We are using Websphere 5.1 as the application server for our application development. For asynchronous processing we are using Message Driven Beans (MDB). As part of configuring the message listener for MDB we have to set the "Maxmimum Sessions" parameter setting. Is there any constraint on the maximum value that we can set for this parameter.<br>Also can someone refer me a document that gives the details about the MDB architecture & MDB life cycle ( How MDB is linked to Message Listener? etc)