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.
Time Required: 60 minutes
Class Materials:
Next we are going to install the Oracle Grid Infrastructure software.
The Grid Infrastructure will provide the Cluster software that allows the RAC nodes to communicate, as well as the ASM software to manage the shared disks.
To begin, download the zip file from the Oracle software download website and unzip on Rodolfo.
Time Required: 10 minutes
Class Materials:
Next we are going to create a new RAC database using DBCA.
Open a new command window to make sure all environment settings are established. Do not re-use the same window you used to install the Grid and Database.
Time Required: 60 minutes
Class Materials:
Next we are going to install the Oracle Database 11gR2 11.2.0.3 software.
To begin, download the two zip files from the MOS and unzip on Rodolfo. Make sure you are logged into Rodolfo as the oracle user.
Time Required: 30 minutes
Class Materials:
Next we are going to add a shared disk to our two Windows VMs.
VMware Workstation makes the allocation of shared disk to VMs very simple. Shared disk has been the biggest obstacle to create Oracle RAC clusters at home, but VMware gives us a reliable and portable solution that does not require fire-wire hacks, your own NFS server or a SCSI disk array.
Time Required: 20 minutes
Class Materials:
We are now ready to clone our VM. From this point forward we will have two machines, and we will start to think of them individually.
Make sure your Windows VM is shutdown.
Time Required: 20 minutes
Class Materials:
Next we are going to add a DNS server to our Windows VM.
The DNS server is needed to support the SCAN address. If you have an existing DNS server available to you, then by all means use it, but in my case I do not, so I am going to create one on my Windows VM.
Time Required: 20 minutes
Class Materials:
Next we are going to modify the Windows security policy and account settings to support Oracle RAC.
Open a command prompt and enter the following command:
secpol
This opens the Local Security Policy interface. Alternatively you can navigate here by using:
Start->Administrative Tools->Local Security Policy
Time Required: 10 minutes
Class Materials:
Next we need to edit the Windows registry to change certain behaviours and to make sure we are ready for a RAC install.
Open a command prompt and type regedit to open the Windows registry editor.
the gruffdba 