = '*' ] ; then #same as NULL SID - ignore this entry ORACLE_SID="" continue fi #Proceed only if last field is 'W'. if[ "`echo $LINE | awk -F: '{print $NF}' -`" = "W" ] ; then W_ORACLE_SID=`echo $LINE | awk -F: '{print $1}' -` #DB instances with 'W' (wait state) have a dependency on ASM instances via CRS. #Wait here for 'all' ASM instances to become available. cat $ORATAB | while read LINE do case $LINE in \#*) ;; #comment-line in oratab *) ORACLE_SID=`echo $LINE | awk -F: '{print $1}' -` if [ "$ORACLE_SID" = '*' ] ; then # same as NULL SID - ignore this entry ORACLE_SID="" continue fi if [ `echo $ORACLE_SID | cut -b 1` = '+' ]; then INST="ASM instance" ORACLE_HOME=`echo $LINE | awk -F: '{print $2}' -` if [ -x $ORACLE_HOME/bin/srvctl ] ; then COUNT=0 NODE=`olsnodes -l` RNODE=`srvctl status asm -n $NODE | grep "$ORACLE_SID isrunning"` RC=$? while [ "$RC" != "0" ]; # wait until this comes up! do COUNT=$((COUNT+1)) if [ $COUNT = 5 ] ; then # 5 tries with 60 sec interval=> 5 minutes timeout $LOGMSG "Error: Timed outwaiting on CRS to start ASM instance $ORACLE_SID" exit $COUNT fi $LOGMSG "Waiting for Oracle CRS service to start ASM instance$ORACLE_SID" $LOGMSG "Wait $COUNT." sleep 60 RNODE=`srvctl status asm -n $NODE | grep "$ORACLE_SID isrunning"` RC=$? done else $LOGMSG "Error: \"${W_ORACLE_SID}\" has dependency on ASMinstance \"${ORACLE_SID}\"" $LOGMSG "Error: Need $ORACLE_HOME/bin/srvctl to check thisdependency" fi fi # asm instance ;; esac done # innner while fi ;;esacdone # outer while # by now all the ASM instances have come upand we can proceed to bring up# DB instance with 'W' wait status cat $ORATAB | while read LINEdocase $LINE in \#*) ;; #comment-line in oratab *) ORACLE_SID=`echo $LINE | awk -F: '{print $1}' -` if[ "$ORACLE_SID" = '*' ] ; then #same as NULL SID - ignore this entry ORACLE_SID="" continue fi #Proceed only if last field is 'W'. if[ "`echo $LINE | awk -F: '{print $NF}' -`" = "W" ] ; then INST="Database instance" if [ `echo $ORACLE_SID | cut -b 1` = '+' ]; then $LOGMSG "Error: ${INST} \"${ORACLE_SID}\" NOTstarted" $LOGMSG "Error: incorrect usage: 'W' not allowed for ASMinstances" continue fi ORACLE_HOME=`echo $LINE | awk -F: '{print $2}' -` #Called scripts use same home directory export ORACLE_HOME #file for logging script's output LOG=$ORACLE_HOME/startup.log touch $LOG chmod a+r $LOG echo "Processing $INST \"$ORACLE_SID\": log file$ORACLE_HOME/startup.log" startinst >> $LOG 2>&1 fi ;;esacdonegg1:/u01/app/oracle/product/11.2.0.3/db_1/bin>
2.2 dbshut 脚本
gg1:/u01/app/oracle/product/11.2.0.3/db_1/bin>cat dbshut#!/bin/sh## $Id: dbshut.sh 22-may-2008.05:19:31arogers Exp $# Copyright (c) 1991, 2008, Oracle. Allrights reserved. # ##################################### usage: dbshut $ORACLE_HOME## This script is used to shutdown ORACLEfrom /etc/rc(.local).# It should ONLY be executed as part of thesystem boot procedure.## This script will shutdown all databaseslisted in the oratab file# whose third field is a "Y" or"W". If the third field is setto "Y" and# there is no ORACLE_SID for an entry (thefirst field is a *),# then this script will ignore that entry.## This script requires that ASMORACLE_SID's start with a +, and# that non-ASM instance ORACLE_SID's do notstart with a +.## Note:# Use ORACLE_TRACE=T for tracing this script.# Oracle Net Listener is also shutdownusing this script.## The progress log for each instanceshutdown is logged in file# $ORACLE_HOME/shutdown.log.