Effect of message length

Although WebSphere MQ for z/OS allows messages to hold up to 100 MB of data, the amount of data in a message affects the performance of the application that processes the message. To achieve the best performance from your application, send only the essential data in a message; for example, in a request to debit a bank account, the only information that might need to be passed from the client to the server application is the account number and the amount of the debit.