Oracle Database Tips by Donald Burleson

Oracle10g Grid Computing with RAC
Chapter 6 - Install, Configure and Database Creation

CRS Installation

Figure 6.6 Inventory Selection Page

3. Next you would be presented with 'Specify Location Page' (as shown in Fig. 6.7) Ensure that the source points to the software location, which is either the software CD directory or the location of the directory where the software is copied. Also specify the CRS Home Name and its location. Cluster Ready Services should be installed in a separate Oracle Home, which is different from the RAC Database Oracle Home. The CRS home directory is the directory where you choose to install the software for Oracle Cluster Ready Services.
   
   Figure 6.7 CRS Home Location

4. In the next step, you will make the language selection. After that you will be asked to provide a Cluster Name and also the private and public host names for the nodes in the cluster. In our example, Cluster Name is specified as PROD and public node names are shown as node1, node2 and node3. Private host names are shown as rac1-2, rac2-2 and rac3-2. Oracle uses the private Network for Cache Fusion block transfers and inter-node messages. Also note that the Cluster Configuration Information page (Fig. 6.8) contains pre-defined node information if the OUI detects that your system has vendor clusterware.

Figure 6.8 Cluster Configuration Page

5. In the next page, identify the interfaces to use as private interconnect. In our example, we have provided 'eth2' as the private interconnect interface.

Figure 6.9 Private Interconnect Enforcement

6. Next, the Cluster Registry Location Information page is shown. Enter the complete path for the raw device or shared file system file for the Oracle Cluster Registry (OCR). In our example, we have entered /mnt/ps/db/ocr, which is located on a cluster file system. The OCR stores the cluster nodes information. (as in Fig. 6.10) This file should be about 100MB. In our installation, we have used the Polyserve Cluster file system and we have pre-created the OCR file as shown below.