## On all UNIX platforms except SOLARIS# ORATAB=/etc/oratab## To configure, update ORATAB withInstances that need to be shutdown# Entries are of the form:# $ORACLE_SID:$ORACLE_HOME:<N|Y>:# An example entry:# main:/usr/lib/oracle/emagent_10g:Y###################################### trap 'exit' 1 2 3case $ORACLE_TRACE in T) set-x ;;esac # Set path if path not set (if called from/etc/rc)SAVE_PATH=/bin:/usr/bin:/etc:${PATH} ;export PATHSAVE_LLP=$LD_LIBRARY_PATH # The this to bring down Oracle Net ListenerORACLE_HOME_LISTNER=$1if [ ! $ORACLE_HOME_LISTNER ] ; then echo"ORACLE_HOME_LISTNER is not SET, unable to auto-stop Oracle NetListener" echo "Usage: $0 ORACLE_HOME"else LOG=$ORACLE_HOME_LISTNER/listener.log #Set the ORACLE_HOME for the Oracle Net Listener, it gets reset to # adifferent ORACLE_HOME for each entry in the oratab. export ORACLE_HOME=$ORACLE_HOME_LISTNER #Stop Oracle Net Listener if[ -f $ORACLE_HOME_LISTNER/bin/tnslsnr ] ; then echo "$0: Stoping Oracle Net Listener" >> $LOG2>&1 $ORACLE_HOME_LISTNER/bin/lsnrctl stop >> $LOG 2>&1 & else echo "Failed to auto-stop Oracle Net Listener using$ORACLE_HOME_LISTNER/bin/tnslsnr" fifi # Set this in accordance with the platformORATAB=/etc/oratabif [ ! $ORATAB ] ; then echo "$ORATAB not found" exit 1;fi # Stops an instancestopinst() { ORACLE_SID=`echo $LINE | awk -F: '{print $1}' -` if[ "$ORACLE_SID" = '*' ] ; then ORACLE_SID="" fi# Called programs use same database ID export ORACLE_SID ORACLE_HOME=`echo $LINE | awk -F: '{print $2}' -`# Called scripts use same home directory export ORACLE_HOME# Put $ORACLE_HOME/bin into PATH andexport. PATH=$ORACLE_HOME/bin:${SAVE_PATH} ; export PATH# add for bug 652997 LD_LIBRARY_PATH=${ORACLE_HOME}/lib:${SAVE_LLP} ; export LD_LIBRARY_PATH PFILE=${ORACLE_HOME}/dbs/init${ORACLE_SID}.ora # See if it is a V6 or V7 database VERSION=undef if[ -f $ORACLE_HOME/bin/sqldba ] ; then SQLDBA=sqldba VERSION=`$ORACLE_HOME/bin/sqldba command=exit | awk ' /SQL\*DBA: (Release|Version)/ {split($3, V, ".") ; print V[1]}'` case $VERSION in "6") ;; *) VERSION="internal" ;; esac else if [ -f $ORACLE_HOME/bin/svrmgrl ] ; then SQLDBA=svrmgrl VERSION="internal" else SQLDBA="sqlplus /nolog" fi fi case $VERSION in "6") sqldbacommand=shutdown ;; "internal") $SQLDBA<<EOFconnect internalshutdown immediateEOF ;; *) $SQLDBA <<EOFconnect / as sysdbashutdown immediatequitEOF ;; esac iftest $? -eq 0 ; then echo "${INST} \"${ORACLE_SID}\" shut down." else echo "${INST} \"${ORACLE_SID}\" not shut down." fi} ## Loop for every entry in oratab file andand try to shut down# that ORACLE## Following loop shuts down 'DatabaseInstance[s]' with 'Y' entry cat $ORATAB | while read LINEdo case $LINE in \#*) ;; #comment-line in oratab *) ORACLE_SID=`echo $LINE | awk -F: '{print $1}' -` if[ "$ORACLE_SID" = '*' ] ; then # NULL SID - ignore ORACLE_SID="" continue fi #Proceed only if last field is 'Y' or 'W' if[ "`echo $LINE | awk -F: '{print $NF}' -`" = "Y" ] ; then if [ `echo $ORACLE_SID | cut -b 1` != '+' ]; then INST="Database instance" ORACLE_HOME=`echo $LINE | awk -F: '{print $2}' -` LOG=$ORACLE_HOME/shutdown.log echo "Processing $INST \"$ORACLE_SID\": log file$LOG" stopinst >> $LOG 2>&1 fi fi ;; esacdone ## Following loop shuts down 'DatabaseInstance[s]' with 'W' entry#cat $ORATAB | while read LINEdo case $LINE in \#*) ;; #comment-line in oratab *) ORACLE_SID=`echo $LINE | awk -F: '{print $1}' -` if[ "$ORACLE_SID" = '*' ] ; then # NULL SID - ignore ORACLE_SID="" continue fi #Proceed only if last field is 'Y' or 'W' if[ "`echo $LINE | awk -F: '{print $NF}' -`" = "W" ] ; then if [ `echo $ORACLE_SID | cut -b 1` != '+' ]; then INST="Database instance" ORACLE_HOME=`echo $LINE | awk -F: '{print $2}' -` LOG=$ORACLE_HOME/shutdown.log echo "Processing $INST \"$ORACLE_SID\": log file$LOG" stopinst >> $LOG 2>&1 fi fi ;; esacdone ## Following loop shuts down 'ASMInstance[s]'# cat $ORATAB | while read LINEdo case$LINE in \#*) ;; #comment-line in oratab *) ORACLE_SID=`echo $LINE | awk -F: '{print $1}' -` if [ "$ORACLE_SID" = '*' ] ; then # NULL SID - ignore ORACLE_SID="" continue fi #Proceed only if last field is 'Y'. #Entries whose last field is not Y or N are not DB entry, ignore them. if [ "`echo $LINE | awk -F: '{print $NF}' -`" = "Y"] ; then if [ `echo $ORACLE_SID | cut -b 1` = '+' ]; then INST="ASM instance" ORACLE_HOME=`echo $LINE | awk -F: '{print $2}' -` LOG=$ORACLE_HOME/shutdown.log echo "Processing $INST \"$ORACLE_SID\": log file$LOG" stopinst >> $LOG 2>&1 fi fi ;; esacdonegg1:/u01/app/oracle/product/11.2.0.3/db_1/bin>
