在RHEL5上安装OracleRAC10g的几个小错误处理

前阵子，在RHEL5或者OEL5上安装Oracle Clusterware 10.2.0.1遇到了不少问题，其中的原因主要是因为Oracle RAC 10.2.0.1发布的时候

前阵子，在RHEL5或者OEL5上安装Oracle Clusterware 10.2.0.1遇到了不少问题，其中的原因主要是因为Oracle RAC 10.2.0.1发布的时候RHEL5还没出来，，那时的RedHat才是RHEL4，在SUSE Linux SLES10上也有同样的问题。

问题出现刚开始安装的时候和最后一个节点运行root.sh的时候。其中主要的问题是三个：

Issue#1: To install 10gR2, you must first install the base release, which is 10.2.0.1. As these version of OS are newer, you should use the following command to invoke the installer:

$ runInstaller -ignoreSysPrereqs // This will bypass the OS check //

Issue#2: At end of root.sh on the last node vipca will fail to run with the following error:

Oracle CRS stack installed and running under init(1M)
Running vipca(silent) for configuring nodeapps
/home/oracle/crs/oracle/product/10/crs/jdk/jre//bin/java: error while loading
shared libraries: libpthread.so.0: cannot open shared object file:
No such file or directory

Issue#3: After working around Issue#2 above, vipca will fail to run with the following error if the VIP IP’s are in a non-routable range [10.x.x.x, 172.(16-31).x.x or 192.168.x.x]:

# vipca
Error 0(Native: listNetInterfaces:[3])
[Error 0(Native: listNetInterfaces:[3])]

原因是这样的：
These releases of the Linux kernel fix an old bug in the Linux threading that Oracle worked around using LD_ASSUME_KERNEL settings in both vipca and srvctl, this workaround is no longer valid on OEL5 or RHEL5 or SLES10 hence the failures.

对于问题一，比较容易解决，只需要runInstaller的时候忽略检查即可。
问题二的解决方法是：

To workaround Issue#2 above, edit vipca (in the CRS bin directory on all nodes) to undo the setting of LD_ASSUME_KERNEL. After the IF statement around line 120 add an unset command to ensure LD_ASSUME_KERNEL is not set as follows:

if [ "$arch" = "i686" -o "$arch" = "ia64" -o "$arch" = "x86_64" ]
then
LD_ASSUME_KERNEL=2.4.19
export LD_ASSUME_KERNEL
fi
unset LD_ASSUME_KERNEL <<<== Line to be added

问题三的解决方法：

To workaround issue#3 (vipca failing on non-routable VIP IP ranges, manually or during root.sh), if you still have the OUI window open, click OK and it will create the “oifcfg” information, then cluvfy will fail due to vipca not completed successfully, skip below in this note and run vipca manually then return to the installer and cluvfy will succeed. Otherwise you may configure the interfaces for RAC manually using the oifcfg command as root, like in the following example (from any node):

/bin # ./oifcfg setif -global eth0/192.168.1.0:public
/bin # ./oifcfg setif -global eth1/10.10.10.0:cluster_interconnect
/bin # ./oifcfg getif
eth0 192.168.1.0 global public
eth1 10.10.10.0 global cluster_interconnect

然后在手工运行vipca添加nodeapps resource即可。

详细的情况记录在Oracle notes: 414163.1。