Single Node and Multi Node Installation Part 1 Page - 2

In a single-node installation, the RDBMS, the core AD directories and product directories, and the concurrent processing, forms, and Web servers are installed on one node under a common APPL_TOP.

In a multi-node installation, the RDBMS and the concurrent processing server, forms server, and Web server can be distributed across multiple nodes. The core AD directories and all product directories are installed under the APPL_TOP on all tiers. Nodes can be configured to share an APPL_TOP.

If you select the single node installation, then skip the steps 5, 6 and 7, and start from step 8. For multi-node installation, follow all the steps given below.

Click Next to continue.

Step 5. Use Load Balancing

On the Load Balancing screen, you can set up a configuration that will distribute the forms or concurrent processing load across multiple forms or concurrent processing servers (respectively).

In a system that employs load balancing, requests are automatically directed to a server on the "least loaded" node — the one that has the smallest number of processing tasks in progress. On this screen, you choose whether to enable load balancing. If you choose the "No, do not enable load balancing" option, the wizard assumes that your system will not be configured for multiple forms or concurrent processing servers.

If you choose the "Yes, enable load balancing" option, the wizard prompts you to indicate the number of forms servers and concurrent processing servers, and then steps you through the task of assigning those servers to the nodes in your system.

Step 6. Assign servers to nodes and indicate operating system

The Node Information screen lists the servers to be installed and prompts you to provide a name for each node and indicate the operating system.

You assign servers to individual nodes using the Node Name field. Type the name of the node where each service will be installed, repeating the same name for all services to be installed on that node. For example, in a system configured for three nodes, type DB-CM-ADMIN as the name of the node that will host the Database and the Concurrent Mgr. The AD core technologies (administration services, also known as the Administration server) are also installed (under the APPL_TOP) on the DB-CM-ADMIN node.

To install the forms server and the Web server on separate nodes, type FORMS-1 as the node name for the Forms services, and WEB-1 as the node name for the Web services. Select Linux from the drop-down list in the Operating System field.

Notice that the "Enable a shared APPL_TOP for this instance" check box at the bottom of the Node Information screen is checked. Rapid Install has set up the shared APPL_TOP configuration based on the nodes you identified on this screen.