Oracle Integration scales to meet the demands of the user. Oracle Integration takes advantage of its modern architecture to scale dynamically based upon the current load. You define the number of messages to which to subscribe.

For details about how concurrent request scalability is calculated, see Message Pack Usage and Synchronous Requests.

Oracle Integration uses the message subscription value to bill the usage of the service instance and to pre-reserve a minimum level of resources to ensure prompt response times. If your usage increases, additional resources are dynamically added by Oracle Integration's horizontal scaling rules. You do not need to take any action other than ensuring that your message level subscription is in line with your expected usage.