Redhat as4 下oracle10g自启动脚本设置
原创：Ryan
关于oracle在linux系统下安装后，如何在系统重启的情况下让服务自动启动起来，网上有很多的教程和现成的脚本，这里只是个人工作中的一点经验。
以redhat as4和oracle 10g为例。单机在安装过程依照oracle官方的文档一步步下来，只要设置好参数、安装好必要的包，一般不会出什么问题。安装好了以后系统重启，oracle重启服务，网上很多人建议自己写脚本（其实脚本也很简单），这里讲的是用oracle本身的脚本实现，当然不可避免最后还要写一点点的。
1、配置dbstart和dbshut
在$ORACLE_HOME/bin中，有dbstart和dbshut这两个脚本，more dbstart看一下可以看到：
引用:
#
# $Id: dbstart.sh.pp 11-may-2005.18:18:07 vikrkuma Exp $
# Copyright (c) 1991, 2005, Oracle. All rights reserved.
#
###################################
#
# usage: dbstart
#
# This script is used to start ORACLE from /etc/rc(.local).
# It should ONLY be executed as part of the system boot procedure.
#
# This script will start all databases listed in the oratab file
# whose third field is a "Y". If the third field is set to "Y" and
# there is no ORACLE_SID for an entry (the first field is a *),
# then this script will ignore that entry.
#
# This script requires that ASM ORACLE_SID's start with a +, and
# that non-ASM instance ORACLE_SID's do not start with a +.
#
# If ASM instances are to be started with this script, it cannot
# be used inside an rc*.d directory, and should be invoked from
# rc.local only. Otherwise, the CSS service may not be available
# yet, and this script will block init from completing the boot
# cycle.
#
# Note:
# Use ORACLE_TRACE=T for tracing this script.
#
# The progress log for each instance bringup plus Error and Warning message[s]
# are logged in file $ORACLE_HOME/startup.log. The error messages related to
# instance bringup are also logged to syslog (system log module).
# The Listener log is located at $ORACLE_HOME_LISTNER/listener.log
......
