Oracle Enterprise Linux R4U8版本下安装RAC的准备工作之oracleasmlib
按照网络上的各类文档的介绍，，需要提前安装以下rpm包：
OEL5+11g--
Oracleasm-support-2.1.4-1.el5.x86_64.rpm
oracleasm-2.6.18-238.el5-2.0.5-1.el5.x86_64.rpm
oracleasmlib-2.0.4-1.el5.x86_64.rpm
而因为我的版本是OELR4U8+10g（貌似跟数据库版本没有太大关系，关键看oel的版本），我从网上找来以下几个包分别测试了一下：
-rw-r--r-- 1 root root 130075 Feb 18 21:31 oracleasm-2.6.18-164.el5-2.0.5-1.el5.i686.rpm
-rw-r--r-- 1 root root 124406 Nov 9 2010 oracleasm-2.6.9-89.0.0.0.1.EL-2.0.5-1.el4.src.rpm
-rw-r--r-- 1 root root 13105 Nov 2 2010 oracleasmlib-2.0.4-1.el4.i386.rpm
-rw-r--r-- 1 root root 13929 Feb 18 21:32 oracleasmlib-2.0.4-1.el5.i386.rpm
-rw-r--r-- 1 root root 14176 Feb 18 17:32 oracleasmlib-2.0.4-1.el5.x86_64.rpm
-rw-r--r-- 1 root root 82542 Nov 2 2010 oracleasm-support-2.1.3-1.el4.i386.rpm
-rw-r--r-- 1 root root 85687 Feb 18 21:31 oracleasm-support-2.1.7-1.el5.i386.rpm
其中我先安装了oracleasm-support-2.1.7-1.el5.i386.rpm，并且安装成功，随后尝试安装oracleasmlib-2.0.4-1.el5.i386.rpm报错，报与linux内核版本不匹配，需要2.6.89版本的oracleasm。
但是因为在网上只找到了oracleasm-2.6.9-89.0.0.0.1.EL-2.0.5-1.el4.src.rpm，因此需要编译一番才能安装：
rpmbuild --rebuild oracleasm-2.6.9-89.0.0.0.1.EL-2.0.5-1.el4.src.rpm
完成后cd /usr/src/RedHat/RPMS/i386/进行安装：
[root@node1 i386]# ll
total 140
-rw-r--r-- 1 root root 132238 Feb 18 21:46 oracleasm-2.6.9-89.0.0.0.1.EL-2.0.5-1.el4.i386.rpm
-rw-r--r-- 1 root root 2409 Feb 18 21:46 oracleasm-2.6.9-89.0.0.0.1.EL-debuginfo-2.0.5-1.el4.i386.rpm
[root@node1 i386]# rpm -ivh oracleasm-2.6.9-89.0.0.0.1.EL-2.0.5-1.el4.i386.rpm
成功！
最后安装oracleasmlib-2.0.4-1.el4.i386.rpm，也没问题，可以继续进行其他准备工作了，至于这几个rpm在后面的表现如何，现在无从判断咯！后面出现问题再进行解决和记录吧。
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