During an install of Oracle 12cR1 RAC Grid Infrastructure on Red Hat or CentOS 6.2, 6.3 or 6.4, you run the runcluvfy.sh script to test node readiness and it fails with the following error:
ERROR: Reference data is not available for verifying prerequisites on this operating system distribution Verification cannot proceed
This is due to bug 15973656 which states that runcluvfy.sh cannot properly detect the Red Hat 6.2 and above operating system. The problem also affects CentOS 6.2 and above.
When installing Oracle 12c RAC, the Grid Installer fails with:
Specified network interface doesn't maintain connectivity across cluster nodes.
This error is caused when the Linux firewall is still operational.
Log in as root, shutdown and disable the firewall on all nodes of the cluster:
[root@ora12a ~]# service iptables stop iptables: Flushing firewall rules: [ OK ] iptables: Setting chains to policy ACCEPT: filter [ OK ] iptables: Unloading modules: [ OK ] [root@ora12a ~]# chkconfig iptables off
Now retry the Grid installer step and it should succeed.
Last week I was in Dallas, Texas meeting with some customers and reminding myself what sunny weather looks like.
I took the opportunity to hook up with my friend and colleague Lester Wells, an awesome EMC guy based out of Dallas, and who is also an expert in all things Oracle.
Sitting in the Champps bar near to DFW, we decided, as geeks are often want to do, to see if the 11gR2 RAC on VMware Workstation 8, the process for which is shown in this blog, would also work under Lester’s VMware Workstation 9.
Two guys, two laptops, a table close to wall sockets and more than just a few beers later, happily it turns out that everything worked exactly the same under Workstation 9, as it did under Workstation 8.
If you’re running under Workstation 8 you can go ahead and upgrade, it won’t break anything.
If you are wishing to create a RAC under your Workstation 9, the ten part process will work just the same.
During the install of Oracle 11gR2 RAC Grid, the installer hangs at 65%, with no errors on screen or in the log file.
The problem is the Linux firewall interfering with the install.
Before running the runInstaller script, make sure the firewall is disabled on ALL nodes. Connect as root and disable it as follows:
[root@tbird1 ~]# service iptables stop Flushing firewall rules: [ OK ] Setting chains to policy ACCEPT: filter [ OK ] Unloading iptables modules: [ OK ]
To make sure it stays permanently disabled use the following:
[root@tbird1 init.d]# chkconfig iptables off
the gruffdba 