有时候在很多工作环境中，如果彼此几个机器的配置相似，我们就可以不用一遍又一遍的安装数据库软件了，我们可以为了更快的完成安装工作，在静默安装，图形安装的选择之外，还有克隆安装。不过在oracle 10g,11g的版本中还是存在一定的差别。虽然方法有差别，但是思路都是一致的。
我们可以从源环境中直接把oracle_home给打个包，在目标环境解压即可。这个时候尽管你去尝试sqlplus,exp这些工具也能用，但是还是存在很大的风险，毕竟别把它当成绿色版的。出了问题谁都兜不住。
11g的环境中，，可以使用下面的方式来安装。
到达$oracle_home/clone目录下，运行下面的脚本即可。输入的参数为oracle_home,还有oracle_home的名字，这个可以自己定义。
$ perl clone.pl oracle_base=/u01/app/oracle oracle_home=/u01/app/oracle/product/11.2.0.2/db_1 oracle_home_name=oradb10g_home1
./runinstaller -clone -waitforcompletion oracle_base=/u01/app/oracle oracle_home=/u01/app/oracle/product/11.2.0.2/db_1 oracle_home_name=oradb10g_home1 -silent -noconfig -nowait
starting oracle universal installer...
checking swap space: must be greater than 500 mb. actual 16383 mb passed
preparing to launch oracle universal installer from /tmp/orainstall2015-07-24_11-19-08am. please wait ...oracle universal installer, version 11.2.0.3.0 production
copyright (c) 1999, 2011, oracle. all rights reserved.
you can find the log of this install session at:
/home/oracle/orainventory/logs/cloneactions2015-07-24_11-19-08am.log
.................................................................................................... 100% done.
installation in progress (friday, july 24, 2015 11:19:16 am cst)
............................................................................... 79% done.
install successful
linking in progress (friday, july 24, 2015 11:19:23 am cst)
link successful
setup in progress (friday, july 24, 2015 11:20:00 am cst)
setup successful
end of install phases.(friday, july 24, 2015 11:20:23 am cst)
然后根据提示使用root运行两个脚本即可。
10g的数据库软件就得换个方式，
$oracle_home/oui/bin/runinstaller -clone -silent -ignoreprereq oracle_home=$oracle_home oracle_home_name=oradb10g_home1
starting oracle universal installer...
.................................................................................................... 100% done.
installation in progress (friday, july 24, 2015 2:33:50 pm cst)
.......................................................................... 74% done.
install successful
linking in progress (friday, july 24, 2015 2:34:03 pm cst)
link successful
setup in progress (friday, july 24, 2015 2:34:03 pm cst)
setup successful
end of install phases.(friday, july 24, 2015 2:34:06 pm cst)
然后根据提示运行一个脚本。
如果拿11g的oracle_home采用10g的思路，报出的错误都让人摸不着头脑，因为oracle_base早就指定了。
$oracle_home/oui/bin/runinstaller -clone -silent -ignoreprereq oracle_home=$oracle_home oracle_home_name=oradb10g_home1
checking swap space: must be greater than 500 mb. actual 16383 mb passed
preparing to launch oracle universal installer from /tmp/orainstall2015-07-24_10-34-10am. please wait ...[oracle@smbionline ~]$ oracle universal installer, version 11.2.0.3.0 production
copyright (c) 1999, 2011, oracle. all rights reserved.
you can find the log of this install session at:
/u01/app/orainventory/logs/cloneactions2015-07-24_10-34-10am.log
values for the following variables could not be obtained from the command line or response file(s):
oracle_base
cloning cannot continue.
不过对于这种克隆方式还是需要简单验证一下，如果出现了意料之外的问题就是弄巧成拙了。
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