通过以上信息，我们可以看出，我们只需要修改/etc/oratab脚本就可以了，dbstart 和dbshut命令可以从/etc/oratab里获取需要的参数值。
三.DB 开机自启动示例
3.1 修改/etc/oratab的值为Y
gg1:/u01/app/oracle/product/11.2.0.3/db_1/bin>ll /etc/oratab
-rw-rw-r-- 1 oracle oinstall 722 Jan 3020:36 /etc/oratab
gg1:/u01/app/oracle/product/11.2.0.3/db_1/bin>cat /etc/oratab
#
gg1:/u01/app/oracle/product/11.2.0.3/db_1:Y
3.2 修改dbstart的ORACLE_HOME_LISTNER，使其指向$ORACLE_HOME:
# First argument is used to bring up OracleNet Listener
ORACLE_HOME_LISTNER=$ORACLE_HOME
3.3 用root用户在rc.local里添加如下内容：
[root@gg1 ~]# cat /etc/rc.local
#!/bin/sh
#
# This script will be executed *after* allthe other init scripts.
# You can put your own initialization stuffin here if you don't
# want to do the full Sys V style initstuff.
touch /var/lock/subsys/local
su - oracle -c"/u01/app/oracle/product/11.2.0.3/db_1/bin/dbstart"
su - oracle -c"/u01/app/oracle/product/11.2.0.3/db_1/bin/emctl start dbconsole"
这里注意必须用oracle 用户来启动脚本。
3.4 reboot 系统，Oracle就自动启动了。
在我们的配置中，启动的包括监听，实例和OEM。
启动日志如下：
gg1:/u01/app/oracle/product/11.2.0.3/db_1>cat startup.log
/u01/app/oracle/product/11.2.0.3/db_1/bin/dbstart:Starting up database "gg1"
Mon Jan 30 20:48:26 CST 2012
SQL*Plus: Release 11.2.0.3.0 Production onMon Jan 30 20:48:31 2012
Copyright (c) 1982, 2011, Oracle. All rights reserved.
SQL> Connected to an idle instance.
SQL> ORACLE instance started.
Total System Global Area 939495424 bytes
Fixed Size 2233960 bytes
Variable Size 675285400 bytes
Database Buffers 255852544 bytes
Redo Buffers 6123520 bytes
Database mounted.
Database opened.
SQL> Disconnected from Oracle Database11g Enterprise Edition Release 11.2.0.3.0 - 64bit Production
With the Partitioning, OLAP, Data Mining andReal Application Testing options
/u01/app/oracle/product/11.2.0.3/db_1/bin/dbstart:Database instance "gg1" warm started.
gg1:/u01/app/oracle/product/11.2.0.3/db_1>cat listener.log
/u01/app/oracle/product/11.2.0.3/db_1/bin/dbstart:Starting Oracle Net Listener
LSNRCTL for Linux: Version 11.2.0.3.0 -Production on 30-JAN-2012 21:24:37
Copyright (c) 1991, 2011, Oracle. All rights reserved.
Starting /u01/app/oracle/product/11.2.0.3/db_1/bin/tnslsnr:please wait...
TNSLSNR for Linux: Version 11.2.0.3.0 -Production
System parameter file is/u01/app/oracle/product/11.2.0.3/db_1/network/admin/listener.ora
Log messages written to/u01/app/oracle/diag/tnslsnr/gg1/listener/alert/log.xml
Listening on:(DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=gg1)(PORT=1521)))
Listening on:(DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(KEY=EXTPROC1521)))
Connecting to(DESCRIPTION=(ADDRESS=(PROTOCOL=TCP)(HOST=gg1)(PORT=1521)))
STATUS of the LISTENER
------------------------
Alias LISTENER
Version TNSLSNR for Linux: Version11.2.0.3.0 - Production
Start Date 30-JAN-2012 21:24:40
Uptime 0 days 0 hr. 0 min. 1 sec
Trace Level off
Security ON: Local OS Authentication
SNMP OFF
Listener Parameter File /u01/app/oracle/product/11.2.0.3/db_1/network/admin/listener.ora
Listener Log File /u01/app/oracle/diag/tnslsnr/gg1/listener/alert/log.xml
Listening Endpoints Summary...
(DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=gg1)(PORT=1521)))
(DESCRIPTION=(ADDRESS=(PROTOCOL=ipc)(KEY=EXTPROC1521)))
The listener supports no services
The command completed successfully
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