ibm mq - Logging MQ Messages -

i want log messages come mq queue database/file or logging queue , can not modify existing code. there methods implement kind of message logging utility act http sniffer? or maybe mq have built-in finctionality log messages?

thanks in advance ansers.

i think possible creating alias queue points topic.

assuming recv.q queue application receives messages , processes.

1) first create topic, log.to.database.
2) create alias queue alias.log.to.database base object set log.to.database , set base type topic.
3) create local queue log.to.database.q
4) create durable subscription, sub.for.recv.q points recv.q destination.
5) create durable subscription sub.for.log.to.dabase points log.to.database.q destination

now sender application need put messages alias.log.to.database. since alias queue points topic, messages gets published onto log.to.database. topic have 2 subscriptions registered, both same message. consumer application continue work whereas new application can written process messages other subscription.