To achieve high availability when processing SAP messages on distributed systems, you can set up a shared queue for the SAP adapter event store.
On distributed systems, you can configure the integration node to use a client connection to a remote WebSphere® MQ queue manager to persist the transaction ID (TID) store for SAP transactional RFC (tRFC) data. By using this configuration, two adapters that are deployed to two integration nodes can share the same TID, and can therefore operate as a single RFC server. This configuration is essential if the adapters have been configured with the same RFC Program ID. For important information about using WebSphere MQ with IBM® App Connect Enterprise, see Installing IBM MQ.
You can use the Run WebSphere MQ Commands (runmqsc) command or WebSphere MQ Explorer to create this client channel definition file on any queue manager. After you have created the file, you must move it from the queue manager to a file system that is accessible to the integration node.
To set up a shared queue for the SAP adapter event store, complete the following steps.