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Grid软件安装过程中orainstRoot.sh和root.sh脚本到底做了什么?

作者: | 分类:Oracle, RAC | Tag:, | 评论:0 
字号:T|T

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】。

Linux平台安装单实例时,grid软件需要执行的脚本

图一:Linux平台安装单实例时,grid软件需要执行的脚本

Linux平台安装RAC时,grid软件需要执行的脚本

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?本文简单记录:

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:

Oracle Central Inventory

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;

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。

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;

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;

 
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:<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.
#
#
+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。

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/null 2>&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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