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Configuring Message Server CommunicationLocate this document in the navigation structure

Context

Message server communication is established through the message server that is used as a dispatcher when sending messages. The advantage of this way of communication is that it provides a failover function, which avoids the loss of information.

Use this procedure to configure the default settings of the message server communication.

Recommendation

We recommend that you do not modify the default message server communication settings unless you are advised to do so by SAP Support.

Procedure


  1. Start the Config Tool by double-clicking the configtool script file from <SAP_install_dir>/<system_name>/<instance_name>/j2ee/configtool directory.

  2. Choose Start of the navigation path View  Next navigation step Expert Mode End of the navigation path.

  3. Choose Start of the navigation path cluster-data Next navigation step template  Next navigation step instance - <n>  Next navigation step managers  Next navigation step ClusterManager End of the navigation path.

  4. From the list of properties, select the property you want to modify:

    • ms.message.pool.size to define the size of the message library pool.

      The size of this pool can be changed for optimization purposes.

    • ms.confirmation.timeout to specify the timeout period that a joining cluster node waits for the confirmation replies from the cluster participants.

      Recommendation

      Modify the value of this property if you receive an error message during cluster startup indicating that there are errors when getting a confirmation message due to nonresponding cluster elements and the node is rebooted.

    • ms.keepalive to increase the time the system waits before triggering a liveliness check (ping/pong protocol) event if there has been no communication between a cluster node and the message server.

    • ms.reconnect.timeout to increase the time period during which you can reconnect to the message server. After this time elapses, you are no longer able to reconnect to the message server.

  5. In the Custom value field, set the required value.

  6. To apply the new value, choose Set Custom Value .

  7. To save the changes, choose Apply changes.

  8. For the changes to take effect, restart the cluster.