High Availability of SAP Adapter on the Business Process Manager (BPM) platform
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Before getting into the depth of how to go about configuring the adapter to create a high availability environment on BPM, I would like to address the question of why is it even needed in the first place.
A highly available system helps in uninterrupted work resulting in higher productivity. One can look at it from a perspective of having multiple systems operating so that if one goes down the other comes up thus giving an illusion to the user as if nothing went wrong and resulting in continuation of work without any problems.
A similar technique is applied to adapters whereby an adapter is deployed on a clustered environment thus resulting in high availability systems and workload management.
Now I would briefly like to list the steps involved in creating a clustered environment for SAP adapter on BPM platform.
1. The first step involves logging into the WebSphere administration console.
2. Under the “Server” tab click on “Deployment Environment”. The Screen displays certain options. Give a name to the deployment environment that you would like to create and then click “Next”.
3. On the next screen one is asked to “Select Nodes” that go into making of a cluster. Here one can have multiple nodes and on various systems. The idea is that these systems will form a cluster like setup resulting in a system whereby if one of them goes down or encounters any problems the other will continue the work without any interruptions.
4. Subsequent steps talk about the Database setup for the cluster. The Process Server data source and Process Server Messaging engine data source are to be provided (These databases have to be created prior to the cluster environment configuration of individual nodes of the cluster)
5. Next step requires one to enter the database username and password for all the cluster nodes.
6. This finalizes the steps one has to take for the configuration on admin console. Click on “Finish and Generate Environment”.
Testing this setup: