Preinstallation Tasks


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This topic describes important information that you need to review before installing BEA eLink Adapter for R/3 ALE. It includes the following main sections:

Determining the Installation Node

Where you install eLink Adapter for R/3 ALE depends on the node configuration:

Single Node. If the R/3 environment is a single node configuration, then you should install BEA eLink Adapter for R/3 ALE on that node.
Multiple Nodes. If the R/3 environment is a multiple node configuration, then you should install BEA eLink Adapter for R/3 ALE on one or more of the application servers. BEA eLink Adapter for R/3 ALE must not be installed on the database server.

BEA eLink Adapter for R/3 ALE interacts with R/3 using the SAP RFC library. The RFC library uses IP sockets to communicate with the R/3 application servers. Installing BEA eLink Adapter for R/3 ALE on an R/3 application server node minimizes the risk of failure in this IP socket connection. If BEA eLink Adapter for R/3 ALE is installed on an R/3 application server node, it is recommended that no other TUXEDO applications run on that same node, in order to reduce the workload on the node.

However, BEA eLink Adapter for R/3 ALE can be installed on a node other than an R/3 application server. In this situation, the IP socket connection will transparently extend across the network to the R/3 application server.

eLink Platform (TUXEDO) Requirements

BEA eLink Adapter for R/3 ALE requires that you properly install and configure eLink Platform:

Installation Node. eLink Platform must be installed on the node running BEA eLink Adapter for R/3 ALE. For installation instructions, see the BEA eLink Platform Installation Guide.
eLink Platform (TUXEDO) Configuration. After you install BEA eLink Adapter for R/3 ALE, you must configure the eLink Platform according to the instructions in Configuration Quick Reference. BEA eLink Adapter for R/3 ALE provides a semi-configured TUXEDO initialization file (cr3_ale.ubb), which requires only minimal configuration for the eLink environment.