Message Contents

A broker can place an entire message on the dead message queue, or it can discard the message body contents, retaining just the header and property data. By default, the dead message queue stores entire messages.

If you want to reduce the size of the dead message queue and if you do not plan to restore dead messages, consider setting the imq.destination.DMQ.truncateBody broker property to true:

imqcmd update bkr -o imq.destination.DMQ.truncateBody=true

This will discard the message body and retain only the headers and property data.