Oracle Database Tips by Donald Burleson

Oracle10g Grid Computing with RAC
Chapter 15 - RAC Migration Topics

The Instance Is on a Cluster and Running from a Cluster Enabled Oracle Home

d. For UNIX/Linux-based systems:

i. Verify user equivalence to and from an existing node to the new nodes using rsh or ssh. Verify it in both directions.

e. For Windows-based systems:

i. Make sure that the following command can be executed from each of the existing nodes of your cluster where the host_name specified is the public network name of the new node:

NET USE \\host_name\C$

If the proper administrative privileges on each node are set the operating system responds with:

Command completed successfully.

After the above procedures are complete, the new nodes are connected to the cluster and configured with the required software to make them visible to the clusterware. Configure the new nodes as members of the cluster by extending the cluster software to the new nodes as described next.

Extending Clusterware and Oracle Software to New Nodes

The next sections describe how to add new nodes to the clusterware and to the Oracle database software layers, the topics covered will be:

• Adding Nodes at the Vendor Clusterware Layer in UNIX

• Adding Nodes at the Oracle Clusterware Layer in UNIX and Windows

Adding Nodes at the Vendor Clusterware Layer in UNIX/Linux

In UNIX/Linux-based systems using non-Oracle supplied clusterware, new nodes are added at the clusterware layer by using the vendor supplied clusterware documentation. When systems use shared storage for the CRS home, make sure that the existing clusterware is accessible by the new nodes. Test that the new nodes can be brought online as part of the existing cluster. In the next section we will look at adding the nodes at the clusterware layer.

All platforms require the following steps. The OUI requires access to the private interconnect which we have already verified.

1. Using one of the existing nodes, go to the <CRS home>/OUI/bin directory on UNIX/Linux-based systems or to the <CRS home>\oui\bin directory on Windows-based systems. The ADDNODE script (addNode.sh on UNIX/Linux, addNode.bat on Windows) to start the OUI.
    

2. The OUI is started in the add node mode and the OUI Welcome screen appears. Click on the Next button and then the Specify Cluster Nodes for Node Addition screen will appear.
    

3. On the Specify Cluster Nodes for Node Addition screen the upper table shows the existing nodes associated with the CRS home from which you launched the OUI, the lower table is used to enter the public and private node names of the new nodes.
    

4. When you use vendor supplied clusterware, then the public node names automatically appear in the lower table. Click Next and the OUI verifies connectivity on the existing nodes and on the new nodes. The verifications performed by the OUI include:

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