在Linux平台上,从Oracle
11gR2开始,不论是单实例的库,还是RAC库,如果需要用到ASM时,通常都需要单独安装Grid
Infrastructure软件。而在Linux平台上以图形界面【OUI Oracle Universal
Installer】安装Oracle 11gR2
Grid软件过程中,会提示以root用户执行orainstRoot.sh和root.sh脚本【如下图一:单实例安装,图二:RAC安装】。
图二:Linux平台安装RAC时,grid软件需要执行的脚本
那么这两个脚本分别做了什么,有什么作用呢文简单记录:
一 /u01/app/oraInventory/orainstRoot.sh脚本的作用
1 添加grid用户及oinstall组对Oracle Central Inventory 目录的读写权限;
Oracle Central Inventory 目录默认情况下,位于$ORACLE_BASE的上一级目录下,如下图三:

图三:Oracle Central Inventory的路径
2 删除其它用户组对该目录的读、写、执行权限;
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11gOCM->pwd
/u01/app
11gOCM>ls
total 20
drwxrwxr-x. 3 grid oinstall
4096 Oct 28 10:38 11.2.0
drwxr-xr-x 2
grid oinstall 4096 Oct 30 10:20
acfs
drwxrwxr-x. 8 grid oinstall
4096 Oct 28 10:38 grid
drwxrwxr-x. 8 oracle oinstall 4096 Nov 5 10:57
oracle
drwxrwx—. 6 grid oinstall
4096 Oct 10 11:09 oraInventory
11gOCM->
3 创建/etc/oraInst.loc文件。
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11gOCM->
cat/etc/oraInst.loc
inventory_loc=/u01/app/oraInventory
inst_group=oinstall
11gOCM->
二 /u01/app/11.2.0/grid/root.sh脚本的作用
1 cp
grid用户的$ORACLE_HOME/bin下的oraenv、dbhome、coraenv可执行程序到/usr/local/bin路径下;
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11gOCM->pwd
/u01/app/11.2.0/grid/bin
11gOCM-> ll oraenv dbhome coraenv
-rwxr-xr-x. 1 grid oinstall 5778 Jan 1 2000 coraenv
-rwxr-xr-x. 1 grid oinstall 2415 Jan 1 2000 dbhome
-rwxr-xr-x. 1 grid oinstall 6183 Jan 1 2000 oraenv
11gOCM-> ll/usr/local/bin/
total 232
-rwxr-xr-x. 1 grid root 5778
Oct 10 10:54 coraenv
-rwxr-xr-x. 1 grid root 2415
Oct 10 10:54 dbhome
-rwxr-xr-x. 1 grid root 6183
Oct 10 10:54 oraenv
-rwxr-xr-x 1 root root 214001 Oct 10 16:39
rlwrap
11gOCM->
2 创建/etc/oratab文件;
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11gOCM->cat/etc/oratab
#Backup file is /u01/app/11.2.0/grid/srvm/admin/oratab.bak.11gocm line added by
Agent
#
# This file is used by ORACLE utilities. It is
created by root.sh
# and updated by either Database Configuration Assistant while
creating
# a database or ASM Configuration Assistant while creating ASM
instance.
# 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::
#
# 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.
#
#
+ASM:/u01/app/11.2.0/grid:N
orcl:/u01/app/oracle/product/11.2.0/db_1:N #
line added by Agent
11gOCM->
3 创建grid用户的OCR keys文件;
4
启动ohasd守护进程,并且将ohasd守护进程的启动文件写入到/etc/inittab文件中,以便于ohasd守护进程随着操作系统的启动而启动。如果是Oracle
Enterprise Linux
6及以上版本的操作系统的话,则将该配置信息写入到/etc/init/oracle-ohasd.conf的独立配置文件中。
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11gOCM->cat/etc/init/oracle-ohasd.conf
# Copyright (c) 2001, 2011, Oracle and/or its affiliates. All
rights reserved.
#
# Oracle OHASD startup
start on runlevel [35]
stop on runlevel [!35]
respawn
exec/etc/init.d/init.ohasd run >/dev/null2>&1
这是Oracle Enterprise Linux
6及以上版本的操作系统上的变化,在以前版本的操作系统下,由/etc/inittab文件来控制的条目均转移到/etc/init下单个文件来控制。
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